diff --git a/FreeSql/Internal/CommonProvider/AdoProvider/AdoProvider.cs b/FreeSql/Internal/CommonProvider/AdoProvider/AdoProvider.cs
index f08afce6..d5b6835d 100644
--- a/FreeSql/Internal/CommonProvider/AdoProvider/AdoProvider.cs
+++ b/FreeSql/Internal/CommonProvider/AdoProvider/AdoProvider.cs
@@ -2,11 +2,13 @@
 using SafeObjectPool;
 using System;
 using System.Collections.Generic;
+using System.Collections.Concurrent;
 using System.Data;
 using System.Data.Common;
 using System.Diagnostics;
 using System.Linq;
 using System.Text;
+using System.Reflection;
 
 namespace FreeSql.Internal.CommonProvider {
 	abstract partial class AdoProvider : IAdo {
@@ -62,15 +64,21 @@ namespace FreeSql.Internal.CommonProvider {
 			if (isThrowException) throw e;
 		}
 
+		internal static ConcurrentDictionary<Type, Dictionary<string, PropertyInfo>> dicQueryTypeGetProperties = new ConcurrentDictionary<Type, Dictionary<string, PropertyInfo>>();
 		public List<T> Query<T>(string cmdText, object parms = null) => Query<T>(CommandType.Text, cmdText, GetDbParamtersByObject(cmdText, parms));
 		public List<T> Query<T>(CommandType cmdType, string cmdText, params DbParameter[] cmdParms) {
-			var names = new Dictionary<string, int>(StringComparer.CurrentCultureIgnoreCase);
 			var ret = new List<T>();
 			var type = typeof(T);
+			int[] indexes = null;
+			var props = dicQueryTypeGetProperties.GetOrAdd(type, k => type.GetProperties().ToDictionary(a => a.Name, a => a, StringComparer.CurrentCultureIgnoreCase));
 			ExecuteReader(dr => {
-				if (names.Any() == false)
-					for (var a = 0; a < dr.FieldCount; a++) names.Add(dr.GetName(a), a);
-				ret.Add((T)Utils.ExecuteArrayRowReadClassOrTuple(type, names, dr, 0).Value);
+				if (indexes == null) {
+					var idxs = new List<int>();
+					for (var a = 0; a < dr.FieldCount; a++)
+						if (props.ContainsKey(dr.GetName(a))) idxs.Add(a);
+					indexes = idxs.ToArray();
+				}
+				ret.Add((T)Utils.ExecuteArrayRowReadClassOrTuple(type, indexes, dr, 0).Value);
 			}, cmdType, cmdText, cmdParms);
 			return ret;
 		}
diff --git a/FreeSql/Internal/CommonProvider/AdoProvider/AdoProviderAsync.cs b/FreeSql/Internal/CommonProvider/AdoProvider/AdoProviderAsync.cs
index b9c0fd3f..2af90805 100644
--- a/FreeSql/Internal/CommonProvider/AdoProvider/AdoProviderAsync.cs
+++ b/FreeSql/Internal/CommonProvider/AdoProvider/AdoProviderAsync.cs
@@ -11,13 +11,18 @@ namespace FreeSql.Internal.CommonProvider {
 	partial class AdoProvider {
 		public Task<List<T>> QueryAsync<T>(string cmdText, object parms = null) => QueryAsync<T>(CommandType.Text, cmdText, GetDbParamtersByObject(cmdText, parms));
 		async public Task<List<T>> QueryAsync<T>(CommandType cmdType, string cmdText, params DbParameter[] cmdParms) {
-			var names = new Dictionary<string, int>(StringComparer.CurrentCultureIgnoreCase);
 			var ret = new List<T>();
 			var type = typeof(T);
+			int[] indexes = null;
+			var props = dicQueryTypeGetProperties.GetOrAdd(type, k => type.GetProperties().ToDictionary(a => a.Name, a => a, StringComparer.CurrentCultureIgnoreCase));
 			await ExecuteReaderAsync(dr => {
-				if (names.Any() == false)
-					for (var a = 0; a < dr.FieldCount; a++) names.Add(dr.GetName(a), a);
-				ret.Add((T)Utils.ExecuteArrayRowReadClassOrTuple(type, names, dr, 0).Value);
+				if (indexes == null) {
+					var idxs = new List<int>();
+					for (var a = 0; a < dr.FieldCount; a++)
+						if (props.ContainsKey(dr.GetName(a))) idxs.Add(a);
+					indexes = idxs.ToArray();
+				}
+				ret.Add((T)Utils.ExecuteArrayRowReadClassOrTuple(type, indexes, dr, 0).Value);
 				return Task.CompletedTask;
 			}, cmdType, cmdText, cmdParms);
 			return ret;
diff --git a/FreeSql/Internal/CommonProvider/SelectProvider/Select0Provider.cs b/FreeSql/Internal/CommonProvider/SelectProvider/Select0Provider.cs
index 0721bde7..20895c9c 100644
--- a/FreeSql/Internal/CommonProvider/SelectProvider/Select0Provider.cs
+++ b/FreeSql/Internal/CommonProvider/SelectProvider/Select0Provider.cs
@@ -271,6 +271,7 @@ namespace FreeSql.Internal.CommonProvider {
 				var dicfield = new Dictionary<string, bool>();
 				var tb = _tables.First();
 				var index = 0;
+				var otherindex = 0;
 				var ps = _tables.First().Table.Properties;
 				foreach (var prop in ps.Values) {
 					if (tb.Table.ColumnsByCs.TryGetValue(prop.Name, out var col)) { //普通字段
@@ -289,6 +290,7 @@ namespace FreeSql.Internal.CommonProvider {
 							var quoteName = _commonUtils.QuoteSqlName(col2.Attribute.Name);
 							field.Append(_commonUtils.QuoteReadColumn(col2.CsType, $"{tb2.Alias}.{quoteName}"));
 							++index;
+							++otherindex;
 							if (dicfield.ContainsKey(quoteName)) field.Append(" as").Append(index);
 							else dicfield.Add(quoteName, true);
 						}
@@ -297,7 +299,8 @@ namespace FreeSql.Internal.CommonProvider {
 					var propGetSetMethod = prop.GetSetMethod();
 					Expression readExpAssign = null; //加速缓存
 					if (prop.PropertyType.IsArray) readExpAssign = Expression.New(Utils.RowInfo.Constructor,
-						Expression.Call(Utils.MethodGetDataReaderValue, new Expression[] { Expression.Constant(prop.PropertyType), Expression.Call(rowExp, Utils.MethodDataReaderGetValue, dataIndexExp) }),
+						Utils.GetDataReaderValueBlockExpression(prop.PropertyType, Expression.Call(rowExp, Utils.MethodDataReaderGetValue, dataIndexExp)),
+						//Expression.Call(Utils.MethodGetDataReaderValue, new Expression[] { Expression.Constant(prop.PropertyType), Expression.Call(rowExp, Utils.MethodDataReaderGetValue, dataIndexExp) }),
 						Expression.Add(dataIndexExp, Expression.Constant(1))
 					);
 					else {
@@ -305,27 +308,29 @@ namespace FreeSql.Internal.CommonProvider {
 						if (proptypeGeneric.FullName.StartsWith("System.Nullable`1[")) proptypeGeneric = proptypeGeneric.GenericTypeArguments.First();
 						if (proptypeGeneric.IsEnum ||
 							Utils.dicExecuteArrayRowReadClassOrTuple.ContainsKey(proptypeGeneric)) readExpAssign = Expression.New(Utils.RowInfo.Constructor,
-							Expression.Call(Utils.MethodGetDataReaderValue, new Expression[] { Expression.Constant(prop.PropertyType), Expression.Call(rowExp, Utils.MethodDataReaderGetValue, dataIndexExp) }),
-							Expression.Add(dataIndexExp, Expression.Constant(1))
+								Utils.GetDataReaderValueBlockExpression(prop.PropertyType, Expression.Call(rowExp, Utils.MethodDataReaderGetValue, dataIndexExp)),
+								//Expression.Call(Utils.MethodGetDataReaderValue, new Expression[] { Expression.Constant(prop.PropertyType), Expression.Call(rowExp, Utils.MethodDataReaderGetValue, dataIndexExp) }),
+								Expression.Add(dataIndexExp, Expression.Constant(1))
 						);
 						else {
-							readExpAssign = Expression.Call(Utils.MethodExecuteArrayRowReadClassOrTuple, new Expression[] { Expression.Constant(prop.PropertyType), Expression.Constant(null, typeof(Dictionary<string, int>)), rowExp, dataIndexExp });
+							readExpAssign = Expression.Call(Utils.MethodExecuteArrayRowReadClassOrTuple, new Expression[] { Expression.Constant(prop.PropertyType), Expression.Constant(null, typeof(int[])), rowExp, dataIndexExp });
 						}
 					}
 					blockExp.AddRange(new Expression[] {
-						//以下注释部分为【严格读取】，会损失一点性能
-						//Expression.IfThen(Expression.Not(Expression.And(
-						//	Expression.NotEqual(namesExp, Expression.Constant(null)),
