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新增SqlServer下对string.Compare和string.CompareTo方法的转译支持 #2087

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新增SqlServer下对string.Compare和string.CompareTo方法的转译支持 #2087

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47 changes: 33 additions & 14 deletions Providers/FreeSql.Provider.SqlServer/SqlServerExpression.cs
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Original file line number Diff line number Diff line change
@@ -1,10 +1,10 @@
using FreeSql.Internal;
using System;
using System;
using System.Collections;
using System.Linq;
using System.Linq.Expressions;
using System.Text;
using System.Text.RegularExpressions;
using FreeSql.Internal;

namespace FreeSql.SqlServer
{
Expand Down Expand Up @@ -40,8 +40,9 @@ public override string ExpressionLambdaToSqlOther(Expression exp, ExpTSC tsc)
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 decimal(14,7))";
case "System.String": return gentype == typeof(Guid) ?
$"cast({getExp(operandExp)} as varchar(36))" :
case "System.String":
return gentype == typeof(Guid) ?
$"cast({getExp(operandExp)} as varchar(36))" :
$"cast({getExp(operandExp)} as nvarchar{(gentype.IsNumberType() || gentype.IsEnum ? "(100)" : "(max)")})";
case "System.UInt16": return $"cast({getExp(operandExp)} as smallint)";
case "System.UInt32": return $"cast({getExp(operandExp)} as int)";
Expand Down Expand Up @@ -102,10 +103,10 @@ public override string ExpressionLambdaToSqlOther(Expression exp, ExpTSC tsc)
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 ? (gentype2 == typeof(Guid) ?
}
var value = ExpressionGetValue(callExp.Object, out var success);
if (success) return formatSql(value, typeof(string), null, null);
return callExp.Arguments.Count == 0 ? (gentype2 == typeof(Guid) ?
$"cast({getExp(callExp.Object)} as varchar(36))" :
$"cast({getExp(callExp.Object)} as nvarchar{(gentype2.IsNumberType() || gentype2.IsEnum ? "(100)" : "(max)")})") : null;
}
Expand Down Expand Up @@ -262,7 +263,7 @@ public override string ExpressionLambdaToSqlCallString(MethodCallExpression exp,
return _common.StringConcat(concatNewArrExp.Expressions.Select(a => getExp(a)).ToArray(), concatNewArrExp.Expressions.Select(a => a.Type).ToArray());
return _common.StringConcat(exp.Arguments.Select(a => getExp(a)).ToArray(), exp.Arguments.Select(a => a.Type).ToArray());
case "Format":
if (exp.Arguments[0].NodeType != ExpressionType.Constant) throw new Exception(CoreErrorStrings.Not_Implemented_Expression_ParameterUseConstant(exp,exp.Arguments[0]));
if (exp.Arguments[0].NodeType != ExpressionType.Constant) throw new Exception(CoreErrorStrings.Not_Implemented_Expression_ParameterUseConstant(exp, exp.Arguments[0]));
var expArgs0 = ExpressionLambdaToSql(exp.Arguments[0], tsc);
if (exp.Arguments.Count == 1) return expArgs0;
var nchar = expArgs0.StartsWith("N'") ? "N" : "";
Expand Down Expand Up @@ -297,6 +298,15 @@ public override string ExpressionLambdaToSqlCallString(MethodCallExpression exp,
}
}
break;
case nameof(string.Compare):
{
if (exp.Arguments.Count != 2)
throw new Exception(CoreErrorStrings.Not_Implemented_Expression(exp));

var left = getExp(exp.Arguments[0]);
var right = getExp(exp.Arguments[1]);
return $"(case when {left} = {right} then 0 when {left} > {right} then 1 else -1 end)";
}
}
}
else
Expand Down Expand Up @@ -349,7 +359,14 @@ public override string ExpressionLambdaToSqlCallString(MethodCallExpression exp,
case "TrimStart": return $"ltrim({left})";
case "TrimEnd": return $"rtrim({left})";
case "Replace": return $"replace({left}, {getExp(exp.Arguments[0])}, {getExp(exp.Arguments[1])})";
case "CompareTo": return $"({left} - {getExp(exp.Arguments[0])})";
case nameof(string.CompareTo):
{
if (exp.Arguments.Count != 1)
throw new Exception(CoreErrorStrings.Not_Implemented_Expression(exp));

var right = getExp(exp.Arguments[0]);
return $"(case when {left} = {right} then 0 when {left} > {right} then 1 else -1 end)";
}
case "Equals": return $"({left} = {getExp(exp.Arguments[0])})";
}
}
Expand Down Expand Up @@ -469,9 +486,11 @@ public override string ExpressionLambdaToSqlCallDateTime(MethodCallExpression ex
case "d": return $"' + case when substring(convert(char(6), {left}, 12), 5, 1) = '0' then substring(convert(char(6), {left}, 12), 6, 1) else substring(convert(char(6), {left}, 12), 5, 2) end + {nchar}'";
case "HH": return $"' + substring(convert(char(8), {left}, 24), 1, 2) + {nchar}'";
case "H": return $"' + case when substring(convert(char(8), {left}, 24), 1, 1) = '0' then substring(convert(char(8), {left}, 24), 2, 1) else substring(convert(char(8), {left}, 24), 1, 2) end + {nchar}'";
case "hh": return $"' + case cast(case when substring(convert(char(8), {left}, 24), 1, 1) = '0' then substring(convert(char(8), {left}, 24), 2, 1) else substring(convert(char(8), {left}, 24), 1, 2) end as int) % 12" +
case "hh":
return $"' + case cast(case when substring(convert(char(8), {left}, 24), 1, 1) = '0' then substring(convert(char(8), {left}, 24), 2, 1) else substring(convert(char(8), {left}, 24), 1, 2) end as int) % 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 + {nchar}'";
case "h": return $"' + case cast(case when substring(convert(char(8), {left}, 24), 1, 1) = '0' then substring(convert(char(8), {left}, 24), 2, 1) else substring(convert(char(8), {left}, 24), 1, 2) end as int) % 12" +
case "h":
return $"' + case cast(case when substring(convert(char(8), {left}, 24), 1, 1) = '0' then substring(convert(char(8), {left}, 24), 2, 1) else substring(convert(char(8), {left}, 24), 1, 2) end as int) % 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 + {nchar}'";
case "mm": return $"' + substring(convert(char(8), {left}, 24), 4, 2) + {nchar}'";
case "m": return $"' + case when substring(convert(char(8), {left}, 24), 4, 1) = '0' then substring(convert(char(8), {left}, 24), 5, 1) else substring(convert(char(8), {left}, 24), 4, 2) end + {nchar}'";
Expand Down Expand Up @@ -507,8 +526,8 @@ public override string ExpressionLambdaToSqlCallConvert(MethodCallExpression exp
case "ToSingle": return $"cast({getExp(exp.Arguments[0])} as decimal(14,7))";
case "ToString":
var gentype = exp.Arguments[0].Type.NullableTypeOrThis();
return gentype == typeof(Guid) ?
$"cast({getExp(exp.Arguments[0])} as varchar(36))" :
return gentype == typeof(Guid) ?
$"cast({getExp(exp.Arguments[0])} as varchar(36))" :
$"cast({getExp(exp.Arguments[0])} as nvarchar{(gentype.IsNumberType() || gentype.IsEnum ? "(100)" : "(max)")})";
case "ToUInt16": return $"cast({getExp(exp.Arguments[0])} as smallint)";
case "ToUInt32": return $"cast({getExp(exp.Arguments[0])} as int)";
Expand Down