using FreeSql.Internal; using System; using System.Collections; using System.Linq; using System.Linq.Expressions; using System.Text; using System.Text.RegularExpressions; namespace FreeSql.Sqlite { class SqliteExpression : CommonExpression { public SqliteExpression(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; if (arrOper.Type == typeof(byte[])) return $"length({getExp(arrOper)})"; break; 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 $"({getExp(operandExp)} not in ('0','false'))"; case "System.Byte": return $"cast({getExp(operandExp)} as int2)"; case "System.Char": return $"substr(cast({getExp(operandExp)} as character), 1, 1)"; case "System.DateTime": return ExpressionConstDateTime(operandExp) ?? $"datetime({getExp(operandExp)})"; case "System.Decimal": return $"cast({getExp(operandExp)} as decimal(36,18))"; case "System.Double": return $"cast({getExp(operandExp)} as double)"; case "System.Int16": case "System.Int32": case "System.Int64": case "System.SByte": return $"cast({getExp(operandExp)} as smallint)"; case "System.Single": return $"cast({getExp(operandExp)} as float)"; case "System.String": return $"cast({getExp(operandExp)} as character)"; case "System.UInt16": return $"cast({getExp(operandExp)} as unsigned)"; case "System.UInt32": return $"cast({getExp(operandExp)} as decimal(10,0))"; case "System.UInt64": return $"cast({getExp(operandExp)} as decimal(21,0))"; case "System.Guid": return $"substr(cast({getExp(operandExp)} as character), 1, 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 $"({getExp(callExp.Arguments[0])} not in ('0','false'))"; case "System.Byte": return $"cast({getExp(callExp.Arguments[0])} as int2)"; case "System.Char": return $"substr(cast({getExp(callExp.Arguments[0])} as character), 1, 1)"; case "System.DateTime": return ExpressionConstDateTime(callExp.Arguments[0]) ?? $"datetime({getExp(callExp.Arguments[0])})"; case "System.Decimal": return $"cast({getExp(callExp.Arguments[0])} as decimal(36,18))"; case "System.Double": return $"cast({getExp(callExp.Arguments[0])} as double)"; case "System.Int16": case "System.Int32": case "System.Int64": case "System.SByte": return $"cast({getExp(callExp.Arguments[0])} as smallint)"; case "System.Single": return $"cast({getExp(callExp.Arguments[0])} as float)"; case "System.UInt16": return $"cast({getExp(callExp.Arguments[0])} as unsigned)"; case "System.UInt32": return $"cast({getExp(callExp.Arguments[0])} as decimal(10,0))"; case "System.UInt64": return $"cast({getExp(callExp.Arguments[0])} as decimal(21,0))"; case "System.Guid": return $"substr(cast({getExp(callExp.Arguments[0])} as character), 1, 36)"; } return null; 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; } var value = ExpressionGetValue(callExp.Object, out var success); if (success) return formatSql(value, typeof(string), null, null); return callExp.Arguments.Count == 0 ? $"cast({getExp(callExp.Object)} as character)" : 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.NewArrayInit: var arrExp = exp as NewArrayExpression; var arrSb = new StringBuilder(); arrSb.Append("("); for (var a = 0; a < arrExp.Expressions.Count; a++) { if (a > 0) arrSb.Append(","); if (a % 500 == 499) arrSb.Append(" \r\n \r\n"); //500元素分割, 3空格\r\n4空格 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 $"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 "date(current_timestamp,'localtime')"; case "MinValue": return "datetime('0001-01-01 00:00:00.000')"; case "MaxValue": return "datetime('9999-12-31 