- 增加 表达式树函数解析 byte[] Length；#505

FreeSql.Tests/FreeSql.Tests/FreeSql.Tests.xml

@@ -24,6 +24,86 @@
             支付Id
             </summary>
         </member>
+        <member name="P:FreeSql.Tests.Issues._507.BodyAuditEntity.ClassId">
+            <summary>
+            班期标识-BodyScheduleEntity班期主键
+            </summary>
+        </member>
+        <member name="P:FreeSql.Tests.Issues._507.BodyAuditEntity.Name">
+            <summary>
+            姓名
+            </summary>
+        </member>
+        <member name="P:FreeSql.Tests.Issues._507.BodyAuditEntity.Birthday">
+            <summary>
+            出生日期
+            </summary>
+        </member>
+        <member name="P:FreeSql.Tests.Issues._507.BodyAuditEntity.IdCard">
+            <summary>
+            身份证
+            </summary>
+        </member>
+        <member name="P:FreeSql.Tests.Issues._507.BodyAuditEntity.TelPhone">
+            <summary>
+            联系电话
+            </summary>
+        </member>
+        <member name="P:FreeSql.Tests.Issues._507.BodyAuditEntity.SchoolName">
+            <summary>
+            学校名称
+            </summary>
+        </member>
+        <member name="P:FreeSql.Tests.Issues._507.BodyAuditEntity.StuCCNL">
+            <summary>
+            初潮年龄
+            </summary>
+        </member>
+        <member name="P:FreeSql.Tests.Issues._507.BodyAuditEntity.Address">
+            <summary>
+            联系地址
+            </summary>
+        </member>
+        <member name="P:FreeSql.Tests.Issues._507.BodyAuditEntity.CheckUserId">
+            <summary>
+            审核人标识
+            </summary>
+        </member>
+        <member name="P:FreeSql.Tests.Issues._507.BodyAuditEntity.CheckUserName">
+            <summary>
+            审核人
+            </summary>
+        </member>
+        <member name="P:FreeSql.Tests.Issues._507.BodyAuditEntity.CheckTime">
+            <summary>
+            审核时间
+            </summary>
+        </member>
+        <member name="P:FreeSql.Tests.Issues._507.BodyAuditEntity.RefuseReason">
+            <summary>
+            拒绝原因
+            </summary>
+        </member>
+        <member name="P:FreeSql.Tests.Issues._507.BodyAuditEntity.CollectionDate">
+            <summary>
+            采集时间
+            </summary>
+        </member>
+        <member name="P:FreeSql.Tests.Issues._507.BodyAuditEntity.AttachmentId">
+            <summary>
+            附件标识（多附件）
+            </summary>
+        </member>
+        <member name="P:FreeSql.Tests.Issues._507.BodyAuditEntity.Sex">
+            <summary>
+            性别
+            </summary>
+        </member>
+        <member name="P:FreeSql.Tests.Issues._507.BodyAuditEntity.ClassInfo">
+            <summary>
+            班期信息
+            </summary>
+        </member>
         <member name="M:FreeSql.Tests.MySql.MySqlCodeFirstTest.Tb_alltype.Save">
             <summary>
             保存或添加，如果主键有值则尝试 Update，如果影响的行为 0 则尝试 Insert

