using FreeSql.Internal; using Newtonsoft.Json.Linq; using System; using System.Collections; using System.Collections.Generic; using System.Linq; using System.Linq.Expressions; using System.Text; using System.Text.RegularExpressions; namespace FreeSql.Xugu { class XuguExpression : CommonExpression { public XuguExpression(CommonUtils common) : base(common) { } public override string ExpressionLambdaToSqlOther(Expression exp, ExpTSC tsc) { Func 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(); if (gentype != operandExp.Type.NullableTypeOrThis()) { switch (exp.Type.NullableTypeOrThis().ToString()) { case "System.Boolean": return $"(cast({getExp(operandExp)} as varchar) not in ('0','false'))"; case "System.Byte": return $"cast({getExp(operandExp)} as tinyint)"; case "System.Char": return $"substring(cast({getExp(operandExp)} as varchar),1,1)"; case "System.DateTime": return ExpressionConstDateTime(operandExp) ?? $"cast({getExp(operandExp)} as datetime)"; case "System.Decimal": return $"cast({getExp(operandExp)} as numeric(36,18))"; case "System.Double": return $"cast({getExp(operandExp)} as numeric(32,16))"; case "System.Int16": return $"cast({getExp(operandExp)} as smallint)"; case "System.Int32": return $"cast({getExp(operandExp)} as int)"; case "System.Int64": return $"cast({getExp(operandExp)} as bigint)"; case "System.SByte": return $"cast({getExp(operandExp)} as tinyint)"; case "System.Single": return $"cast({getExp(operandExp)} as numeric(14,7))"; case "System.String": return gentype == typeof(Guid) ? $"cast({getExp(operandExp)} as char(36))" : $"cast({getExp(operandExp)} as {(gentype.IsNumberType() || gentype.IsEnum ? "varchar(100)" : "text")})"; case "System.UInt16": return $"cast({getExp(operandExp)} as smallint)"; case "System.UInt32": return $"cast({getExp(operandExp)} as int)"; case "System.UInt64": return $"cast({getExp(operandExp)} as numeric(20,0))"; case "System.Guid": return $"cast({getExp(operandExp)} as char(36))"; } } break; case ExpressionType.Call: var callExp = exp as MethodCallExpression; switch (callExp.Method.Name) { case "Parse": case "TryParse": switch (callExp.Method.DeclaringType.NullableTypeOrThis().ToString()) { case "System.Boolean": return $"(cast({getExp(callExp.Arguments[0])} as varchar) not in ('0','false'))"; case "System.Byte": return $"cast({getExp(callExp.Arguments[0])} as tinyint)"; case "System.Char": return $"substring(cast({getExp(callExp.Arguments[0])} as varchar),1,1)"; case "System.DateTime": return ExpressionConstDateTime(callExp.Arguments[0]) ?? $"cast({getExp(callExp.Arguments[0])} as datetime)"; case "System.Decimal": return $"cast({getExp(callExp.Arguments[0])} as numeric(36,18))"; case "System.Double": return $"cast({getExp(callExp.Arguments[0])} as numeric(32,16))"; case "System.Int16": return $"cast({getExp(callExp.Arguments[0])} as smallint)"; case "System.Int32": return $"cast({getExp(callExp.Arguments[0])} as int)"; case "System.Int64": return $"cast({getExp(callExp.Arguments[0])} as bigint)"; case "System.SByte": return $"cast({getExp(callExp.Arguments[0])} as tinyint)"; case "System.Single": return $"cast({getExp(callExp.Arguments[0])} as numeric(14,7))"; case "System.UInt16": return $"cast({getExp(callExp.Arguments[0])} as smallint)"; case "System.UInt32": return $"cast({getExp(callExp.Arguments[0])} as int)"; case "System.UInt64": return $"cast({getExp(callExp.Arguments[0])} as numeric(20,0))"; case "System.Guid": return $"cast({getExp(callExp.Arguments[0])} as char(36))"; } break; case "NewGuid": return null; case "Next": if (callExp.Object?.Type == typeof(Random)) return "cast(random()*1000000000 as int)"; return null; case "NextDouble": if (callExp.Object?.Type == typeof(Random)) return "random()"; return null; case "Random": if (callExp.Method.DeclaringType.IsNumberType()) return "random()"; return null; case "ToString": if (callExp.Object != null) { if (callExp.Object.Type.NullableTypeOrThis().IsEnum) { tsc.SetMapColumnTmp(null); var oldMapType = tsc.SetMapTypeReturnOld(typeof(string)); var enumStr = ExpressionLambdaToSql(callExp.Object, tsc); tsc.SetMapColumnTmp(null).SetMapTypeReturnOld(oldMapType); return enumStr; } return callExp.Arguments.Count == 0 ? $"cast({getExp(callExp.Object)} as text)" : null; } return null; } var objExp = callExp.Object; var objType = objExp?.Type; if (objType?.FullName == "System.Byte[]") return null; var argIndex = 0; if (objType == null && callExp.Method.DeclaringType == typeof(Enumerable)) { objExp = callExp.Arguments.FirstOrDefault(); objType = objExp?.Type; argIndex++; if (objType == typeof(string)) { switch (callExp.Method.Name) { case "First": case "FirstOrDefault": return $"substr({getExp(callExp.Arguments[0])}, 1, 1)"; } } } if (objType == null) objType = callExp.Method.DeclaringType; if (objType != null || objType.IsArrayOrList()) { if (argIndex >= callExp.Arguments.Count) break; tsc.SetMapColumnTmp(null); var args1 = getExp(callExp.Arguments[argIndex]); var oldMapType = tsc.SetMapTypeReturnOld(tsc.mapTypeTmp); var oldDbParams = objExp?.NodeType == ExpressionType.MemberAccess ? tsc.SetDbParamsReturnOld(null) : null; //#900 UseGenerateCommandParameterWithLambda(true) 子查询 bug、以及 #1173 参数化 bug tsc.isNotSetMapColumnTmp = true; var left = objExp == null ? null : getExp(objExp); tsc.isNotSetMapColumnTmp = false; tsc.SetMapColumnTmp(null).SetMapTypeReturnOld(oldMapType); if (oldDbParams != null) tsc.SetDbParamsReturnOld(oldDbParams); switch (callExp.Method.Name) { case "Contains": //判断 in //在各大 Provider AdoProvider 中已约定，500元素分割, 3空格\r\n4空格 return $"(({args1}) in {left.Replace(", \r\n \r\n", $") \r\n OR ({args1}) in (")})"; } } break; case ExpressionType.MemberAccess: var memExp = exp as MemberExpression; var memParentExp = memExp.Expression?.Type; if (memParentExp?.FullName == "System.Byte[]") return null; if (memParentExp != null) { if (memParentExp.IsArray == true) { var left = getExp(memExp.Expression); if (left.StartsWith("(") || left.EndsWith(")")) left = $"array[{left.TrimStart('(').TrimEnd(')')}]"; switch (memExp.Member.Name) { case "Length": case "Count": return $"case when {left} is null then 0 else array_length({left},1) end"; } } switch (memParentExp.FullName) { case "Newtonsoft.Json.Linq.JToken": case "Newtonsoft.Json.Linq.JObject": case "Newtonsoft.Json.Linq.JArray": var left = getExp(memExp.Expression); switch (memExp.Member.Name) { case "Count": return $"jsonb_array_length(coalesce({left},'[]'))"; } break; } if (memParentExp == typeof(Dictionary)) { var left = getExp(memExp.Expression); switch (memExp.Member.Name) { case "Count": return $"case when {left} is null then 0 else array_length(akeys({left}),1) end"; case "Keys": return $"akeys({left})"; case "Values": return $"avals({left})"; } } } break; case ExpressionType.NewArrayInit: var arrExp = exp as NewArrayExpression; var arrSb = new StringBuilder(); arrSb.Append("array["); for (var a = 0; a < arrExp.Expressions.Count; a++) { if (a > 0) arrSb.Append(","); arrSb.Append(getExp(arrExp.Expressions[a])); } if (arrSb.Length == 1) arrSb.Append("NULL"); return arrSb.Append("]").ToString(); case ExpressionType.ListInit: var listExp = exp as ListInitExpression; var listSb = new StringBuilder(); listSb.Append("("); for (var a = 0; a < listExp.Initializers.Count; a++) { if (listExp.Initializers[a].Arguments.Any() == false) continue; if (a > 0) listSb.Append(","); listSb.Append(getExp(listExp.Initializers[a].Arguments.FirstOrDefault())); } if (listSb.Length == 1) listSb.Append("NULL"); return listSb.Append(")").ToString(); case ExpressionType.New: var newExp = exp as NewExpression; if (typeof(IList).IsAssignableFrom(newExp.Type)) { if (newExp.Arguments.Count == 0) return "(NULL)"; if (typeof(IEnumerable).IsAssignableFrom(newExp.Arguments[0].Type) == false) return "(NULL)"; return getExp(newExp.Arguments[0]); } return null; } return null; } public override string ExpressionLambdaToSqlMemberAccessString(MemberExpression exp, ExpTSC tsc) { if (exp.Expression == null) { switch (exp.Member.Name) { case "Empty": return "''"; } return null; } var left = ExpressionLambdaToSql(exp.Expression, tsc); switch (exp.Member.Name) { case "Length": return $"char_length({left})"; } return null; } public override string ExpressionLambdaToSqlMemberAccessDateTime(MemberExpression exp, ExpTSC tsc) { if (exp.Expression == null) { switch (exp.Member.Name) { case "Now": return _common.Now; case "UtcNow": return _common.NowUtc; case "Today": return "convert(char(10),getdate(),120)"; case "MinValue": return "'1753/1/1 0:00:00'"; case "MaxValue": return "'9999/12/31 23:59:59'"; } return null; } var left = ExpressionLambdaToSql(exp.Expression, tsc); switch (exp.Member.Name) { case "Date": return $"cast(date_format({left},'%Y-%m-%d') as datetime)"; case "TimeOfDay": return $"datediff(second, date_format({left},'%Y-%m-%d'), {left})"; case "DayOfWeek": return $"(datepart(weekday, {left})-1)"; case "Day": return $"datepart(day, {left})"; case "DayOfYear": return $"datepart(dayofyear, {left})"; case "Month": return $"datepart(month, {left})"; case "Year": return $"datepart(year, {left})"; case "Hour": return $"datepart(hour, {left})"; case "Minute": return $"datepart(minute, {left})"; case "Second": return $"datepart(second, {left})"; case "Millisecond": return $"(datepart(millisecond, {left})/1000)"; case "Ticks": return $"(cast(datediff(second, '1970-1-1', {left}) as bigint)*10000000+621355968000000000)"; } return null; } public override string ExpressionLambdaToSqlMemberAccessTimeSpan(MemberExpression exp, ExpTSC tsc) { if (exp.Expression == null) { switch (exp.Member.Name) { case "Zero": return "0"; case "MinValue": return "-922337203685477580"; //微秒 Ticks / 10 case "MaxValue": return "922337203685477580"; } return null; } var left = ExpressionLambdaToSql(exp.Expression, tsc); switch (exp.Member.Name) { case "Days": return $"floor(({left})/{60 * 60 * 24})"; case "Hours": return $"floor(({left})/{60 * 60}%24)"; case "Milliseconds": return $"(cast({left} as bigint)*1000)"; case "Minutes": return $"floor(({left})/60%60)"; case "Seconds": return $"(({left})%60)"; case "Ticks": return $"(cast({left} as bigint)*10000000)"; case "TotalDays": return $"(({left})/{60 * 60 * 24})"; case "TotalHours": return $"(({left})/{60 * 60})"; case "TotalMilliseconds": return $"(cast({left} as bigint)*1000)"; case "TotalMinutes": return $"(({left})/60)"; case "TotalSeconds": return $"({left})"; } return null; } public override string ExpressionLambdaToSqlCallString(MethodCallExpression exp, ExpTSC tsc) { Func getExp = exparg => ExpressionLambdaToSql(exparg, tsc); if (exp.Object == null) { switch (exp.Method.Name) { case "IsNullOrEmpty": var arg1 = getExp(exp.Arguments[0]); return $"({arg1} is null or {arg1} = '')"; case "IsNullOrWhiteSpace": var arg2 = getExp(exp.Arguments[0]); return $"({arg2} is null or {arg2} = '' or ltrim({arg2}) = '')"; case "Concat": return _common.StringConcat(exp.Arguments.Select(a => getExp(a)).ToArray(), null); case "Format": if (exp.Arguments[0].NodeType != ExpressionType.Constant) throw new Exception(CoreStrings.Not_Implemented_Expression_ParameterUseConstant(exp,exp.Arguments[0])); var expArgsHack = exp.Arguments.Count == 2 && exp.Arguments[1].NodeType == ExpressionType.NewArrayInit ? (exp.Arguments[1] as NewArrayExpression).Expressions : exp.Arguments.Where((a, z) => z > 0); //3个 {} 时，Arguments 解析出来是分开的 //4个 {} 时，Arguments[1] 只能解析这个出来，然后里面是 NewArray [] var expArgs = expArgsHack.Select(a => { var atype = (a as UnaryExpression)?.Operand.Type.NullableTypeOrThis() ?? a.Type.NullableTypeOrThis(); if (atype == typeof(string)) return $"'||{_common.IsNull(ExpressionLambdaToSql(a, tsc), "''")}||'"; return $"'||{_common.IsNull($"cast({ExpressionLambdaToSql(a, tsc)} text)", "''")}||'"; }).ToArray(); return string.Format(ExpressionLambdaToSql(exp.Arguments[0], tsc), expArgs); case "Join": if (exp.IsStringJoin(out var tolistObjectExp, out var toListMethod, out var toListArgs1)) { var newToListArgs0 = Expression.Call(tolistObjectExp, toListMethod, Expression.Lambda( Expression.Call( typeof(SqlExtExtensions).GetMethod("StringJoinPgsqlGroupConcat"), Expression.Convert(toListArgs1.Body, typeof(object)), Expression.Convert(exp.Arguments[0], typeof(object))), toListArgs1.Parameters)); var newToListSql = getExp(newToListArgs0); return newToListSql; } break; } } else { var left = getExp(exp.Object); switch (exp.Method.Name) { case "StartsWith": case "EndsWith": case "Contains": var args0Value = getExp(exp.Arguments[0]); if (args0Value == "NULL") return $"({left}) IS NULL"; if (args0Value.Contains("%")) { if (exp.Method.Name == "StartsWith") return $"strpos({args0Value}, {left}) = 1"; if (exp.Method.Name == "EndsWith") return $"strpos({args0Value}, {left}) = char_length({args0Value})"; return $"strpos({args0Value}, {left}) > 0"; } var likeOpt = "LIKE"; if (exp.Arguments.Count > 1) { if (exp.Arguments[1].Type == typeof(bool) || exp.Arguments[1].Type == typeof(StringComparison)) likeOpt = "ILIKE"; } if (exp.Method.Name == "StartsWith") return $"({left}) {likeOpt} {(args0Value.EndsWith("'") ? args0Value.Insert(args0Value.Length - 1, "%") : $"(cast({args0Value} as text) || '%')")}"; if (exp.Method.Name == "EndsWith") return $"({left}) {likeOpt} {(args0Value.StartsWith("'") ? args0Value.Insert(1, "%") : $"('%' || cast({args0Value} as text))")}"; if (args0Value.StartsWith("'") && args0Value.EndsWith("'")) return $"({left}) {likeOpt} {args0Value.Insert(1, "%").Insert(args0Value.Length, "%")}"; return $"({left}) {likeOpt} ('%' || cast({args0Value} as text) || '%')"; case "ToLower": return $"lower({left})"; case "ToUpper": return $"upper({left})"; case "Substring": var substrArgs1 = getExp(exp.Arguments[0]); if (long.TryParse(substrArgs1, out var testtrylng1)) substrArgs1 = (testtrylng1 + 1).ToString(); else substrArgs1 += "+1"; if (exp.Arguments.Count == 1) return $"substr({left}, {substrArgs1})"; return $"substr({left}, {substrArgs1}, {getExp(exp.Arguments[1])})"; case "IndexOf": return $"(strpos({left}, {getExp(exp.Arguments[0])})-1)"; case "PadLeft": if (exp.Arguments.Count == 1) return $"lpad({left}, {getExp(exp.Arguments[0])})"; return $"lpad({left}, {getExp(exp.Arguments[0])}, {getExp(exp.Arguments[1])})"; case "PadRight": if (exp.Arguments.Count == 1) return $"rpad({left}, {getExp(exp.Arguments[0])})"; return $"rpad({left}, {getExp(exp.Arguments[0])}, {getExp(exp.Arguments[1])})"; case "Trim": case "TrimStart": case "TrimEnd": if (exp.Arguments.Count == 0) { if (exp.Method.Name == "Trim") return $"trim({left})"; if (exp.Method.Name == "TrimStart") return $"ltrim({left})"; if (exp.Method.Name == "TrimEnd") return $"rtrim({left})"; } var trimArg1 = ""; var trimArg2 = ""; foreach (var argsTrim02 in exp.Arguments) { var argsTrim01s = new[] { argsTrim02 }; if (argsTrim02.NodeType == ExpressionType.NewArrayInit) { var arritem = argsTrim02 as NewArrayExpression; argsTrim01s = arritem.Expressions.ToArray(); } foreach (var argsTrim01 in argsTrim01s) { var trimChr = getExp(argsTrim01).Trim('\''); if (trimChr.Length == 1) trimArg1 += trimChr; else trimArg2 += $" || ({trimChr})"; } } if (exp.Method.Name == "Trim") left = $"trim({left}, {_common.FormatSql("{0}", trimArg1)}{trimArg2})"; if (exp.Method.Name == "TrimStart") left = $"ltrim({left}, {_common.FormatSql("{0}", trimArg1)}{trimArg2})"; if (exp.Method.Name == "TrimEnd") left = $"rtrim({left}, {_common.FormatSql("{0}", trimArg1)}{trimArg2})"; return left; case "Replace": return $"replace({left}, {getExp(exp.Arguments[0])}, {getExp(exp.Arguments[1])})"; case "CompareTo": return $"case when {left} = {getExp(exp.Arguments[0])} then 0 when {left} > {getExp(exp.Arguments[0])} then 1 else -1 end"; case "Equals": return $"({left} = cast({getExp(exp.Arguments[0])} text))"; } } return null; } public override string ExpressionLambdaToSqlCallMath(MethodCallExpression exp, ExpTSC tsc) { Func getExp = exparg => ExpressionLambdaToSql(exparg, tsc); switch (exp.Method.Name) { case "Abs": return $"abs({getExp(exp.Arguments[0])})"; case "Sign": return $"sign({getExp(exp.Arguments[0])})"; case "Floor": return $"floor({getExp(exp.Arguments[0])})"; case "Ceiling": return $"ceiling({getExp(exp.Arguments[0])})"; case "Round": if (exp.Arguments.Count > 1 && exp.Arguments[1].Type.FullName == "System.Int32") return $"round({getExp(exp.Arguments[0])}, {getExp(exp.Arguments[1])})"; return $"round({getExp(exp.Arguments[0])})"; case "Exp": return $"exp({getExp(exp.Arguments[0])})"; case "Log": return $"log({getExp(exp.Arguments[0])})"; case "Log10": return $"log10({getExp(exp.Arguments[0])})"; case "Pow": return $"pow({getExp(exp.Arguments[0])}, {getExp(exp.Arguments[1])})"; case "Sqrt": return $"sqrt({getExp(exp.Arguments[0])})"; case "Cos": return $"cos({getExp(exp.Arguments[0])})"; case "Sin": return $"sin({getExp(exp.Arguments[0])})"; case "Tan": return $"tan({getExp(exp.Arguments[0])})"; case "Acos": return $"acos({getExp(exp.Arguments[0])})"; case "Asin": return $"asin({getExp(exp.Arguments[0])})"; case "Atan": return $"atan({getExp(exp.Arguments[0])})"; case "Atan2": return $"atan2({getExp(exp.Arguments[0])}, {getExp(exp.Arguments[1])})"; case "Truncate": return $"trunc({getExp(exp.Arguments[0])}, 0)"; } return null; } public override string ExpressionLambdaToSqlCallDateTime(MethodCallExpression exp, ExpTSC tsc) { Func getExp = exparg => ExpressionLambdaToSql(exparg, tsc); if (exp.Object == null) { switch (exp.Method.Name) { case "Compare": return $"({getExp(exp.Arguments[0])} - ({getExp(exp.Arguments[1])}))"; case "DaysInMonth": return $"datepart(day, dateadd(day, -1, dateadd(month, 1, cast({getExp(exp.Arguments[0])} as varchar(100)) + '-' + cast({getExp(exp.Arguments[1])} as varchar(100)) + '-1')))"; case "Equals": return $"({getExp(exp.Arguments[0])} = {getExp(exp.Arguments[1])})"; case "IsLeapYear": var isLeapYearArgs1 = getExp(exp.Arguments[0]); return $"(({isLeapYearArgs1})%4=0 AND ({isLeapYearArgs1})%100<>0 OR ({isLeapYearArgs1})%400=0)"; case "Parse": return ExpressionConstDateTime(exp.Arguments[0]) ?? $"cast({getExp(exp.Arguments[0])} as datetime)"; case "ParseExact": case "TryParse": case "TryParseExact": return ExpressionConstDateTime(exp.Arguments[0]) ?? $"cast({getExp(exp.Arguments[0])} as datetime)"; } } else { var left = getExp(exp.Object); var args1 = exp.Arguments.Count == 0 ? null : getExp(exp.Arguments[0]); switch (exp.Method.Name) { case "Add": return $"date_add({left}, interval '{args1}' microsecond)"; case "AddDays": return $"date_add({left}, interval '{args1}' day)"; case "AddHours": return $"date_add({left}, interval '{args1}' hour)"; case "AddMilliseconds": return $"date_add({left}, interval '{args1}'*1000 microsecond)"; case "AddMinutes": return $"date_add({left}, interval '{args1}' minute)"; case "AddMonths": return $"date_add({left}, interval '{args1}' month)"; case "AddSeconds": return $"date_add({left}, interval '{args1}' second)"; case "AddTicks": return $"date_add({left}, interval '{args1}'/10 microsecond)"; case "AddYears": return $"date_add({left}, interval '{args1}' year)"; case "Subtract": switch ((exp.Arguments[0].Type.IsNullableType() ? exp.Arguments[0].Type.GetGenericArguments().FirstOrDefault() : exp.Arguments[0].Type).FullName) { case "System.DateTime": return $"datediff(second, {args1}, {left})"; case "System.TimeSpan": return $"dateadd(second, ({args1})*-1, {left})"; } break; case "Equals": return $"({left} = {args1})"; case "CompareTo": return $"datediff(second,{args1},{left})"; case "ToString": if (exp.Arguments.Count == 0) return $"date_format({left},'%Y-%m-%d %H:%i:%s.%f')"; switch (args1) { case "'yyyy-MM-dd HH:mm:ss'": return $"date_format({left},'%Y-%m-%d %H:%i:%s')"; case "'yyyy-MM-dd HH:mm'": return $"date_format({left},'%Y-%m-%d %H:%i')"; case "'yyyy-MM-dd HH'": return $"date_format({left},'%Y-%m-%d %H')"; case "'yyyy-MM-dd'": return $"date_format({left},'%Y-%m-%d')"; case "'yyyy-MM'": return $"date_format({left},'%Y-%m')"; case "'yyyyMMddHHmmss'": return $"date_format({left},'%Y%m%d%H%i%s')"; case "'yyyyMMddHHmm'": return $"date_format({left},'%Y%m%d%H%i')"; case "'yyyyMMddHH'": return $"date_format({left},'%Y%m%d%H')"; case "'yyyyMMdd'": return $"date_format({left},'%Y%m%d')"; case "'yyyyMM'": return $"date_format({left},'%Y%m')"; case "'yyyy'": return $"date_format({left},'%Y')"; case "'HH:mm:ss'": return $"date_format({left},'%H:%i:%s')"; } args1 = Regex.Replace(args1, "(yyyy|yy|MM|M|dd|d|HH|H|hh|h|mm|ss|tt)", m => { switch (m.Groups[1].Value) { case "yyyy": return $"%Y"; case "yy": return $"%y"; case "MM": return $"%_a1"; case "M": return $"%c"; case "dd": return $"%d"; case "d": return $"%e"; case "HH": return $"%H"; case "H": return $"%k"; case "hh": return $"%h"; case "h": return $"%l"; case "mm": return $"%i"; case "ss": return $"%_a2"; case "tt": return $"%p"; } return m.Groups[0].Value; }); var argsFinds = new[] { "%Y", "%y", "%_a1", "%c", "%d", "%e", "%H", "%k", "%h", "%l", "%i", "%_a2", "%p" }; var argsSpts = Regex.Split(args1, "(m|s|t)"); for (var a = 0; a < argsSpts.Length; a++) { switch (argsSpts[a]) { case "m": argsSpts[a] = $"case when substr(date_format({left},'%i'),1,1) = '0' then substr(date_format({left},'%i'),2,1) else date_format({left},'%i') end"; break; case "s": argsSpts[a] = $"case when substr(date_format({left},'%s'),1,1) = '0' then substr(date_format({left},'%s'),2,1) else date_format({left},'%s') end"; break; case "t": argsSpts[a] = $"trim(trailing 'M' from date_format({left},'%p'))"; break; default: var argsSptsA = argsSpts[a]; if (argsSptsA.StartsWith("'")) argsSptsA = argsSptsA.Substring(1); if (argsSptsA.EndsWith("'")) argsSptsA = argsSptsA.Remove(argsSptsA.Length - 1); argsSpts[a] = argsFinds.Any(m => argsSptsA.Contains(m)) ? $"date_format({left},'{argsSptsA}')" : $"'{argsSptsA}'"; break; } } if (argsSpts.Length > 0) args1 = $"concat({string.Join(", ", argsSpts.Where(a => a != "''"))})"; return args1.Replace("%_a1", "%m").Replace("%_a2", "%s"); } } return null; } public override string ExpressionLambdaToSqlCallTimeSpan(MethodCallExpression exp, ExpTSC tsc) { Func getExp = exparg => ExpressionLambdaToSql(exparg, tsc); if (exp.Object == null) { switch (exp.Method.Name) { case "Compare": return $"({getExp(exp.Arguments[0])}-({getExp(exp.Arguments[1])}))"; case "Equals": return $"({getExp(exp.Arguments[0])} = {getExp(exp.Arguments[1])})"; case "FromDays": return $"(({getExp(exp.Arguments[0])})*{60 * 60 * 24})"; case "FromHours": return $"(({getExp(exp.Arguments[0])})*{60 * 60})"; case "FromMilliseconds": return $"(({getExp(exp.Arguments[0])})/1000)"; case "FromMinutes": return $"(({getExp(exp.Arguments[0])})*60)"; case "FromSeconds": return $"({getExp(exp.Arguments[0])})"; case "FromTicks": return $"(({getExp(exp.Arguments[0])})/10000000)"; case "Parse": return $"cast({getExp(exp.Arguments[0])} as bigint)"; case "ParseExact": case "TryParse": case "TryParseExact": return $"cast({getExp(exp.Arguments[0])} as bigint)"; } } else { var left = getExp(exp.Object); var args1 = exp.Arguments.Count == 0 ? null : getExp(exp.Arguments[0]); switch (exp.Method.Name) { case "Add": return $"({left}+{args1})"; case "Subtract": return $"({left}-({args1}))"; case "Equals": return $"({left} = {args1})"; case "CompareTo": return $"({left}-({args1}))"; case "ToString": return $"cast({left} as varchar(100))"; } } return null; } public override string ExpressionLambdaToSqlCallConvert(MethodCallExpression exp, ExpTSC tsc) { Func getExp = exparg => ExpressionLambdaToSql(exparg, tsc); if (exp.Object == null) { switch (exp.Method.Name) { case "ToBoolean": return $"(cast({getExp(exp.Arguments[0])} as varchar) not in ('0','false'))"; case "ToByte": return $"cast({getExp(exp.Arguments[0])} as tinyint)"; case "ToChar": return $"substring(cast({getExp(exp.Arguments[0])} as varchar),1,1)"; case "ToDateTime": return ExpressionConstDateTime(exp.Arguments[0]) ?? $"cast({getExp(exp.Arguments[0])} as datetime)"; case "ToDecimal": return $"cast({getExp(exp.Arguments[0])} as numeric(36,18))"; case "ToDouble": return $"cast({getExp(exp.Arguments[0])} as numeric(32,16))"; case "ToInt16": return $"cast({getExp(exp.Arguments[0])} as smallint)"; case "ToInt32": return $"cast({getExp(exp.Arguments[0])} as int)"; case "ToInt64": return $"cast({getExp(exp.Arguments[0])} as bigint)"; case "ToSByte": return $"cast({getExp(exp.Arguments[0])} as tinyint)"; case "ToSingle": return $"cast({getExp(exp.Arguments[0])} as numeric(14,7))"; case "ToString": var gentype = exp.Arguments[0].Type.NullableTypeOrThis(); return gentype == typeof(Guid) ? $"cast({getExp(exp.Arguments[0])} as char(36))" : $"cast({getExp(exp.Arguments[0])} as {(gentype.IsNumberType() || gentype.IsEnum ? "varchar(100)" : "text")})"; case "ToUInt16": return $"cast({getExp(exp.Arguments[0])} as smallint)"; case "ToUInt32": return $"cast({getExp(exp.Arguments[0])} as int)"; case "ToUInt64": return $"cast({getExp(exp.Arguments[0])} as numeric(20,0))"; } } return null; } } }