-						//	Expression.Not(Expression.Call(namesExp, namesExp.Type.GetMethod("TryGetValue"), Expression.Constant(prop.Name), tryidxExp)))),
-						//	Expression.Block(
-								Expression.Assign(readExp, readExpAssign),
-								Expression.IfThen(Expression.GreaterThan(readExpDataIndex, dataIndexExp),
-									Expression.Assign(dataIndexExp, readExpDataIndex)),
-								Expression.IfThenElse(Expression.Equal(readExpValue, Expression.Constant(null)),
-									Expression.Call(retExp, propGetSetMethod, Expression.Default(prop.PropertyType)),
-									Expression.Call(retExp, propGetSetMethod, Expression.Convert(readExpValue, prop.PropertyType)))
-						//	)
-						//)
+						Expression.Assign(readExp, readExpAssign),
+						Expression.IfThen(Expression.GreaterThan(readExpDataIndex, dataIndexExp),
+							Expression.Assign(dataIndexExp, readExpDataIndex)),
+						Expression.IfThenElse(Expression.Equal(readExpValue, Expression.Constant(null)),
+							Expression.Call(retExp, propGetSetMethod, Expression.Default(prop.PropertyType)),
+							Expression.Call(retExp, propGetSetMethod, Expression.Convert(readExpValue, prop.PropertyType)))
+					});
+				}
+				if (otherindex == 0) { //不读导航属性，优化单表读取性能
+					blockExp.Clear();
+					blockExp.AddRange(new Expression[] {
+						Expression.Assign(dataIndexExp, Expression.Constant(0)),
+						Expression.Assign(readExp, Expression.Call(Utils.MethodExecuteArrayRowReadClassOrTuple, new Expression[] { Expression.Constant(type), Expression.Constant(null, typeof(int[])), rowExp, dataIndexExp })),
+						Expression.Assign(retExp, Expression.Convert(readExpValue, type))
 					});
 				}
 				blockExp.AddRange(new Expression[] {
diff --git a/FreeSql/Internal/UtilsExpressionTree.cs b/FreeSql/Internal/UtilsExpressionTree.cs
index b6c5c4b1..f158dc79 100644
--- a/FreeSql/Internal/UtilsExpressionTree.cs
+++ b/FreeSql/Internal/UtilsExpressionTree.cs
@@ -24,77 +24,78 @@ namespace FreeSql.Internal {
 		static ConcurrentDictionary<string, TableInfo> _cacheGetTableByEntity = new ConcurrentDictionary<string, TableInfo>();
 		internal static TableInfo GetTableByEntity(Type entity, CommonUtils common) {
 			if (entity.FullName.StartsWith("<>f__AnonymousType")) return null;
-			if (_cacheGetTableByEntity.TryGetValue($"{common.DbName}-{entity.FullName}", out var trytb)) return trytb; //区分数据库类型缓存
-			if (common.CodeFirst.GetDbInfo(entity) != null) return null;
+			return _cacheGetTableByEntity.GetOrAdd($"{common.DbName}-{entity.FullName}", key => { //区分数据库类型缓存
+				if (common.CodeFirst.GetDbInfo(entity) != null) return null;
 
-			var tbattr = entity.GetCustomAttributes(typeof(TableAttribute), false).LastOrDefault() as TableAttribute;
-			trytb = new TableInfo();
-			trytb.Type = entity;
-			trytb.Properties = entity.GetProperties().ToDictionary(a => a.Name, a => a, StringComparer.CurrentCultureIgnoreCase);
-			trytb.CsName = entity.Name;
-			trytb.DbName = (tbattr?.Name ?? entity.Name);
-			trytb.DbOldName = tbattr?.OldName;
-			if (common.CodeFirst.IsSyncStructureToLower) {
-				trytb.DbName = trytb.DbName.ToLower();
-				trytb.DbOldName = trytb.DbOldName?.ToLower();
-			}
-			trytb.SelectFilter = tbattr?.SelectFilter;
-			foreach (var p in trytb.Properties.Values) {
-				var tp = common.CodeFirst.GetDbInfo(p.PropertyType);
-				//if (tp == null) continue;
-				var colattr = p.GetCustomAttributes(typeof(ColumnAttribute), false).LastOrDefault() as ColumnAttribute;
-				if (tp == null && colattr == null) continue;
-				if (colattr == null)
-					colattr = new ColumnAttribute {
-						Name = p.Name,
-						DbType = tp.Value.dbtypeFull,
-						IsIdentity = false,
-						IsNullable = tp.Value.isnullable ?? true,
-						IsPrimary = false,
+				var tbattr = entity.GetCustomAttributes(typeof(TableAttribute), false).LastOrDefault() as TableAttribute;
+				var trytb = new TableInfo();
+				trytb.Type = entity;
+				trytb.Properties = entity.GetProperties().ToDictionary(a => a.Name, a => a, StringComparer.CurrentCultureIgnoreCase);
+				trytb.CsName = entity.Name;
+				trytb.DbName = (tbattr?.Name ?? entity.Name);
+				trytb.DbOldName = tbattr?.OldName;
+				if (common.CodeFirst.IsSyncStructureToLower) {
+					trytb.DbName = trytb.DbName.ToLower();
+					trytb.DbOldName = trytb.DbOldName?.ToLower();
+				}
+				trytb.SelectFilter = tbattr?.SelectFilter;
+				foreach (var p in trytb.Properties.Values) {
+					var tp = common.CodeFirst.GetDbInfo(p.PropertyType);
+					//if (tp == null) continue;
+					var colattr = p.GetCustomAttributes(typeof(ColumnAttribute), false).LastOrDefault() as ColumnAttribute;
+					if (tp == null && colattr == null) continue;
+					if (colattr == null)
+						colattr = new ColumnAttribute {
+							Name = p.Name,
+							DbType = tp.Value.dbtypeFull,
+							IsIdentity = false,
+							IsNullable = tp.Value.isnullable ?? true,
+							IsPrimary = false,
+						};
+					if (string.IsNullOrEmpty(colattr.DbType)) colattr.DbType = tp?.dbtypeFull ?? "varchar(255)";
+					colattr.DbType = colattr.DbType.ToUpper();
+
+					if (tp != null && tp.Value.isnullable == null) colattr.IsNullable = tp.Value.dbtypeFull.Contains("NOT NULL") == false;
+					if (colattr.DbType?.Contains("NOT NULL") == true) colattr.IsNullable = false;
+					if (string.IsNullOrEmpty(colattr.Name)) colattr.Name = p.Name;
+					if (common.CodeFirst.IsSyncStructureToLower) colattr.Name = colattr.Name.ToLower();
+
+					if ((colattr.IsNullable == false || colattr.IsIdentity || colattr.IsPrimary) && colattr.DbType.Contains("NOT NULL") == false) {
+						colattr.IsNullable = false;
+						colattr.DbType += " NOT NULL";
+					}
+					if (colattr.IsNullable == true && colattr.DbType.Contains("NOT NULL")) colattr.DbType = colattr.DbType.Replace("NOT NULL", "");
+					colattr.DbType = Regex.Replace(colattr.DbType, @"\([^\)]+\)", m => {
+						var tmpLt = Regex.Replace(m.Groups[0].Value, @"\s", "");
+						if (tmpLt.Contains("CHAR")) tmpLt = tmpLt.Replace("CHAR", " CHAR");
+						if (tmpLt.Contains("BYTE")) tmpLt = tmpLt.Replace("BYTE", " BYTE");
+						return tmpLt;
+					});
+					colattr.DbDefautValue = trytb.Properties[p.Name].GetValue(Activator.CreateInstance(trytb.Type));
+					if (colattr.DbDefautValue == null) colattr.DbDefautValue = tp?.defaultValue;
+					if (colattr.IsNullable == false && colattr.DbDefautValue == null) {
+						var consturctorType = p.PropertyType.GenericTypeArguments.FirstOrDefault() ?? p.PropertyType;
+						colattr.DbDefautValue = Activator.CreateInstance(consturctorType);
+					}
+
+					var col = new ColumnInfo {
+						Table = trytb,
+						CsName = p.Name,
+						CsType = p.PropertyType,
+						Attribute = colattr
 					};
-				if (string.IsNullOrEmpty(colattr.DbType)) colattr.DbType = tp?.dbtypeFull ?? "varchar(255)";
-				colattr.DbType = colattr.DbType.ToUpper();
-
-				if (tp != null && tp.Value.isnullable == null) colattr.IsNullable = tp.Value.dbtypeFull.Contains("NOT NULL") == false;
-				if (colattr.DbType?.Contains("NOT NULL") == true) colattr.IsNullable = false;
-				if (string.IsNullOrEmpty(colattr.Name)) colattr.Name = p.Name;
-				if (common.CodeFirst.IsSyncStructureToLower) colattr.Name = colattr.Name.ToLower();
-
-				if ((colattr.IsNullable == false || colattr.IsIdentity || colattr.IsPrimary) && colattr.DbType.Contains("NOT NULL") == false) {
-					colattr.IsNullable = false;
-					colattr.DbType += " NOT NULL";
+					trytb.Columns.Add(colattr.Name, col);