FreeSql.Tests/FreeSql.Tests/Issues/505.cs

@@ -0,0 +1,52 @@
+using FreeSql.DataAnnotations;
+using Newtonsoft.Json;
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Text;
+using System.Threading;
+using Xunit;
+
+namespace FreeSql.Tests.Issues
+{
+    public class _505
+    {
+        [Fact]
+        public void ByteLengthTest()
+        {
+            TestLocal(g.sqlserver);
+            TestLocal(g.mysql);
+            TestLocal(g.pgsql);
+            TestLocal(g.oracle);
+            TestLocal(g.sqlite);
+            TestLocal(g.firebird);
+            TestLocal(g.dameng);
+            //TestLocal(g.kingbaseES); //
+            //TestLocal(g.shentong); // OCTET_LENGTH(xx) 返回结果32，值不符合
+            //TestLocal(g.msaccess); //lenb(xx) 返回结果 15，值不符合
+
+            void TestLocal(IFreeSql fsql)
+            {
+                var byteArray = Encoding.UTF8.GetBytes("我是中国人");
+                fsql.Delete<Model505>().Where("1=1").ExecuteAffrows();
+                fsql.Insert(new Model505 { ByteLength = byteArray.Length, ByteArray = byteArray }).ExecuteAffrows();
+
+                var item = fsql.Select<Model505>()
+                    //.Where(x => x.ByteArray.Length == x.ByteLength)
+                    .First(a => new { item = a, length = a.ByteArray.Length });
+
+                Assert.NotNull(item);
+                Assert.Equal(Encoding.UTF8.GetString(byteArray), Encoding.UTF8.GetString(item.item.ByteArray));
+                Assert.Equal(byteArray.Length, item.item.ByteLength);
+                Assert.Equal(byteArray.Length, item.length);
+            }
+        }
+        public class Model505
+        {
+            public Guid id { get; set; }
+            public byte[] ByteArray { get; set; }
+            public int ByteLength { get; set; }
+        }
+
+    }
+}

FreeSql.Tests/FreeSql.Tests/Issues/507.cs

@@ -0,0 +1,163 @@
+using FreeSql.DataAnnotations;
+using Newtonsoft.Json;
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Text;
+using System.Threading;
+using Xunit;
+
+namespace FreeSql.Tests.Issues
+{
+    public class _507
+    {
+        [Fact]
+        public void SelectTest()
+        {
+            var fsql = g.sqlite;
+            var _bodyAuditRepository = fsql.GetRepository<BodyAuditEntity>();
+
+            var sql = _bodyAuditRepository.Select
+                .Include(a => a.ClassInfo)
+                .Count(out var total)
+                .OrderBy(true, a => a.ClassInfo.period)
+                .OrderBy(true, a => a.ClassInfo.className)
+                .Page(2, 10)
+                .ToList();
+        }
+        public class BodyAuditEntity
+        {
+            public string Id { get; set; }
+
+            /// <summary>
+            /// 班期标识-BodyScheduleEntity班期主键
+            /// </summary>
+            [Column(Name = "ClassId", StringLength = 70, Position = 2)]
+            public string ClassId { get; set; }
+
+            /// <summary>
+            /// 姓名
+            /// </summary>
+            [Column(Name = "Name", StringLength = 20, Position = 3)]
+            public string Name { get; set; }
+
+
+
+            /// <summary>
+            /// 出生日期
+            /// </summary>
+            [Column(Name = "Birthday", StringLength = 20, Position = 5)]
+            public string Birthday { get; set; }
+
+            /// <summary>
+            /// 身份证
+            /// </summary>
+            [Column(Name = "IdCard", StringLength = 20, Position = 6)]
+            public string IdCard { get; set; }
+
+            /// <summary>
+            /// 联系电话
+            /// </summary>
+            [Column(Name = "TelPhone", StringLength = 15, Position = 7)]
+            public string TelPhone { get; set; }
+
+            /// <summary>
+            /// 学校名称
+            /// </summary>
+            [Column(Name = "SchoolName", StringLength = 50, Position = 8)]
+            public string SchoolName { get; set; }
+
+            /// <summary>
+            /// 初潮年龄
+            /// </summary>
+            [Column(Name = "StuCCNL", StringLength = 20, Position = 9)]
+            public int? StuCCNL { get; set; }
+
+            /// <summary>
+            /// 联系地址
+            /// </summary>
+            [Column(Name = "Address", StringLength = 100, Position = 10)]
+            public string Address { get; set; }
+
+            /// <summary>
+            /// 审核人标识
+            /// </summary>
+            [Column(Name = "CheckUserId", StringLength = 70)]
+            public string CheckUserId { get; set; }
+
+            /// <summary>
+            /// 审核人
+            /// </summary>
+            [Column(Name = "CheckUserName", StringLength = 20)]
+            public string CheckUserName { get; set; }
+
+            /// <summary>
+            /// 审核时间
+            /// </summary>
+            [Column(Name = "CheckTime")]
+            public DateTime? CheckTime { get; set; }
+
+            /// <summary>
+            /// 拒绝原因
+            /// </summary>
+            [Column(Name = "RefuseReason", StringLength = 100)]
+            public string RefuseReason { get; set; }
+
+            /// <summary>
+            /// 采集时间
+            /// </summary>
+            [Column(Name = "CollectionDate")]
+            public DateTime? CollectionDate { get; set; }
+
+            /// <summary>
+            /// 附件标识（多附件）
+            /// </summary>
+            [Column(Name = "AttachmentId", StringLength = 500)]
+            public string AttachmentId { get; set; }
+
+            /// <summary>
+            /// 性别
+            /// </summary>
+            [Column(Name = "Sex", StringLength = 2, Position = 4)]
+            public string Sex { get; set; }
+
+            #region 导航属性
+            /// <summary>
+            /// 班期信息
+            /// </summary>
+            [Navigate(nameof(ClassId))]
+            public virtual BodyScheduleEntity ClassInfo { get; set; }
+            #endregion
+        }
+        public class BodyScheduleEntity
+        {
+            public string Id { get; set; }
+
+            [Column(Name = "period")]
+            public int? period { get; set; }
+
+            [Column(Name = "maxQuota")]
+            public int? maxQuota { get; set; }
+
+            [Column(Name = "allDays")]
+            public int? allDays { get; set; }
+
+            [Column(Name = "schoolId", StringLength = 64)]
+            public string bodySchoolId { get; set; }
+
+            [Column(Name = "ownership", StringLength = 64)]
+            public string ownership { get; set; }
+
+
+            [Column(Name = "className", StringLength = 20)]
+            public string className { get; set; }
+
+            [Column(Name = "sex", StringLength = 10)]
+            public string sex { get; set; }
+
+            [Column(Name = "classType", StringLength = 20)]
+            public string classType { get; set; }
+        }
+
+    }
+}