23:59:59.999')"; } return null; } var left = ExpressionLambdaToSql(exp.Expression, tsc); switch (exp.Member.Name) { case "Date": return $"date({left})"; case "TimeOfDay": return $"strftime('%H:%M:%f',{left})"; case "DayOfWeek": return $"CAST(strftime('%w',{left}) AS INTEGER) "; case "Day": return $"CAST(strftime('%d',{left}) AS INTEGER) "; case "DayOfYear": return $"CAST(strftime('%j',{left}) AS INTEGER) "; case "Month": return $"CAST(strftime('%m',{left}) AS INTEGER) "; case "Year": return $"CAST(strftime('%Y',{left}) AS INTEGER) "; case "Hour": return $"CAST(strftime('%H',{left}) AS INTEGER) "; case "Minute": return $"CAST(strftime('%M',{left}) AS INTEGER) "; case "Second": return $"CAST(strftime('%S',{left}) AS INTEGER) "; case "Millisecond": return $"CAST(strftime('%f',{left})*1000.0%1000.0 AS INTEGER)"; case "Ticks": return $"CAST(((strftime( '%J',{left}) - 1721425.5 ) * {TimeSpan.TicksPerDay} ) AS INTEGER ) ";//精度到毫秒 } 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 "-922337203685.477580"; //秒 Ticks / 1000,000,0 case "MaxValue": return "922337203685.477580"; } 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": if (exp.Arguments.Count == 1 && exp.Arguments[0].NodeType == ExpressionType.NewArrayInit && exp.Arguments[0] is NewArrayExpression concatNewArrExp) return _common.StringConcat(concatNewArrExp.Expressions.Select(a => getExp(a)).ToArray(), null); 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 => $"'||{_common.IsNull(ExpressionLambdaToSql(a, tsc), "''")}||'").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("StringJoinSqliteGroupConcat"), 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 $"instr({left}, {args0Value}) = 1"; if (exp.Method.Name == "EndsWith") return $"instr({left}, {args0Value}) = length({left})-length({args0Value})+1"; return $"instr({left}, {args0Value}) > 0"; } if (exp.Method.Name == "StartsWith") return $"({left}) LIKE {(args0Value.EndsWith("'") ? args0Value.Insert(args0Value.Length - 1, "%") : $"({args0Value})||'%'")}"; if (exp.Method.Name == "EndsWith") return $"({left}) LIKE {(args0Value.StartsWith("'") ? args0Value.Insert(1, "%") : $"'%'||({args0Value})")}"; if (args0Value.StartsWith("'") && args0Value.EndsWith("'")) return $"({left}) LIKE {args0Value.Insert(1, "%").Insert(args0Value.Length, "%")}"; return $"({left}) LIKE '%'||({args0Value})||'%'"; 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": var indexOfFindStr = getExp(exp.Arguments[0]); //if (exp.Arguments.Count > 1 && exp.Arguments[1].Type.FullName == "System.Int32") { // var locateArgs1 = getExp(exp.Arguments[1]); // if (long.TryParse(locateArgs1, out var testtrylng2)) locateArgs1 = (testtrylng2 + 1).ToString(); // else locateArgs1 += "+1"; // return $"(instr({left}, {indexOfFindStr}, {locateArgs1})-1)"; //} return $"(instr({left}, {indexOfFindStr})-1)"; case "PadLeft": if (exp.Arguments.Count == 1) return $"padl({left}, {getExp(exp.Arguments[0])})"; return $"leftstr(REPLACE(padl({left}, {getExp(exp.Arguments[0])}),' ',{getExp(exp.Arguments[1])}),{getExp(exp.Arguments[0])}-length({left}))||{left}"; case "PadRight": var totalWidthValue = getExp(exp.Arguments[0]); if (exp.Arguments.Count == 1) return $"padr({left}, {totalWidthValue})"; return $"{left}||rightstr(REPLACE(padr({left},{totalWidthValue}),' ',{getExp(exp.Arguments[1])}),CASE WHEN {totalWidthValue}-length({left})<=0 THEN 0 ELSE {totalWidthValue}-length({left})END)"; 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} = {getExp(exp.Arguments[0])})"; } } 