+					trytb.ColumnsByCs.Add(p.Name, col);
 				}
-				if (colattr.IsNullable == true && colattr.DbType.Contains("NOT NULL")) colattr.DbType = colattr.DbType.Replace("NOT NULL", "");
-				colattr.DbType = Regex.Replace(colattr.DbType, @"\([^\)]+\)", m => {
-					var tmpLt = Regex.Replace(m.Groups[0].Value, @"\s", "");
-					if (tmpLt.Contains("CHAR")) tmpLt = tmpLt.Replace("CHAR", " CHAR");
-					if (tmpLt.Contains("BYTE")) tmpLt = tmpLt.Replace("BYTE", " BYTE");
-					return tmpLt;
-				});
-				colattr.DbDefautValue = trytb.Properties[p.Name].GetValue(Activator.CreateInstance(trytb.Type));
-				if (colattr.DbDefautValue == null) colattr.DbDefautValue = tp?.defaultValue;
-				if (colattr.IsNullable == false && colattr.DbDefautValue == null) {
-					var consturctorType = p.PropertyType.GenericTypeArguments.FirstOrDefault() ?? p.PropertyType;
-					colattr.DbDefautValue = Activator.CreateInstance(consturctorType);
+				trytb.Primarys = trytb.Columns.Values.Where(a => a.Attribute.IsPrimary).ToArray();
+				if (trytb.Primarys.Any() == false) {
+					trytb.Primarys = trytb.Columns.Values.Where(a => a.Attribute.IsIdentity).ToArray();
+					foreach (var col in trytb.Primarys)
+						col.Attribute.IsPrimary = true;
 				}
-
-				var col = new ColumnInfo {
-					Table = trytb,
-					CsName = p.Name,
-					CsType = p.PropertyType,
-					Attribute = colattr
-				};
-				trytb.Columns.Add(colattr.Name, col);
-				trytb.ColumnsByCs.Add(p.Name, col);
-			}
-			trytb.Primarys = trytb.Columns.Values.Where(a => a.Attribute.IsPrimary).ToArray();
-			if (trytb.Primarys.Any() == false) {
-				trytb.Primarys = trytb.Columns.Values.Where(a => a.Attribute.IsIdentity).ToArray();
-				foreach(var col in trytb.Primarys)
-					col.Attribute.IsPrimary = true;
-			}
-			_cacheGetTableByEntity.TryAdd(entity.FullName, trytb);
-			return trytb;
+				_cacheGetTableByEntity.TryAdd(entity.FullName, trytb);
+				return trytb;
+			});
 		}
 
 		internal static T[] GetDbParamtersByObject<T>(string sql, object obj, string paramPrefix, Func<string, Type, object, T> constructorParamter) {
@@ -166,7 +167,7 @@ namespace FreeSql.Internal {
 			[typeof(JObject)] = true,
 			[typeof(JArray)] = true,
 		};
-		static ConcurrentDictionary<Type, Func<Type, Dictionary<string, int>, DbDataReader, int, RowInfo>> _dicExecuteArrayRowReadClassOrTuple = new ConcurrentDictionary<Type, Func<Type, Dictionary<string, int>, DbDataReader, int, RowInfo>>();
+		internal static ConcurrentDictionary<Type, Func<Type, int[], DbDataReader, int, RowInfo>> _dicExecuteArrayRowReadClassOrTuple = new ConcurrentDictionary<Type, Func<Type, int[], DbDataReader, int, RowInfo>>();
 		internal class RowInfo {
 			public object Value { get; set; }
 			public int DataIndex { get; set; }
@@ -179,29 +180,31 @@ namespace FreeSql.Internal {
 			public static PropertyInfo PropertyDataIndex = typeof(RowInfo).GetProperty("DataIndex");
 		}
 		internal static MethodInfo MethodDataReaderGetValue = typeof(DbDataReader).GetMethod("GetValue");
-		internal static RowInfo ExecuteArrayRowReadClassOrTuple(Type type, Dictionary<string, int> names, DbDataReader row, int dataIndex = 0) {
+		internal static RowInfo ExecuteArrayRowReadClassOrTuple(Type type, int[] indexes, DbDataReader row, int dataIndex = 0) {
 			var func = _dicExecuteArrayRowReadClassOrTuple.GetOrAdd(type, s => {
 				var returnTarget = Expression.Label(typeof(RowInfo));
 				var typeExp = Expression.Parameter(typeof(Type), "type");
-				var namesExp = Expression.Parameter(typeof(Dictionary<string, int>), "names");
+				var indexesExp = Expression.Parameter(typeof(int[]), "indexes");
 				var rowExp = Expression.Parameter(typeof(DbDataReader), "row");
 				var dataIndexExp = Expression.Parameter(typeof(int), "dataIndex");
 
-				if (type.IsArray) return Expression.Lambda<Func<Type, Dictionary<string, int>, DbDataReader, int, RowInfo>>(
+				if (type.IsArray) return Expression.Lambda<Func<Type, int[], DbDataReader, int, RowInfo>>(
 					Expression.New(RowInfo.Constructor,
-						Expression.Call(MethodGetDataReaderValue, new Expression[] { typeExp, Expression.Call(rowExp, MethodDataReaderGetValue, dataIndexExp)  /*Expression.ArrayAccess(rowExp, dataIndexExp)*/ }), 
+						GetDataReaderValueBlockExpression(type, Expression.Call(rowExp, MethodDataReaderGetValue, dataIndexExp)),
+						//Expression.Call(MethodGetDataReaderValue, new Expression[] { typeExp, Expression.Call(rowExp, MethodDataReaderGetValue, dataIndexExp) }),
 						Expression.Add(dataIndexExp, Expression.Constant(1))
-					), new[] { typeExp, namesExp, rowExp, dataIndexExp }).Compile();
+					), new[] { typeExp, indexesExp, rowExp, dataIndexExp }).Compile();
 
 				var typeGeneric = type;
 				if (typeGeneric.FullName.StartsWith("System.Nullable`1[")) typeGeneric = type.GenericTypeArguments.First();
 				if (typeGeneric.IsEnum ||
 					dicExecuteArrayRowReadClassOrTuple.ContainsKey(typeGeneric))
-					return Expression.Lambda<Func<Type, Dictionary<string, int>, DbDataReader, int, RowInfo>>(
+					return Expression.Lambda<Func<Type, int[], DbDataReader, int, RowInfo>>(
 					Expression.New(RowInfo.Constructor,
-						Expression.Call(MethodGetDataReaderValue, new Expression[] { typeExp, Expression.Call(rowExp, MethodDataReaderGetValue, dataIndexExp)  /*Expression.ArrayAccess(rowExp, dataIndexExp)*/ }),
+						GetDataReaderValueBlockExpression(type, Expression.Call(rowExp, MethodDataReaderGetValue, dataIndexExp)),
+						//Expression.Call(MethodGetDataReaderValue, new Expression[] { typeExp, Expression.Call(rowExp, MethodDataReaderGetValue, dataIndexExp) }),
 						Expression.Add(dataIndexExp, Expression.Constant(1))
-					), new[] { typeExp, namesExp, rowExp, dataIndexExp }).Compile();
+					), new[] { typeExp, indexesExp, rowExp, dataIndexExp }).Compile();
 
 				if (type.Namespace == "System" && (type.FullName == "System.String" || type.IsValueType)) { //值类型，或者元组
 					bool isTuple = type.Name.StartsWith("ValueTuple`");
@@ -216,7 +219,8 @@ namespace FreeSql.Internal {
 						foreach (var field in fields) {
 							Expression read2ExpAssign = null; //加速缓存
 							if (field.FieldType.IsArray) read2ExpAssign = Expression.New(RowInfo.Constructor,
-								Expression.Call(MethodGetDataReaderValue, new Expression[] { Expression.Constant(field.FieldType), Expression.Call(rowExp, MethodDataReaderGetValue, dataIndexExp)  /*Expression.ArrayAccess(rowExp, dataIndexExp)*/ }),
+								GetDataReaderValueBlockExpression(field.FieldType, Expression.Call(rowExp, MethodDataReaderGetValue, dataIndexExp)),
+								//Expression.Call(MethodGetDataReaderValue, new Expression[] { Expression.Constant(field.FieldType), Expression.Call(rowExp, MethodDataReaderGetValue, dataIndexExp) }),
 								Expression.Add(dataIndexExp, Expression.Constant(1))
 							);
 							else {
@@ -224,18 +228,19 @@ namespace FreeSql.Internal {
 								if (fieldtypeGeneric.FullName.StartsWith("System.Nullable`1[")) fieldtypeGeneric = fieldtypeGeneric.GenericTypeArguments.First();
 								if (fieldtypeGeneric.IsEnum ||
 									dicExecuteArrayRowReadClassOrTuple.ContainsKey(fieldtypeGeneric)) read2ExpAssign = Expression.New(RowInfo.Constructor,
-									Expression.Call(MethodGetDataReaderValue, new Expression[] { Expression.Constant(field.FieldType), Expression.Call(rowExp, MethodDataReaderGetValue, dataIndexExp)  /*Expression.ArrayAccess(rowExp, dataIndexExp)*/ }),