Providers/FreeSql.Provider.Dameng/DamengExpression.cs

@@ -18,6 +18,10 @@ namespace FreeSql.Dameng
             Func<Expression, string> getExp = exparg => ExpressionLambdaToSql(exparg, tsc);
             switch (exp.NodeType)
             {
+                case ExpressionType.ArrayLength:
+                    var arrOper = (exp as UnaryExpression)?.Operand;
+                    if (arrOper.Type == typeof(byte[])) return $"lengthb({getExp(arrOper)})";
+                    break;
                 case ExpressionType.Convert:
                     var operandExp = (exp as UnaryExpression)?.Operand;
                     var gentype = exp.Type.NullableTypeOrThis();

Providers/FreeSql.Provider.Firebird/FirebirdExpression.cs

@@ -18,6 +18,10 @@ namespace FreeSql.Firebird
             Func<Expression, string> getExp = exparg => ExpressionLambdaToSql(exparg, tsc);
             switch (exp.NodeType)
             {
+                case ExpressionType.ArrayLength:
+                    var arrOper = (exp as UnaryExpression)?.Operand;
+                    if (arrOper.Type == typeof(byte[])) return $"octet_length({getExp(arrOper)})";
+                    break;
                 case ExpressionType.Convert:
                     var operandExp = (exp as UnaryExpression)?.Operand;
                     var gentype = exp.Type.NullableTypeOrThis();

Providers/FreeSql.Provider.KingbaseES/KingbaseESExpression.cs

@@ -19,6 +19,12 @@ namespace FreeSql.KingbaseES
             Func<Expression, string> getExp = exparg => ExpressionLambdaToSql(exparg, tsc);
             switch (exp.NodeType)
             {
+                case ExpressionType.ArrayLength:
+                    var arrOper = (exp as UnaryExpression)?.Operand;
+                    var arrOperExp = getExp(arrOper);
+                    if (arrOperExp.StartsWith("(") || arrOperExp.EndsWith(")")) return $"array_length(array[{arrOperExp.TrimStart('(').TrimEnd(')')}],1)";
+                    if (arrOper.Type == typeof(byte[])) return $"octet_length({getExp(arrOper)})";
+                    return $"case when {arrOperExp} is null then 0 else array_length({arrOperExp},1) end";
                 case ExpressionType.Convert:
                     var operandExp = (exp as UnaryExpression)?.Operand;
                     var gentype = exp.Type.NullableTypeOrThis();
@@ -45,10 +51,6 @@ namespace FreeSql.KingbaseES
                         }
                     }
                     break;
-                case ExpressionType.ArrayLength:
-                    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:
                     var callExp = exp as MethodCallExpression;
 