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])})"; #if MicrosoftData case "Floor": { var funExp = getExp(exp.Arguments[0]); return $"cast({funExp} as int) - ({funExp} < cast({funExp} as int))"; }; case "Ceiling": { var funExp = getExp(exp.Arguments[0]); return $"cast ({funExp} as int ) + ({funExp} > cast ({funExp} as int ))"; }; #else case "Floor": return $"floor({getExp(exp.Arguments[0])})"; case "Ceiling": return $"ceiling({getExp(exp.Arguments[0])})"; #endif 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 $"power({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 $"truncate({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 $"(strftime('%s',{getExp(exp.Arguments[0])}) -strftime('%s',{getExp(exp.Arguments[1])}))"; case "DaysInMonth": return $"strftime('%d',date({getExp(exp.Arguments[0])}||'-01-01',{getExp(exp.Arguments[1])}||' months','-1 days'))"; 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]) ?? $"datetime({getExp(exp.Arguments[0])})"; case "ParseExact": case "TryParse": case "TryParseExact": return ExpressionConstDateTime(exp.Arguments[0]) ?? $"datetime({getExp(exp.Arguments[0])})"; } } else { var left = getExp(exp.Object); var args1 = exp.Arguments.Count == 0 ? null : getExp(exp.Arguments[0]); switch (exp.Method.Name) { case "Add": return $"datetime({left},({args1})||' seconds')"; case "AddDays": return $"datetime({left},({args1})||' days')"; case "AddHours": return $"datetime({left},({args1})||' hours')"; case "AddMilliseconds": return $"datetime({left},(({args1})/1000)||' seconds')"; case "AddMinutes": return $"datetime({left},({args1})||' minutes')"; case "AddMonths": return $"datetime({left},({args1})||' months')"; case "AddSeconds": return $"datetime({left},({args1})||' seconds')"; case "AddTicks": return $"datetime({left},(({args1})/10000000)||' seconds')"; case "AddYears": return $"datetime({left},({args1})||' years')"; case "Subtract": switch ((exp.Arguments[0].Type.IsNullableType() ? exp.Arguments[0].Type.GetGenericArguments().FirstOrDefault() : exp.Arguments[0].Type).FullName) { case "System.DateTime": return $"(strftime('%s',{left})-strftime('%s',{args1}))"; case "System.TimeSpan": return $"datetime({left},(({args1})*-1)||' seconds')"; } break; case "Equals": return $"({left} = {args1})"; case "CompareTo": return $"(strftime('%s',{left})-strftime('%s',{args1}))"; case "ToString": if (exp.Arguments.Count == 0) return $"strftime('%Y-%m-%d %H:%M:%f',{left})"; switch (args1) { case "'yyyy-MM-dd HH:mm:ss'": return $"strftime('%Y-%m-%d %H:%M:%S',{left})"; case "'yyyy-MM-dd HH:mm'": return $"strftime('%Y-%m-%d %H:%M',{left})"; case "'yyyy-MM-dd HH'": return $"strftime('%Y-%m-%d %H',{left})"; case "'yyyy-MM-dd'": return $"strftime('%Y-%m-%d',{left})"; case "'yyyy-MM'": return $"strftime('%Y-%m',{left})"; case "'yyyyMMddHHmmss'": return $"strftime('%Y%m%d%H%M%S',{left})"; case "'yyyyMMddHHmm'": return $"strftime('%Y%m%d%H%M',{left})"; case "'yyyyMMddHH'": return $"strftime('%Y%m%d%H',{left})"; case "'yyyyMMdd'": return $"strftime('%Y%m%d',{left})"; case "'yyyyMM'": return $"strftime('%Y%m',{left})"; case "'yyyy'": return $"strftime('%Y',{left})"; case "'HH:mm:ss'": return $"strftime('%H:%M:%S',{left})"; } args1 = Regex.Replace(args1, "(yyyy|MM|dd|HH|mm|ss)", m => { switch (m.Groups[1].Value) { case "yyyy": return $"%Y"; case "MM": return $"%_a1"; case "dd": return $"%_a2"; case "HH": return $"%_a3"; case "mm": return $"%_a4"; case "ss": return $"%S"; } return m.Groups[0].Value; }); var