-									Expression.Add(dataIndexExp, Expression.Constant(1))
+										GetDataReaderValueBlockExpression(field.FieldType, Expression.Call(rowExp, MethodDataReaderGetValue, dataIndexExp)),
+										//Expression.Call(MethodGetDataReaderValue, new Expression[] { Expression.Constant(field.FieldType), Expression.Call(rowExp, MethodDataReaderGetValue, dataIndexExp) }),
+										Expression.Add(dataIndexExp, Expression.Constant(1))
 								);
 								else {
-									read2ExpAssign = Expression.Call(MethodExecuteArrayRowReadClassOrTuple, new Expression[] { Expression.Constant(field.FieldType), namesExp, rowExp, dataIndexExp });
+									read2ExpAssign = Expression.Call(MethodExecuteArrayRowReadClassOrTuple, new Expression[] { Expression.Constant(field.FieldType), indexesExp, rowExp, dataIndexExp });
 								}
 							}
 							block2Exp.AddRange(new Expression[] {
 								//Expression.TryCatch(Expression.Block(
 								//	typeof(void),
 									Expression.Assign(read2Exp, read2ExpAssign),
-									Expression.IfThen(Expression.GreaterThan(read2ExpDataIndex, dataIndexExp), 
+									Expression.IfThen(Expression.GreaterThan(read2ExpDataIndex, dataIndexExp),
 										Expression.Assign(dataIndexExp, read2ExpDataIndex)),
 									Expression.IfThenElse(Expression.Equal(read2ExpValue, Expression.Constant(null)),
 										Expression.Assign(Expression.MakeMemberAccess(ret2Exp, field), Expression.Default(field.FieldType)),
@@ -255,31 +260,33 @@ namespace FreeSql.Internal {
 							Expression.Return(returnTarget, Expression.New(RowInfo.Constructor, Expression.Convert(ret2Exp, typeof(object)), dataIndexExp)),
 							Expression.Label(returnTarget, Expression.Default(typeof(RowInfo)))
 						});
-						return Expression.Lambda<Func<Type, Dictionary<string, int>, DbDataReader, int, RowInfo>>(
-							Expression.Block(new[] { ret2Exp, read2Exp }, block2Exp), new[] { typeExp, namesExp, rowExp, dataIndexExp }).Compile();
+						return Expression.Lambda<Func<Type, int[], DbDataReader, int, RowInfo>>(
+							Expression.Block(new[] { ret2Exp, read2Exp }, block2Exp), new[] { typeExp, indexesExp, rowExp, dataIndexExp }).Compile();
 					}
 					var rowLenExp = Expression.ArrayLength(rowExp);
-					return Expression.Lambda<Func<Type, Dictionary<string, int>, DbDataReader, int, RowInfo>>(
+					return Expression.Lambda<Func<Type, int[], DbDataReader, int, RowInfo>>(
 						Expression.Block(
 							Expression.IfThen(
 								Expression.LessThan(dataIndexExp, rowLenExp),
-									Expression.Return(returnTarget, Expression.New(RowInfo.Constructor, 
-										Expression.Call(MethodGetDataReaderValue, new Expression[] { typeExp, Expression.Call(rowExp, MethodDataReaderGetValue, dataIndexExp)  /*Expression.ArrayAccess(rowExp, dataIndexExp)*/ }), 
+									Expression.Return(returnTarget, Expression.New(RowInfo.Constructor,
+										GetDataReaderValueBlockExpression(type, Expression.Call(rowExp, MethodDataReaderGetValue, dataIndexExp)),
+										//Expression.Call(MethodGetDataReaderValue, new Expression[] { typeExp, Expression.Call(rowExp, MethodDataReaderGetValue, dataIndexExp) }),
 										Expression.Add(dataIndexExp, Expression.Constant(1))))
 							),
 							Expression.Label(returnTarget, Expression.Default(typeof(RowInfo)))
-						), new[] { typeExp, namesExp, rowExp, dataIndexExp }).Compile();
+						), new[] { typeExp, indexesExp, rowExp, dataIndexExp }).Compile();
 				}
 
-				if (type == typeof(object) && names != null) {
-					Func<Type, Dictionary<string, int>, DbDataReader, int, RowInfo> dynamicFunc = (type2, names2, row2, dataindex2) => {
+				if (type == typeof(object) && indexes != null) {
+					Func<Type, int[], DbDataReader, int, RowInfo> dynamicFunc = (type2, indexes2, row2, dataindex2) => {
 						dynamic expando = new System.Dynamic.ExpandoObject(); //动态类型字段 可读可写
 						var expandodic = (IDictionary<string, object>)expando;
-						foreach (var name in names2)
-							expandodic.Add(name.Key, row2.GetValue(name.Value));
-						return new RowInfo(expando, names2.Count);
+						var fc = row2.FieldCount;
+						for (var a = 0; a < fc; a++)
+							expandodic.Add(row2.GetName(a), row2.GetValue(a));
+						return new RowInfo(expando, fc);
 					};
-					return dynamicFunc;// Expression.Lambda<Func<Type, Dictionary<string, int>, DbDataReader, int, RowInfo>>(null);
+					return dynamicFunc;// Expression.Lambda<Func<Type, int[], DbDataReader, int, RowInfo>>(null);
 				}
 
 				//类注入属性
@@ -290,14 +297,16 @@ namespace FreeSql.Internal {
 				var readExpValueParms = new List<ParameterExpression>();
 				var readExpsIndex = Expression.Variable(typeof(int), "readsIndex");
 				var tryidxExp = Expression.Variable(typeof(int), "tryidx");
+				var indexesLengthExp = Expression.Parameter(typeof(int), "indexesLength");
 				var blockExp = new List<Expression>();
 				var ctor = type.GetConstructor(new Type[0]) ?? type.GetConstructors().First();
 				var ctorParms = ctor.GetParameters();
 				if (ctorParms.Length > 0) {
-					foreach(var ctorParm in ctorParms) {
+					foreach (var ctorParm in ctorParms) {
 						Expression readExpAssign = null; //加速缓存
 						if (ctorParm.ParameterType.IsArray) readExpAssign = Expression.New(RowInfo.Constructor,
-							Expression.Call(MethodGetDataReaderValue, new Expression[] { Expression.Constant(ctorParm.ParameterType), Expression.Call(rowExp, MethodDataReaderGetValue, dataIndexExp) }),
+							GetDataReaderValueBlockExpression(ctorParm.ParameterType, Expression.Call(rowExp, MethodDataReaderGetValue, dataIndexExp)),
+							//Expression.Call(MethodGetDataReaderValue, new Expression[] { Expression.Constant(ctorParm.ParameterType), Expression.Call(rowExp, MethodDataReaderGetValue, dataIndexExp) }),
 							Expression.Add(dataIndexExp, Expression.Constant(1))
 						);
 						else {
@@ -305,12 +314,13 @@ namespace FreeSql.Internal {
 							if (proptypeGeneric.FullName.StartsWith("System.Nullable`1[")) proptypeGeneric = proptypeGeneric.GenericTypeArguments.First();
 							if (proptypeGeneric.IsEnum ||
 								dicExecuteArrayRowReadClassOrTuple.ContainsKey(proptypeGeneric)) readExpAssign = Expression.New(RowInfo.Constructor,
-								Expression.Call(MethodGetDataReaderValue, new Expression[] { Expression.Constant(ctorParm.ParameterType), Expression.Call(rowExp, MethodDataReaderGetValue, dataIndexExp) }),
-								Expression.Add(dataIndexExp, Expression.Constant(1))
+									GetDataReaderValueBlockExpression(ctorParm.ParameterType, Expression.Call(rowExp, MethodDataReaderGetValue, dataIndexExp)),
+									//Expression.Call(MethodGetDataReaderValue, new Expression[] { Expression.Constant(ctorParm.ParameterType), Expression.Call(rowExp, MethodDataReaderGetValue, dataIndexExp) }),
+									Expression.Add(dataIndexExp, Expression.Constant(1))
 							);
 							else {
 								readExpAssign = Expression.New(RowInfo.Constructor,
-									Expression.MakeMemberAccess(Expression.Call(MethodExecuteArrayRowReadClassOrTuple, new Expression[] { Expression.Constant(ctorParm.ParameterType), namesExp, rowExp, dataIndexExp }), RowInfo.PropertyValue),
+									Expression.MakeMemberAccess(Expression.Call(MethodExecuteArrayRowReadClassOrTuple, new Expression[] { Expression.Constant(ctorParm.ParameterType), indexesExp, rowExp, dataIndexExp }), RowInfo.PropertyValue),