Providers/FreeSql.Provider.MsAccess/MsAccessExpression.cs

@@ -19,6 +19,10 @@ namespace FreeSql.MsAccess
             Func<Expression, string> getExp = exparg => ExpressionLambdaToSql(exparg, tsc);
             switch (exp.NodeType)
             {
+                //case ExpressionType.ArrayLength:
+                //    var arrOper = (exp as UnaryExpression)?.Operand;
+                //    if (arrOper.Type == typeof(byte[])) return $"lenb({getExp(arrOper)})";  #505
+                //    break;
                 case ExpressionType.Convert:
                     var operandExp = (exp as UnaryExpression)?.Operand;
                     var gentype = exp.Type.NullableTypeOrThis();

Providers/FreeSql.Provider.MySql/MySqlExpression.cs

@@ -20,6 +20,10 @@ namespace FreeSql.MySql
             Func<Expression, string> getExp = exparg => ExpressionLambdaToSql(exparg, tsc);
             switch (exp.NodeType)
             {
+                case ExpressionType.ArrayLength:
+                    var arrOper = (exp as UnaryExpression)?.Operand;
+                    if (arrOper.Type == typeof(byte[])) return $"octet_length({getExp(arrOper)})";
+                    break;
                 case ExpressionType.Convert:
                     var operandExp = (exp as UnaryExpression)?.Operand;
                     var gentype = exp.Type.NullableTypeOrThis();

Providers/FreeSql.Provider.Odbc/Dameng/OdbcDamengExpression.cs

@@ -18,6 +18,10 @@ namespace FreeSql.Odbc.Dameng
             Func<Expression, string> getExp = exparg => ExpressionLambdaToSql(exparg, tsc);
             switch (exp.NodeType)
             {
+                case ExpressionType.ArrayLength:
+                    var arrOper = (exp as UnaryExpression)?.Operand;
+                    if (arrOper.Type == typeof(byte[])) return $"lengthb({getExp(arrOper)})";
+                    break;
                 case ExpressionType.Convert:
                     var operandExp = (exp as UnaryExpression)?.Operand;
                     var gentype = exp.Type.NullableTypeOrThis();

Providers/FreeSql.Provider.Odbc/KingbaseES/OdbcKingbaseESExpression.cs

@@ -19,6 +19,12 @@ namespace FreeSql.Odbc.KingbaseES
             Func<Expression, string> getExp = exparg => ExpressionLambdaToSql(exparg, tsc);
             switch (exp.NodeType)
             {
+                case ExpressionType.ArrayLength:
+                    var arrOper = (exp as UnaryExpression)?.Operand;
+                    var arrOperExp = getExp(arrOper);
+                    if (arrOperExp.StartsWith("(") || arrOperExp.EndsWith(")")) return $"array_length(array[{arrOperExp.TrimStart('(').TrimEnd(')')}],1)";
+                    if (arrOper.Type == typeof(byte[])) return $"octet_length({getExp(arrOper)})";
+                    return $"case when {arrOperExp} is null then 0 else array_length({arrOperExp},1) end";
                 case ExpressionType.Convert:
                     var operandExp = (exp as UnaryExpression)?.Operand;
                     var gentype = exp.Type.NullableTypeOrThis();
@@ -45,10 +51,6 @@ namespace FreeSql.Odbc.KingbaseES
                         }
                     }
                     break;
-                case ExpressionType.ArrayLength:
-                    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:
                     var callExp = exp as MethodCallExpression;
 