argsFinds = new[] { "%Y", "%_a1", "%_a2", "%_a3", "%_a4", "%S" }; var argsSpts = Regex.Split(args1, "(yy|M|d|H|hh|h|m|s|tt|t)"); for (var a = 0; a < argsSpts.Length; a++) { switch (argsSpts[a]) { case "yy": argsSpts[a] = $"substr(strftime('%Y',{left}),3,2)"; break; case "M": argsSpts[a] = $"ltrim(strftime('%m',{left}),'0')"; break; case "d": argsSpts[a] = $"ltrim(strftime('%d',{left}),'0')"; break; case "H": argsSpts[a] = $"case when substr(strftime('%H',{left}),1,1) = '0' then substr(strftime('%H',{left}),2,1) else strftime('%H',{left}) end"; break; case "hh": argsSpts[a] = $"case cast(case when substr(strftime('%H',{left}),1,1) = '0' then substr(strftime('%H',{left}),2,1) else strftime('%H',{left}) end as smallint) % 12 when 0 then '12' when 1 then '01' when 2 then '02' when 3 then '03' when 4 then '04' when 5 then '05' when 6 then '06' when 7 then '07' when 8 then '08' when 9 then '09' when 10 then '10' when 11 then '11' end"; break; case "h": argsSpts[a] = $"case cast(case when substr(strftime('%H',{left}),1,1) = '0' then substr(strftime('%H',{left}),2,1) else strftime('%H',{left}) end as smallint) % 12 when 0 then '12' when 1 then '1' when 2 then '2' when 3 then '3' when 4 then '4' when 5 then '5' when 6 then '6' when 7 then '7' when 8 then '8' when 9 then '9' when 10 then '10' when 11 then '11' end"; break; case "m": argsSpts[a] = $"case when substr(strftime('%M',{left}),1,1) = '0' then substr(strftime('%M',{left}),2,1) else strftime('%M',{left}) end"; break; case "s": argsSpts[a] = $"case when substr(strftime('%S',{left}),1,1) = '0' then substr(strftime('%S',{left}),2,1) else strftime('%S',{left}) end"; break; case "tt": argsSpts[a] = $"case when cast(case when substr(strftime('%H',{left}),1,1) = '0' then substr(strftime('%H',{left}),2,1) else strftime('%H',{left}) end as smallint) >= 12 then 'PM' else 'AM' end"; break; case "t": argsSpts[a] = $"case when cast(case when substr(strftime('%H',{left}),1,1) = '0' then substr(strftime('%H',{left}),2,1) else strftime('%H',{left}) end as smallint) >= 12 then 'P' else 'A' end"; 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)) ? $"strftime('{argsSptsA}',{left})" : $"'{argsSptsA}'"; break; } } if (argsSpts.Length > 0) args1 = $"({string.Join(" || ", argsSpts.Where(a => a != "''"))})"; return args1.Replace("%_a1", "%m").Replace("%_a2", "%d").Replace("%_a3", "%H").Replace("%_a4", "%M"); } } 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 character)"; } } 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 $"({getExp(exp.Arguments[0])} not in ('0','false'))"; case "ToByte": return $"cast({getExp(exp.Arguments[0])} as int2)"; case "ToChar": return $"substr(cast({getExp(exp.Arguments[0])} as character), 1, 1)"; case "ToDateTime": return ExpressionConstDateTime(exp.Arguments[0]) ?? $"datetime({getExp(exp.Arguments[0])})"; case "ToDecimal": return $"cast({getExp(exp.Arguments[0])} as decimal(36,18))"; case "ToDouble": return $"cast({getExp(exp.Arguments[0])} as double)"; case "ToInt16": case "ToInt32": case "ToInt64": case "ToSByte": return $"cast({getExp(exp.Arguments[0])} as smallint)"; case "ToSingle": return $"cast({getExp(exp.Arguments[0])} as float)"; case "ToString": return $"cast({getExp(exp.Arguments[0])} as character)"; case "ToUInt16": return $"cast({getExp(exp.Arguments[0])} as unsigned)"; case "ToUInt32": return $"cast({getExp(exp.Arguments[0])} as decimal(10,0))"; case "ToUInt64": return $"cast({getExp(exp.Arguments[0])} as decimal(21,0))"; } } return null; } } }