 									Expression.Add(dataIndexExp, Expression.Constant(1)));
 							}
 						}
@@ -318,73 +328,74 @@ namespace FreeSql.Internal {
 						readExpValueParms.Add(varctorParm);
 						blockExp.AddRange(new Expression[] {
 							Expression.Assign(tryidxExp, dataIndexExp),
-							//以下注释部分为【严格读取】，会损失一点性能
-							//Expression.IfThen(Expression.Not(Expression.And(
-							//	Expression.NotEqual(namesExp, Expression.Constant(null)),
-							//	Expression.Not(Expression.Call(namesExp, namesExp.Type.GetMethod("TryGetValue"), Expression.Constant(prop.Name), tryidxExp)))),
-							//	Expression.Block(
-									Expression.Assign(readExp, readExpAssign),
-									Expression.IfThen(Expression.GreaterThan(readExpDataIndex, dataIndexExp),
-										Expression.Assign(dataIndexExp, readExpDataIndex)),
-									Expression.IfThenElse(Expression.Equal(readExpValue, Expression.Constant(null)),
-										Expression.Assign(varctorParm, Expression.Default(ctorParm.ParameterType)),
-										Expression.Assign(varctorParm, Expression.Convert(readExpValue, ctorParm.ParameterType)))
-							//	)
-							//)
+							Expression.Assign(readExp, readExpAssign),
+							Expression.IfThen(Expression.GreaterThan(readExpDataIndex, dataIndexExp),
+								Expression.Assign(dataIndexExp, readExpDataIndex)),
+							Expression.IfThenElse(Expression.Equal(readExpValue, Expression.Constant(null)),
+								Expression.Assign(varctorParm, Expression.Default(ctorParm.ParameterType)),
+								Expression.Assign(varctorParm, Expression.Convert(readExpValue, ctorParm.ParameterType)))
 						});
 					}
 					blockExp.Add(Expression.Assign(retExp, Expression.New(ctor, readExpValueParms)));
 				} else {
-					blockExp.Add(Expression.Assign(retExp, Expression.New(ctor)));
-
-					var props = type.GetProperties();
+					blockExp.AddRange(new Expression[] {
+						Expression.Assign(retExp, Expression.New(ctor)),
+						Expression.Assign(indexesLengthExp, Expression.Constant(0)),
+						Expression.IfThen(
+							Expression.NotEqual(indexesExp, Expression.Constant(null)),
+							Expression.Assign(indexesLengthExp, Expression.ArrayLength(indexesExp))
+						)
+					});
+					
+					var props = type.GetProperties();//.ToDictionary(a => a.Name, a => a, StringComparer.CurrentCultureIgnoreCase);
+					var propIndex = 0;
 					foreach (var prop in props) {
 						var propGetSetMethod = prop.GetSetMethod();
 						Expression readExpAssign = null; //加速缓存
 						if (prop.PropertyType.IsArray) readExpAssign = Expression.New(RowInfo.Constructor,
-							Expression.Call(MethodGetDataReaderValue, new Expression[] { Expression.Constant(prop.PropertyType), Expression.Call(rowExp, MethodDataReaderGetValue, dataIndexExp)  /*Expression.ArrayAccess(rowExp, dataIndexExp)*/ }),
-							Expression.Add(dataIndexExp, Expression.Constant(1))
+							GetDataReaderValueBlockExpression(prop.PropertyType, Expression.Call(rowExp, MethodDataReaderGetValue, tryidxExp)),
+							//Expression.Call(MethodGetDataReaderValue, new Expression[] { Expression.Constant(prop.PropertyType), Expression.Call(rowExp, MethodDataReaderGetValue, tryidxExp) }),
+							Expression.Add(tryidxExp, Expression.Constant(1))
 						);
 						else {
 							var proptypeGeneric = prop.PropertyType;
 							if (proptypeGeneric.FullName.StartsWith("System.Nullable`1[")) proptypeGeneric = proptypeGeneric.GenericTypeArguments.First();
 							if (proptypeGeneric.IsEnum ||
 								dicExecuteArrayRowReadClassOrTuple.ContainsKey(proptypeGeneric)) readExpAssign = Expression.New(RowInfo.Constructor,
-								Expression.Call(MethodGetDataReaderValue, new Expression[] { Expression.Constant(prop.PropertyType), Expression.Call(rowExp, MethodDataReaderGetValue, dataIndexExp)  /*Expression.ArrayAccess(rowExp, dataIndexExp)*/ }),
-								Expression.Add(dataIndexExp, Expression.Constant(1))
+									GetDataReaderValueBlockExpression(prop.PropertyType, Expression.Call(rowExp, MethodDataReaderGetValue, tryidxExp)),
+									//Expression.Call(MethodGetDataReaderValue, new Expression[] { Expression.Constant(prop.PropertyType), Expression.Call(rowExp, MethodDataReaderGetValue, tryidxExp) }),
+									Expression.Add(tryidxExp, Expression.Constant(1))
 							);
 							else {
 								continue;
-								readExpAssign = Expression.Call(MethodExecuteArrayRowReadClassOrTuple, new Expression[] { Expression.Constant(prop.PropertyType), namesExp, rowExp, tryidxExp });
+								//readExpAssign = Expression.Call(MethodExecuteArrayRowReadClassOrTuple, new Expression[] { Expression.Constant(prop.PropertyType), indexesExp, rowExp, tryidxExp });
 							}
 						}
 						blockExp.AddRange(new Expression[] {
-							Expression.Assign(tryidxExp, dataIndexExp),
-							//以下注释部分为【严格读取】，会损失一点性能
-							//Expression.IfThen(Expression.Not(Expression.And(
-							//	Expression.NotEqual(namesExp, Expression.Constant(null)),
-							//	Expression.Not(Expression.Call(namesExp, namesExp.Type.GetMethod("TryGetValue"), Expression.Constant(prop.Name), tryidxExp)))),
-							//	Expression.Block(
-									Expression.Assign(readExp, readExpAssign),
-									Expression.IfThen(Expression.GreaterThan(readExpDataIndex, dataIndexExp),
-										Expression.Assign(dataIndexExp, readExpDataIndex)),
-									Expression.IfThenElse(Expression.Equal(readExpValue, Expression.Constant(null)),
-										Expression.Call(retExp, propGetSetMethod, Expression.Default(prop.PropertyType)),
-										Expression.Call(retExp, propGetSetMethod, Expression.Convert(readExpValue, prop.PropertyType)))
-							//	)
-							//)
+							//以下注释部分为【严格读取】，会损失一点性能，使用 select * from xxx 与属性映射赋值
+							Expression.IfThenElse(
+								Expression.LessThan(Expression.Constant(propIndex), indexesLengthExp),
+								Expression.Assign(tryidxExp, Expression.ArrayAccess(indexesExp, Expression.Constant(propIndex))),
+								Expression.Assign(tryidxExp, dataIndexExp)
+							),
+							Expression.Assign(readExp, readExpAssign),
+							Expression.IfThen(Expression.GreaterThan(readExpDataIndex, dataIndexExp),
+								Expression.Assign(dataIndexExp, readExpDataIndex)),
+							Expression.IfThenElse(Expression.Equal(readExpValue, Expression.Constant(null)),
+								Expression.Call(retExp, propGetSetMethod, Expression.Default(prop.PropertyType)),
+								Expression.Call(retExp, propGetSetMethod, Expression.Convert(readExpValue, prop.PropertyType)))
 						});
+						++propIndex;
 					}
 				}
 				blockExp.AddRange(new Expression[] {
 					Expression.Return(returnTarget, Expression.New(RowInfo.Constructor, retExp, dataIndexExp)),
 					Expression.Label(returnTarget, Expression.Default(typeof(RowInfo)))
 				});
-				return Expression.Lambda<Func<Type, Dictionary<string, int>, DbDataReader, int, RowInfo>>(
-					Expression.Block(new[] { retExp, readExp, tryidxExp, readExpsIndex }.Concat(readExpValueParms), blockExp), new[] { typeExp, namesExp, rowExp, dataIndexExp }).Compile();
+				return Expression.Lambda<Func<Type, int[], DbDataReader, int, RowInfo>>(
+					Expression.Block(new[] { retExp, readExp, tryidxExp, readExpsIndex, indexesLengthExp }.Concat(readExpValueParms), blockExp), new[] { typeExp, indexesExp, rowExp, dataIndexExp }).Compile();
 			});
-
-			return func(type, names, row, dataIndex);
+			return func(type, indexes, row, dataIndex);
 		}
 