Providers/FreeSql.Provider.Odbc/MySql/OdbcMySqlExpression.cs

@@ -18,6 +18,10 @@ namespace FreeSql.Odbc.MySql
             Func<Expression, string> getExp = exparg => ExpressionLambdaToSql(exparg, tsc);
             switch (exp.NodeType)
             {
+                case ExpressionType.ArrayLength:
+                    var arrOper = (exp as UnaryExpression)?.Operand;
+                    if (arrOper.Type == typeof(byte[])) return $"octet_length({getExp(arrOper)})";
+                    break;
                 case ExpressionType.Convert:
                     var operandExp = (exp as UnaryExpression)?.Operand;
                     var gentype = exp.Type.NullableTypeOrThis();

Providers/FreeSql.Provider.Odbc/Oracle/OdbcOracleExpression.cs

@@ -18,6 +18,10 @@ namespace FreeSql.Odbc.Oracle
             Func<Expression, string> getExp = exparg => ExpressionLambdaToSql(exparg, tsc);
             switch (exp.NodeType)
             {
+                case ExpressionType.ArrayLength:
+                    var arrOper = (exp as UnaryExpression)?.Operand;
+                    if (arrOper.Type == typeof(byte[])) return $"dbms_lob.getlength({getExp(arrOper)})";
+                    break;
                 case ExpressionType.Convert:
                     var operandExp = (exp as UnaryExpression)?.Operand;
                     var gentype = exp.Type.NullableTypeOrThis();

Providers/FreeSql.Provider.Odbc/PostgreSQL/OdbcPostgreSQLExpression.cs

@@ -19,6 +19,12 @@ namespace FreeSql.Odbc.PostgreSQL
             Func<Expression, string> getExp = exparg => ExpressionLambdaToSql(exparg, tsc);
             switch (exp.NodeType)
             {
+                case ExpressionType.ArrayLength:
+                    var arrOper = (exp as UnaryExpression)?.Operand;
+                    var arrOperExp = getExp(arrOper);
+                    if (arrOperExp.StartsWith("(") || arrOperExp.EndsWith(")")) return $"array_length(array[{arrOperExp.TrimStart('(').TrimEnd(')')}],1)";
+                    if (arrOper.Type == typeof(byte[])) return $"octet_length({getExp(arrOper)})";
+                    return $"case when {arrOperExp} is null then 0 else array_length({arrOperExp},1) end";
                 case ExpressionType.Convert:
                     var operandExp = (exp as UnaryExpression)?.Operand;
                     var gentype = exp.Type.NullableTypeOrThis();
@@ -45,10 +51,6 @@ namespace FreeSql.Odbc.PostgreSQL
                         }
                     }
                     break;
-                case ExpressionType.ArrayLength:
-                    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:
                     var callExp = exp as MethodCallExpression;
 

Providers/FreeSql.Provider.Odbc/SqlServer/OdbcSqlServerExpression.cs

@@ -18,6 +18,10 @@ namespace FreeSql.Odbc.SqlServer
             Func<Expression, string> getExp = exparg => ExpressionLambdaToSql(exparg, tsc);
             switch (exp.NodeType)
             {
+                case ExpressionType.ArrayLength:
+                    var arrOper = (exp as UnaryExpression)?.Operand;
+                    if (arrOper.Type == typeof(byte[])) return $"datalength({getExp(arrOper)})";
+                    break;
                 case ExpressionType.Convert:
                     var operandExp = (exp as UnaryExpression)?.Operand;
                     var gentype = exp.Type.NullableTypeOrThis();

Providers/FreeSql.Provider.Oracle/OracleExpression.cs

@@ -18,6 +18,10 @@ namespace FreeSql.Oracle
             Func<Expression, string> getExp = exparg => ExpressionLambdaToSql(exparg, tsc);
             switch (exp.NodeType)
             {
+                case ExpressionType.ArrayLength:
+                    var arrOper = (exp as UnaryExpression)?.Operand;
+                    if (arrOper.Type == typeof(byte[])) return $"dbms_lob.getlength({getExp(arrOper)})";
+                    break;
                 case ExpressionType.Convert:
                     var operandExp = (exp as UnaryExpression)?.Operand;
                     var gentype = exp.Type.NullableTypeOrThis();

