using FreeSql.Internal; using FreeSql.Internal.Model; using System; using System.Collections; using System.Collections.Generic; using System.Linq; using System.Linq.Expressions; using System.Reflection; using System.Text; using System.Text.RegularExpressions; namespace FreeSql.ClickHouse { class ClickHouseExpression : CommonExpression { public ClickHouseExpression(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 (gentype.ToString()) { case "System.Boolean": return $"({getExp(operandExp)} not in ('0','false'))"; case "System.Byte": return $"cast({getExp(operandExp)} as Int8)"; case "System.Char": return $"substr(cast({getExp(operandExp)} as String), 1, 1)"; case "System.DateTime": return ExpressionConstDateTime(operandExp) ?? $"cast({getExp(operandExp)} as DateTime)"; case "System.Decimal": return $"cast({getExp(operandExp)} as Decimal128(19))"; case "System.Double": return $"cast({getExp(operandExp)} as Float64)"; case "System.Int16": return $"cast({getExp(operandExp)} as Int16)"; case "System.Int32": return $"cast({getExp(operandExp)} as Int32)"; case "System.Int64": return $"cast({getExp(operandExp)} as Int64)"; case "System.SByte": return $"cast({getExp(operandExp)} as UInt8)"; case "System.Single": return $"cast({getExp(operandExp)} as Float32)"; case "System.String": return $"cast({getExp(operandExp)} as String)"; case "System.UInt16": return $"cast({getExp(operandExp)} as UInt16)"; case "System.UInt32": return $"cast({getExp(operandExp)} as UInt32)"; case "System.UInt64": return $"cast({getExp(operandExp)} as UInt64)"; case "System.Guid": return $"substr(cast({getExp(operandExp)} as String), 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 Int8)"; case "System.Char": return $"substr(cast({getExp(callExp.Arguments[0])} as String), 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 Decimal128(19))"; case "System.Double": return $"cast({getExp(callExp.Arguments[0])} as Float64)"; case "System.Int16": return $"cast({getExp(callExp.Arguments[0])} as Int16)"; case "System.Int32": return $"cast({getExp(callExp.Arguments[0])} as Int32)"; case "System.Int64": return $"cast({getExp(callExp.Arguments[0])} as Int64)"; case "System.SByte": return $"cast({getExp(callExp.Arguments[0])} as UInt8)"; case "System.Single": return $"cast({getExp(callExp.Arguments[0])} as Float32)"; case "System.UInt16": return $"cast({getExp(callExp.Arguments[0])} as UInt16)"; case "System.UInt32": return $"cast({getExp(callExp.Arguments[0])} as UInt32)"; case "System.UInt64": return $"cast({getExp(callExp.Arguments[0])} as UInt64)"; case "System.Guid": return $"substr(cast({getExp(callExp.Arguments[0])} as String), 1, 36)"; } return null; case "NewGuid": return null; case "Next": if (callExp.Object?.Type == typeof(Random)) return "cast(rand()*1000000000 as Int64)"; return null; case "NextDouble": if (callExp.Object?.Type == typeof(Random)) return "rand()"; return null; case "Random": if (callExp.Method.DeclaringType.IsNumberType()) return "rand()"; 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 String)" : 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 "Count": left = objExp == null ? null : getExp(objExp); if (left.StartsWith("(") || left.EndsWith(")")) left = $"array[{left.TrimStart('(').TrimEnd(')')}]"; return $"(case when {left} is null then 0 else length({left}) end)"; case "Any": left = objExp == null ? null : getExp(objExp); if (left.StartsWith("(") || left.EndsWith(")")) left = $"array[{left.TrimStart('(').TrimEnd(')')}]"; return $"(case when {left} is null then 0 else length({left}) end > 0)"; case "Contains": 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; left = objExp == null ? null : getExp(objExp); tsc.isNotSetMapColumnTmp = false; tsc.SetMapColumnTmp(null).SetMapTypeReturnOld(oldMapType); if (oldDbParams != null) tsc.SetDbParamsReturnOld(oldDbParams); //判断 in 或 hasAny if (left.StartsWith("array[") && left.EndsWith("]")) return $"({args1}) in ({left.Substring(6, left.Length - 7)})"; if (left.StartsWith("(") && left.EndsWith(")")) //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 (")})"; if (args1.StartsWith("(") && args1.EndsWith(")")) args1 = $"[{args1.TrimStart('(').TrimEnd(')')}]"; else args1 = $"[{args1}]"; return $"(hasAny({left}, {args1}))"; case "Concat": left = objExp == null ? null : getExp(objExp); if (left.StartsWith("(") || left.EndsWith(")")) left = $"array[{left.TrimStart('(').TrimEnd(')')}]"; var right2 = getExp(callExp.Arguments[argIndex]); if (right2.StartsWith("(") || right2.EndsWith(")")) right2 = $"array[{right2.TrimStart('(').TrimEnd(')')}]"; return $"(arrayConcat({left} || {right2}))"; } } 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 $"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 "curdate()"; case "MinValue": return "cast('0001/1/1 0:00:00' as DateTime)"; case "MaxValue": return "cast('9999/12/31 23:59:59' as DateTime)"; } return null; } var left = ExpressionLambdaToSql(exp.Expression, tsc); if ((exp.Expression as MemberExpression)?.Expression.NodeType == ExpressionType.Constant) left = $"toDateTime({left})"; //IsDate(left); switch (exp.Member.Name) { case "Date": return $"toDate({left})"; case "TimeOfDay": return $"dateDiff(second, toDate({left}), toDateTime({left}))*1000000"; case "DayOfWeek": return $"(toDayOfWeek({left})-1)"; case "Day": return $"toDayOfMonth({left})"; case "DayOfYear": return $"toDayOfYear({left})"; case "Month": return $"toMonth({left})"; case "Year": return $"toYear({left})"; case "Hour": return $"toHour({left})"; case "Minute": return $"toMinute({left})"; case "Second": return $"toSecond({left})"; case "Millisecond": return $"(toSecond({left})/1000)"; case "Ticks": return $"(dateDiff(second, toDate('0001-1-1'), toDateTime({left}))*10000000+621355968000000000)"; } return null; } public bool IsInt(string _string) { if (string.IsNullOrEmpty(_string)) return false; int i = 0; return int.TryParse(_string, out i); } public bool IsDate(string date) { if (string.IsNullOrEmpty(date)) return true; return DateTime.TryParse(date, out var time); } 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 $"intDiv(({left})/{60 * 60 * 24})"; case "Hours": return $"intDiv(({left})/{60 * 60}%24)"; case "Milliseconds": return $"(cast({left} as Int64)*1000)"; case "Minutes": return $"intDiv(({left})/60%60)"; case "Seconds": return $"(({left})%60)"; case "Ticks": return $"(intDiv({left} as Int64)*10000000)"; case "TotalDays": return $"(({left})/{60 * 60 * 24})"; case "TotalHours": return $"(({left})/{60 * 60})"; case "TotalMilliseconds": return $"(cast({left} as Int64)*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])); if (exp.Arguments.Count == 1) return ExpressionLambdaToSql(exp.Arguments[0], tsc); 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 $"concat({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("StringJoinClickHouseGroupConcat"), 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 (exp.Method.Name == "StartsWith") return $"positionCaseInsensitive({left}, {args0Value}) = 1"; if (exp.Method.Name == "EndsWith") return $"({left}) LIKE {(args0Value.StartsWith("'") ? args0Value.Insert(1, "%") : $"concat('%', {args0Value})")}"; return $"positionCaseInsensitive({left}, {args0Value}) > 0"; 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 $"(locate({indexOfFindStr}, {left}, {locateArgs1})-1)"; } return $"(locate({indexOfFindStr}, {left})-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})"; } 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) { if (exp.Method.Name == "Trim") left = $"trim({getExp(argsTrim01)} from {left})"; if (exp.Method.Name == "TrimStart") left = $"trim(leading {getExp(argsTrim01)} from {left})"; if (exp.Method.Name == "TrimEnd") left = $"trim(trailing {getExp(argsTrim01)} from {left})"; } } return left; case "Replace": return $"replace({left}, {getExp(exp.Arguments[0])}, {getExp(exp.Arguments[1])})"; case "CompareTo": return $"strcmp({left}, {getExp(exp.Arguments[0])})"; 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])})"; 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 $"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 $"({getExp(exp.Arguments[0])} - ({getExp(exp.Arguments[1])}))"; case "DaysInMonth": return $"toDayOfMonth(subtractDays(addMonths(toStartOfMonth(concat({getExp(exp.Arguments[0])}, '-', {getExp(exp.Arguments[1])}, '-01')), 1), 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 $"addSeconds(toDateTime({left}), {args1})"; case "AddDays": return $"addDays(toDateTime({left}), {args1})"; case "AddHours": return $"addHours(toDateTime({left}), {args1})"; case "AddMilliseconds": return $"addSeconds(toDateTime({left}), {args1}/1000)"; case "AddMinutes": return $"addMinutes(toDateTime({left}),{args1})"; case "AddMonths": return $"addMonths(toDateTime({left}),{args1})"; case "AddSeconds": return $"addSeconds(toDateTime({left}),{args1})"; case "AddTicks": return $"addSeconds(toDateTime({left}), {args1}/10000000)"; case "AddYears": return $"addYears(toDateTime({left}),{args1})"; 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}, toDateTime({left}))"; case "System.TimeSpan": return $"addSeconds(toDateTime({left}),(({args1})*-1))"; } break; case "Equals": return $"({left} = {args1})"; case "CompareTo": return $"dateDiff(second,{args1},toDateTime({left}))"; case "ToString": if (exp.Arguments.Count == 0) return $"date_format({left},'%Y-%m-%d %H:%M:%S.%f')"; switch (args1) { case "'yyyy-MM-dd HH:mm:ss'": return $"formatDateTime(toDateTime({left}),'%Y-%m-%d %H:%M:%S')"; case "'yyyy-MM-dd HH:mm'": return $"formatDateTime(toDateTime({left}),'%Y-%m-%d %H:%M')"; case "'yyyy-MM-dd HH'": return $"formatDateTime(toDateTime({left}),'%Y-%m-%d %H')"; case "'yyyy-MM-dd'": return $"formatDateTime(toDateTime({left}),'%Y-%m-%d')"; case "'yyyy-MM'": return $"formatDateTime(toDateTime({left}),'%Y-%m')"; case "'yyyyMMddHHmmss'": return $"formatDateTime(toDateTime({left}),'%Y%m%d%H%M%S')"; case "'yyyyMMddHHmm'": return $"formatDateTime(toDateTime({left}),'%Y%m%d%H%M')"; case "'yyyyMMddHH'": return $"formatDateTime(toDateTime({left}),'%Y%m%d%H')"; case "'yyyyMMdd'": return $"formatDateTime(toDateTime({left}),'%Y%m%d')"; case "'yyyyMM'": return $"formatDateTime(toDateTime({left}),'%Y%m')"; case "'yyyy'": return $"formatDateTime(toDateTime({left}),'%Y')"; case "'HH:mm:ss'": return $"formatDateTime(toDateTime({left}),'%H:%M:%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", "%M", "%_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(formatDateTime(toDateTime({left}),'%M'),1,1) = '0' then substr(formatDateTime(toDateTime({left}),'%M'),2,1) else formatDateTime(toDateTime({left}),'%M') end"; break; case "s": argsSpts[a] = $"case when substr(formatDateTime(toDateTime({left}),'%S'),1,1) = '0' then substr(formatDateTime(toDateTime({left}),'%S'),2,1) else formatDateTime(toDateTime({left}),'%S') end"; break; case "t": argsSpts[a] = $"trim(trailing 'M' from formatDateTime(toDateTime({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)) ? $"formatDateTime(toDateTime({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])})*{(long)1000000 * 60 * 60 * 24})"; case "FromHours": return $"(({getExp(exp.Arguments[0])})*{(long)1000000 * 60 * 60})"; case "FromMilliseconds": return $"(({getExp(exp.Arguments[0])})*1000)"; case "FromMinutes": return $"(({getExp(exp.Arguments[0])})*{(long)1000000 * 60})"; case "FromSeconds": return $"(({getExp(exp.Arguments[0])})*1000000)"; case "FromTicks": return $"(({getExp(exp.Arguments[0])})/10)"; case "Parse": return $"cast({getExp(exp.Arguments[0])} as Int64)"; case "ParseExact": case "TryParse": case "TryParseExact": return $"cast({getExp(exp.Arguments[0])} as Int64)"; } } 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 String)"; } } 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 Int8)"; case "ToChar": return $"substr(cast({getExp(exp.Arguments[0])} as String), 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 Decimal128(19))"; case "ToDouble": return $"cast({getExp(exp.Arguments[0])} as Float64)"; case "ToInt16": return $"cast({getExp(exp.Arguments[0])} as Int16)"; case "ToInt32": return $"cast({getExp(exp.Arguments[0])} as Int32)"; case "ToInt64": return $"cast({getExp(exp.Arguments[0])} as Int64)"; case "ToSByte": return $"cast({getExp(exp.Arguments[0])} as UInt8)"; case "ToSingle": return $"cast({getExp(exp.Arguments[0])} as Float32)"; case "ToString": return $"cast({getExp(exp.Arguments[0])} as String)"; case "ToUInt16": return $"cast({getExp(exp.Arguments[0])} as UInt16)"; case "ToUInt32": return $"cast({getExp(exp.Arguments[0])} as UInt32)"; case "ToUInt64": return $"cast({getExp(exp.Arguments[0])} as UInt64)"; } } return null; } } }