 		internal static MethodInfo MethodExecuteArrayRowReadClassOrTuple = typeof(Utils).GetMethod("ExecuteArrayRowReadClassOrTuple", BindingFlags.Static | BindingFlags.NonPublic);
@@ -412,6 +423,7 @@ namespace FreeSql.Internal {
 
 		static ConcurrentDictionary<Type, ConcurrentDictionary<Type, Func<object, object>>> _dicGetDataReaderValue = new ConcurrentDictionary<Type, ConcurrentDictionary<Type, Func<object, object>>>();
 		static MethodInfo MethodArrayGetValue = typeof(Array).GetMethod("GetValue", new[] { typeof(int) });
+		static MethodInfo MethodArrayGetLength = typeof(Array).GetMethod("GetLength", new[] { typeof(int) });
 		static MethodInfo MethodMygisGeometryParse = typeof(MygisGeometry).GetMethod("Parse", new[] { typeof(string) });
 		static MethodInfo MethodGuidParse = typeof(Guid).GetMethod("Parse", new[] { typeof(string) });
 		static MethodInfo MethodEnumParse = typeof(Enum).GetMethod("Parse", new[] { typeof(Type), typeof(string), typeof(bool) });
@@ -419,133 +431,229 @@ namespace FreeSql.Internal {
 		static MethodInfo MethodConvertChangeType = typeof(Convert).GetMethod("ChangeType", new[] { typeof(object), typeof(Type) });
 		static MethodInfo MethodTimeSpanFromSeconds = typeof(TimeSpan).GetMethod("FromSeconds");
 		static MethodInfo MethodDoubleParse = typeof(double).GetMethod("Parse", new[] { typeof(string) });
-		internal static object GetDataReaderValue(Type type, object value) {
-			if (value == null || value == DBNull.Value) return null;
-
-			var func = _dicGetDataReaderValue.GetOrAdd(type, k1 => new ConcurrentDictionary<Type, Func<object, object>>()).GetOrAdd(value.GetType(), valueType => {
-				var returnTarget = Expression.Label(typeof(object));
-				var parmExp = Expression.Parameter(typeof(object), "value");
-
-				if (type.FullName == "System.Byte[]") return Expression.Lambda<Func<object, object>>(parmExp, parmExp).Compile();
-
+		static MethodInfo MethodJTokenParse = typeof(JToken).GetMethod("Parse", new[] { typeof(string) });
+		static MethodInfo MethodJObjectParse = typeof(JObject).GetMethod("Parse", new[] { typeof(string) });
+		static MethodInfo MethodJArrayParse = typeof(JArray).GetMethod("Parse", new[] { typeof(string) });
+		internal static Expression GetDataReaderValueBlockExpression(Type type, Expression value) {
+			var returnTarget = Expression.Label(typeof(object));
+			var valueExp = Expression.Variable(typeof(object), "locvalue");
+			Func<Expression> funcGetExpression = () => {
+				if (type.FullName == "System.Byte[]") return Expression.Return(returnTarget, valueExp);
 				if (type.IsArray) {
 					var elementType = type.GetElementType();
-					if (elementType == valueType.GetElementType()) return Expression.Lambda<Func<object, object>>(parmExp, parmExp).Compile();
-
-					var ret = Expression.Variable(type, "ret");
-					var arr = Expression.Variable(valueType, "arr");
-					var arrlen = Expression.Variable(typeof(int), "arrlen");
-					var x = Expression.Variable(typeof(int), "x");
-					var readval = Expression.Variable(typeof(object), "readval");
+					var arrNewExp = Expression.Variable(type, "arrNew");
+					var arrExp = Expression.Variable(typeof(Array), "arr");
+					var arrLenExp = Expression.Variable(typeof(int), "arrLen");
+					var arrXExp = Expression.Variable(typeof(int), "arrX");
+					var arrReadValExp = Expression.Variable(typeof(object), "arrReadVal");
 					var label = Expression.Label(typeof(int));
-					return Expression.Lambda<Func<object, object>>(
+					return Expression.IfThenElse(
+						Expression.TypeEqual(valueExp, type),
+						Expression.Return(returnTarget, valueExp), 
 						Expression.Block(
-							new[] { ret, arr, arrlen, readval, x },
-							Expression.Assign(arr, Expression.TypeAs(parmExp, valueType)),
-							Expression.Assign(arrlen, Expression.ArrayLength(arr)),
-							Expression.Assign(x, Expression.Constant(0)),
-							Expression.Assign(ret, Expression.NewArrayBounds(elementType, arrlen)),
+							new[] { arrNewExp, arrExp, arrLenExp, arrXExp, arrReadValExp },
+							Expression.Assign(arrExp, Expression.TypeAs(valueExp, typeof(Array))),
+							Expression.Assign(arrLenExp, Expression.Call(arrExp, MethodArrayGetLength, Expression.Constant(0))),
+							Expression.Assign(arrXExp, Expression.Constant(0)),
+							Expression.Assign(arrNewExp, Expression.NewArrayBounds(elementType, arrLenExp)),
 							Expression.Loop(
 								Expression.IfThenElse(
-									Expression.LessThan(x, arrlen),
+									Expression.LessThan(arrXExp, arrLenExp),
 									Expression.Block(
-										Expression.Assign(readval, Expression.Call(
-											MethodGetDataReaderValue,
-											Expression.Constant(elementType, typeof(Type)),
-											Expression.Convert(Expression.ArrayAccess(arr, x), typeof(object))
-										)),
+										Expression.Assign(arrReadValExp, GetDataReaderValueBlockExpression(elementType, Expression.Call(arrExp, MethodArrayGetValue, arrXExp))),
 										Expression.IfThenElse(
-											Expression.Equal(readval, Expression.Constant(null)),
-											Expression.Assign(Expression.ArrayAccess(ret, x), Expression.Default(elementType)),
-											Expression.Assign(Expression.ArrayAccess(ret, x), Expression.Convert(readval, elementType))
+											Expression.Equal(arrReadValExp, Expression.Constant(null)),
+											Expression.Assign(Expression.ArrayAccess(arrNewExp, arrXExp), Expression.Default(elementType)),
+											Expression.Assign(Expression.ArrayAccess(arrNewExp, arrXExp), Expression.Convert(arrReadValExp, elementType))
 										),
-										Expression.PostIncrementAssign(x)
+										Expression.PostIncrementAssign(arrXExp)
 									),
-									Expression.Break(label, x)
+									Expression.Break(label, arrXExp)
 								),
 								label
 							),
-							Expression.Return(returnTarget, ret),
-							Expression.Label(returnTarget, Expression.Default(typeof(object)))
-						), parmExp).Compile();
+							Expression.Return(returnTarget, arrNewExp)
+						)
+					);
 				}
-
 				if (type.FullName.StartsWith("System.Nullable`1[")) type = type.GenericTypeArguments.First();
-				if (type.IsEnum) return Expression.Lambda<Func<object, object>>(
-					Expression.Call(
-						MethodEnumParse,
-						Expression.Constant(type, typeof(Type)),
-						Expression.Call(MethodToString, parmExp),
-						Expression.Constant(true, typeof(bool))
-					) , parmExp).Compile();
-
-				switch (type.FullName) {
-					case "System.Guid":
-						if (valueType != type) return Expression.Lambda<Func<object, object>>(
-							Expression.Convert(Expression.Call(MethodGuidParse, Expression.Convert(parmExp, typeof(string))), typeof(object))
-							, parmExp).Compile();
-						return Expression.Lambda<Func<object, object>>(parmExp, parmExp).Compile();
-
-					case "MygisPoint": return Expression.Lambda<Func<object, object>>(
-							Expression.TypeAs(
-								Expression.Call(MethodMygisGeometryParse, Expression.Convert(parmExp, typeof(string))),
-								typeof(MygisPoint)
-							), parmExp).Compile();
-					case "MygisLineString": return Expression.Lambda<Func<object, object>>(
-							Expression.TypeAs(
-								Expression.Call(MethodMygisGeometryParse, Expression.Convert(parmExp, typeof(string))), 
-								typeof(MygisLineString)
-							), parmExp).Compile();
-					case "MygisPolygon": return Expression.Lambda<Func<object, object>>(
-							Expression.TypeAs(