Providers/FreeSql.Provider.PostgreSQL/PostgreSQLExpression.cs

@@ -20,6 +20,12 @@ namespace FreeSql.PostgreSQL
             Func<Expression, string> getExp = exparg => ExpressionLambdaToSql(exparg, tsc);
             switch (exp.NodeType)
             {
+                case ExpressionType.ArrayLength:
+                    var arrOper = (exp as UnaryExpression)?.Operand;
+                    var arrOperExp = getExp(arrOper);
+                    if (arrOperExp.StartsWith("(") || arrOperExp.EndsWith(")")) return $"array_length(array[{arrOperExp.TrimStart('(').TrimEnd(')')}],1)";
+                    if (arrOper.Type == typeof(byte[])) return $"octet_length({getExp(arrOper)})";
+                    return $"case when {arrOperExp} is null then 0 else array_length({arrOperExp},1) end";
                 case ExpressionType.Convert:
                     var operandExp = (exp as UnaryExpression)?.Operand;
                     var gentype = exp.Type.NullableTypeOrThis();
@@ -46,10 +52,6 @@ namespace FreeSql.PostgreSQL
                         }
                     }
                     break;
-                case ExpressionType.ArrayLength:
-                    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:
                     var callExp = exp as MethodCallExpression;
 

Providers/FreeSql.Provider.ShenTong/ShenTongExpression.cs

@@ -19,6 +19,12 @@ namespace FreeSql.ShenTong
             Func<Expression, string> getExp = exparg => ExpressionLambdaToSql(exparg, tsc);
             switch (exp.NodeType)
             {
+                case ExpressionType.ArrayLength:
+                    var arrOper = (exp as UnaryExpression)?.Operand;
+                    var arrOperExp = getExp(arrOper);
+                    if (arrOperExp.StartsWith("(") || arrOperExp.EndsWith(")")) return $"array_length(array[{arrOperExp.TrimStart('(').TrimEnd(')')}],1)";
+                    //if (arrOper.Type == typeof(byte[])) return $"octet_length({getExp(arrOper)})"; #505
+                    return $"case when {arrOperExp} is null then 0 else array_length({arrOperExp},1) end";
                 case ExpressionType.Convert:
                     var operandExp = (exp as UnaryExpression)?.Operand;
                     var gentype = exp.Type.NullableTypeOrThis();
@@ -45,10 +51,6 @@ namespace FreeSql.ShenTong
                         }
                     }
                     break;
-                case ExpressionType.ArrayLength:
-                    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:
                     var callExp = exp as MethodCallExpression;
 

Providers/FreeSql.Provider.SqlServer/SqlServerExpression.cs

@@ -18,6 +18,10 @@ namespace FreeSql.SqlServer
             Func<Expression, string> getExp = exparg => ExpressionLambdaToSql(exparg, tsc);
             switch (exp.NodeType)
             {
+                case ExpressionType.ArrayLength:
+                    var arrOper = (exp as UnaryExpression)?.Operand;
+                    if (arrOper.Type == typeof(byte[])) return $"datalength({getExp(arrOper)})";
+                    break;
                 case ExpressionType.Convert:
                     var operandExp = (exp as UnaryExpression)?.Operand;
                     var gentype = exp.Type.NullableTypeOrThis();

Providers/FreeSql.Provider.Sqlite/SqliteExpression.cs

@@ -18,6 +18,10 @@ namespace FreeSql.Sqlite
             Func<Expression, string> getExp = exparg => ExpressionLambdaToSql(exparg, tsc);
             switch (exp.NodeType)
             {
+                case ExpressionType.ArrayLength:
+                    var arrOper = (exp as UnaryExpression)?.Operand;
+                    if (arrOper.Type == typeof(byte[])) return $"length({getExp(arrOper)})";
+                    break;
                 case ExpressionType.Convert:
                     var operandExp = (exp as UnaryExpression)?.Operand;
                     var gentype = exp.Type.NullableTypeOrThis();