-								Expression.Call(MethodMygisGeometryParse, Expression.Convert(parmExp, typeof(string))), 
-								typeof(MygisPolygon)
-							), parmExp).Compile();
-					case "MygisMultiPoint": return Expression.Lambda<Func<object, object>>(
-							Expression.TypeAs(
-								Expression.Call(MethodMygisGeometryParse, Expression.Convert(parmExp, typeof(string))), 
-								typeof(MygisMultiPoint)
-							), parmExp).Compile();
-					case "MygisMultiLineString": return Expression.Lambda<Func<object, object>>(
-							Expression.TypeAs(
-								Expression.Call(MethodMygisGeometryParse, Expression.Convert(parmExp, typeof(string))), 
-								typeof(MygisMultiLineString)
-							), parmExp).Compile();
-					case "MygisMultiPolygon": return Expression.Lambda<Func<object, object>>(
-							Expression.TypeAs(
-								Expression.Call(MethodMygisGeometryParse, Expression.Convert(parmExp, typeof(string))), 
-								typeof(MygisMultiPolygon)
-							), parmExp).Compile();
-					case "Newtonsoft.Json.Linq.JToken": return Expression.Lambda<Func<object, object>>(
-							Expression.TypeAs(
-								Expression.Call(typeof(JToken).GetMethod("Parse", new[] { typeof(string) }), Expression.Convert(parmExp, typeof(string))), 
-								typeof(JToken)
-							), parmExp).Compile();
-					case "Newtonsoft.Json.Linq.JObject": return Expression.Lambda<Func<object, object>>(
-							Expression.TypeAs(
-								Expression.Call(typeof(JObject).GetMethod("Parse", new[] { typeof(string) }), Expression.Convert(parmExp, typeof(string))), 
-								typeof(JObject)
-							), parmExp).Compile();
-					case "Newtonsoft.Json.Linq.JArray": return Expression.Lambda<Func<object, object>>(
-							Expression.TypeAs(
-								Expression.Call(typeof(JArray).GetMethod("Parse", new[] { typeof(string) }), Expression.Convert(parmExp, typeof(string))), 
-								typeof(JArray)
-							), parmExp).Compile();
-					case "Npgsql.LegacyPostgis.PostgisGeometry": return Expression.Lambda<Func<object, object>>(parmExp, parmExp).Compile();
+				if (type.IsEnum) return Expression.Return(returnTarget, Expression.Call(MethodEnumParse, Expression.Constant(type, typeof(Type)), Expression.Call(MethodToString, valueExp), Expression.Constant(true, typeof(bool))));
+				switch(type.FullName) {
+					case "System.Guid": return Expression.IfThenElse(
+							Expression.TypeEqual(valueExp, type),
+							Expression.Return(returnTarget, valueExp),
+							Expression.Return(returnTarget, Expression.Convert(Expression.Call(MethodGuidParse, Expression.Convert(valueExp, typeof(string))), typeof(object)))
+						);
+					case "MygisPoint": return Expression.Return(returnTarget, Expression.TypeAs(Expression.Call(MethodMygisGeometryParse, Expression.Convert(valueExp, typeof(string))), typeof(MygisPoint)));
+					case "MygisLineString": return Expression.Return(returnTarget, Expression.TypeAs(Expression.Call(MethodMygisGeometryParse, Expression.Convert(valueExp, typeof(string))), typeof(MygisLineString)));
+					case "MygisPolygon": return Expression.Return(returnTarget, Expression.TypeAs(Expression.Call(MethodMygisGeometryParse, Expression.Convert(valueExp, typeof(string))), typeof(MygisPolygon)));
+					case "MygisMultiPoint": return Expression.Return(returnTarget, Expression.TypeAs(Expression.Call(MethodMygisGeometryParse, Expression.Convert(valueExp, typeof(string))), typeof(MygisMultiPoint)));
+					case "MygisMultiLineString": return Expression.Return(returnTarget, Expression.TypeAs(Expression.Call(MethodMygisGeometryParse, Expression.Convert(valueExp, typeof(string))), typeof(MygisMultiLineString)));
+					case "MygisMultiPolygon": return Expression.Return(returnTarget, Expression.TypeAs(Expression.Call(MethodMygisGeometryParse, Expression.Convert(valueExp, typeof(string))), typeof(MygisMultiPolygon)));
+					case "Newtonsoft.Json.Linq.JToken": return Expression.Return(returnTarget, Expression.TypeAs(Expression.Call(MethodJTokenParse, Expression.Convert(valueExp, typeof(string))), typeof(JToken)));
+					case "Newtonsoft.Json.Linq.JObject": return Expression.Return(returnTarget, Expression.TypeAs(Expression.Call(MethodJObjectParse, Expression.Convert(valueExp, typeof(string))), typeof(JObject)));
+					case "Newtonsoft.Json.Linq.JArray": return Expression.Return(returnTarget, Expression.TypeAs(Expression.Call(MethodJArrayParse, Expression.Convert(valueExp, typeof(string))), typeof(JArray)));
+					case "Npgsql.LegacyPostgis.PostgisGeometry": return Expression.Return(returnTarget, valueExp);
+					case "System.TimeSpan": return Expression.IfThenElse(
+							Expression.TypeEqual(valueExp, type),
+							Expression.Return(returnTarget, valueExp),
+							Expression.Return(returnTarget, Expression.Convert(Expression.Call(MethodTimeSpanFromSeconds, Expression.Call(MethodDoubleParse, Expression.Call(MethodToString, valueExp))), typeof(object)))
+						);
 				}
-				if (type != valueType) {
-					if (type.FullName == "System.TimeSpan") return Expression.Lambda<Func<object, object>>(
-						Expression.Convert(Expression.Call(
-							MethodTimeSpanFromSeconds,
-							Expression.Call(MethodDoubleParse, Expression.Call(MethodToString, parmExp))
-						), typeof(object)), parmExp).Compile();
-					return Expression.Lambda<Func<object, object>>(
-						Expression.Call(MethodConvertChangeType, parmExp, Expression.Constant(type, typeof(Type)))
-					, parmExp).Compile();
-				}
-				return Expression.Lambda<Func<object, object>>(parmExp, parmExp).Compile();
+				return Expression.IfThenElse(
+					Expression.TypeEqual(valueExp, type),
+					Expression.Return(returnTarget, valueExp),
+					Expression.Return(returnTarget, Expression.Call(MethodConvertChangeType, valueExp, Expression.Constant(type, typeof(Type))))
+				);
+			};
+
+			return Expression.Block(
+				new[] { valueExp },
+				Expression.Assign(valueExp, value),
+				Expression.IfThenElse(
+					Expression.Or(
+						Expression.Equal(valueExp, Expression.Constant(null)),
+						Expression.Equal(valueExp, Expression.Constant(DBNull.Value))
+					),
+					Expression.Return(returnTarget, Expression.Convert(Expression.Default(type), typeof(object))),
+					funcGetExpression()
+				), 
+				Expression.Label(returnTarget, Expression.Default(typeof(object)))
+			);
+		}
+		internal static object GetDataReaderValue(Type type, object value) {
+			if (value == null || value == DBNull.Value) return null;
+			var func = _dicGetDataReaderValue.GetOrAdd(type, k1 => new ConcurrentDictionary<Type, Func<object, object>>()).GetOrAdd(value.GetType(), valueType => {
+				var parmExp = Expression.Parameter(typeof(object), "value");
+				var exp = GetDataReaderValueBlockExpression(type, parmExp);
+				return Expression.Lambda<Func<object, object>>(exp, parmExp).Compile();
 			});
 			return func(value);
+
+			//var func = _dicGetDataReaderValue.GetOrAdd(type, k1 => new ConcurrentDictionary<Type, Func<object, object>>()).GetOrAdd(value.GetType(), valueType => {
+			//	var returnTarget = Expression.Label(typeof(object));
+			//	var parmExp = Expression.Parameter(typeof(object), "value");
+
+			//	if (type.FullName == "System.Byte[]") return Expression.Lambda<Func<object, object>>(parmExp, parmExp).Compile();
+
+			//	if (type.IsArray) {
+			//		var elementType = type.GetElementType();
+			//		if (elementType == valueType.GetElementType()) return Expression.Lambda<Func<object, object>>(parmExp, parmExp).Compile();
+
+			//		var ret = Expression.Variable(type, "ret");
+			//		var arr = Expression.Variable(valueType, "arr");
+			//		var arrlen = Expression.Variable(typeof(int), "arrlen");
+			//		var x = Expression.Variable(typeof(int), "x");
+			//		var readval = Expression.Variable(typeof(object), "readval");
+			//		var label = Expression.Label(typeof(int));
+			//		return Expression.Lambda<Func<object, object>>(
+			//			Expression.Block(
+			//				new[] { ret, arr, arrlen, readval, x },
+			//				Expression.Assign(arr, Expression.TypeAs(parmExp, valueType)),
+			//				Expression.Assign(arrlen, Expression.ArrayLength(arr)),
+			//				Expression.Assign(x, Expression.Constant(0)),
+			//				Expression.Assign(ret, Expression.NewArrayBounds(elementType, arrlen)),
+			//				Expression.Loop(
+			//					Expression.IfThenElse(
+			//						Expression.LessThan(x, arrlen),
+			//						Expression.Block(
+			//							Expression.Assign(readval, Expression.Call(
+			//								MethodGetDataReaderValue,
+			//								Expression.Constant(elementType, typeof(Type)),
+			//								Expression.Convert(Expression.ArrayAccess(arr, x), typeof(object))
+			//							)),
+			//							Expression.IfThenElse(
+			//								Expression.Equal(readval, Expression.Constant(null)),
+			//								Expression.Assign(Expression.ArrayAccess(ret, x), Expression.Default(elementType)),
+			//								Expression.Assign(Expression.ArrayAccess(ret, x), Expression.Convert(readval, elementType))
+			//							),
+			//							Expression.PostIncrementAssign(x)
+			//						),
+			//						Expression.Break(label, x)
+			//					),
+			//					label
+			//				),
+			//				Expression.Return(returnTarget, ret),
+			//				Expression.Label(returnTarget, Expression.Default(typeof(object)))
+			//			), parmExp).Compile();
+			//	}
+
+			//	if (type.FullName.StartsWith("System.Nullable`1[")) type = type.GenericTypeArguments.First();
+			//	if (type.IsEnum) return Expression.Lambda<Func<object, object>>(
+			//		Expression.Call(
+			//			MethodEnumParse,
+			//			Expression.Constant(type, typeof(Type)),
+			//			Expression.Call(MethodToString, parmExp),
+			//			Expression.Constant(true, typeof(bool))
+			//		) , parmExp).Compile();
+
+			//	switch (type.FullName) {
+			//		case "System.Guid":
+			//			if (valueType != type) return Expression.Lambda<Func<object, object>>(
+			//				Expression.Convert(Expression.Call(MethodGuidParse, Expression.Convert(parmExp, typeof(string))), typeof(object))
+			//				, parmExp).Compile();
+			//			return Expression.Lambda<Func<object, object>>(parmExp, parmExp).Compile();
+
+			//		case "MygisPoint": return Expression.Lambda<Func<object, object>>(
+			//				Expression.TypeAs(
+			//					Expression.Call(MethodMygisGeometryParse, Expression.Convert(parmExp, typeof(string))),
+			//					typeof(MygisPoint)
+			//				), parmExp).Compile();
+			//		case "MygisLineString": return Expression.Lambda<Func<object, object>>(
+			//				Expression.TypeAs(
+			//					Expression.Call(MethodMygisGeometryParse, Expression.Convert(parmExp, typeof(string))), 
+			//					typeof(MygisLineString)
+			//				), parmExp).Compile();
+			//		case "MygisPolygon": return Expression.Lambda<Func<object, object>>(
+			//				Expression.TypeAs(
+			//					Expression.Call(MethodMygisGeometryParse, Expression.Convert(parmExp, typeof(string))), 
+			//					typeof(MygisPolygon)
+			//				), parmExp).Compile();
+			//		case "MygisMultiPoint": return Expression.Lambda<Func<object, object>>(
+			//				Expression.TypeAs(
+			//					Expression.Call(MethodMygisGeometryParse, Expression.Convert(parmExp, typeof(string))), 
+			//					typeof(MygisMultiPoint)
+			//				), parmExp).Compile();
+			//		case "MygisMultiLineString": return Expression.Lambda<Func<object, object>>(
+			//				Expression.TypeAs(
+			//					Expression.Call(MethodMygisGeometryParse, Expression.Convert(parmExp, typeof(string))), 
+			//					typeof(MygisMultiLineString)
+			//				), parmExp).Compile();
+			//		case "MygisMultiPolygon": return Expression.Lambda<Func<object, object>>(
+			//				Expression.TypeAs(
+			//					Expression.Call(MethodMygisGeometryParse, Expression.Convert(parmExp, typeof(string))), 
+			//					typeof(MygisMultiPolygon)
+			//				), parmExp).Compile();
+			//		case "Newtonsoft.Json.Linq.JToken": return Expression.Lambda<Func<object, object>>(
+			//				Expression.TypeAs(
+			//					Expression.Call(typeof(JToken).GetMethod("Parse", new[] { typeof(string) }), Expression.Convert(parmExp, typeof(string))), 
+			//					typeof(JToken)
+			//				), parmExp).Compile();
+			//		case "Newtonsoft.Json.Linq.JObject": return Expression.Lambda<Func<object, object>>(
+			//				Expression.TypeAs(
+			//					Expression.Call(typeof(JObject).GetMethod("Parse", new[] { typeof(string) }), Expression.Convert(parmExp, typeof(string))), 
+			//					typeof(JObject)
+			//				), parmExp).Compile();
+			//		case "Newtonsoft.Json.Linq.JArray": return Expression.Lambda<Func<object, object>>(
+			//				Expression.TypeAs(
+			//					Expression.Call(typeof(JArray).GetMethod("Parse", new[] { typeof(string) }), Expression.Convert(parmExp, typeof(string))), 
+			//					typeof(JArray)
+			//				), parmExp).Compile();
+			//		case "Npgsql.LegacyPostgis.PostgisGeometry": return Expression.Lambda<Func<object, object>>(parmExp, parmExp).Compile();
+			//	}
+			//	if (type != valueType) {
+			//		if (type.FullName == "System.TimeSpan") return Expression.Lambda<Func<object, object>>(
+			//			Expression.Convert(Expression.Call(
+			//				MethodTimeSpanFromSeconds,
+			//				Expression.Call(MethodDoubleParse, Expression.Call(MethodToString, parmExp))
+			//			), typeof(object)), parmExp).Compile();
+			//		return Expression.Lambda<Func<object, object>>(
+			//			Expression.Call(MethodConvertChangeType, parmExp, Expression.Constant(type, typeof(Type)))
+			//		, parmExp).Compile();
+			//	}
+			//	return Expression.Lambda<Func<object, object>>(parmExp, parmExp).Compile();
+			//});
+			//return func(value);
 		}
 		internal static object GetDataReaderValue22(Type type, object value) {
 			if (value == null || value == DBNull.Value) return null;
@@ -558,7 +666,7 @@ namespace FreeSql.Internal {
 				var ret = Array.CreateInstance(elementType, len);
 				for (var a = 0; a < len; a++) {
 					var item = valueArr.GetValue(a);
-					ret.SetValue(GetDataReaderValue(elementType, item), a);
+					ret.SetValue(GetDataReaderValue22(elementType, item), a);
 				}
 				return ret;
 			}
diff --git a/FreeSql/PostgreSQL/PostgreSQLExpression.cs b/FreeSql/PostgreSQL/PostgreSQLExpression.cs
index 30a1e0f8..5518e66d 100644
--- a/FreeSql/PostgreSQL/PostgreSQLExpression.cs
+++ b/FreeSql/PostgreSQL/PostgreSQLExpression.cs
@@ -16,7 +16,7 @@ namespace FreeSql.PostgreSQL {
 			Func<Expression, string> getExp = exparg => ExpressionLambdaToSql(exparg, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName);
 			switch (exp.NodeType) {
 				case ExpressionType.ArrayLength:
-					var arrOperExp = getExp((exp as UnaryExpression));
+					var arrOperExp = getExp((exp as UnaryExpression).Operand);
 					if (arrOperExp.StartsWith("(") || arrOperExp.EndsWith(")")) return $"array_length(array[{arrOperExp.TrimStart('(').TrimEnd(')')}],1)";
 					return $"case when {arrOperExp} is null then 0 else array_length({arrOperExp},1) end";
 				case ExpressionType.Call: