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Update exp to sql (Optimization of +)

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sunkaixuan 2022-09-02 20:16:34 +08:00
parent 47f308ae6e
commit 9938bec957
1 changed files with 28 additions and 1 deletions
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29
Src/Asp.Net/SqlSugar/ExpressionsToSql/ResolveItems/BinaryExpressionResolve.cs
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@ -33,12 +33,34 @@ namespace SqlSugar
{ {
SubGroup(expression, operatorValue); SubGroup(expression, operatorValue);
} }
else if (IsJoinString(expression, operatorValue))
{
JoinString(parameter, expression);
}
else else
{ {
DefaultBinary(parameter, expression, operatorValue); DefaultBinary(parameter, expression, operatorValue);
} }
} }
private void JoinString(ExpressionParameter parameter, BinaryExpression expression)
{
var leftString = GetNewExpressionValue(expression.Left);
var RightString = GetNewExpressionValue(expression.Right);
var joinString = this.Context.DbMehtods.MergeString(leftString, RightString);
if (this.Context.Result.Contains(ExpressionConst.FormatSymbol))
{
base.Context.Result.Replace("{0}", $" {joinString} ");
base.Context.Result.Append(" " + ExpressionConst.ExpressionReplace + parameter.BaseParameter.Index + " ");
}
else
{
base.Context.Result.Append($" {joinString} ");
}
}
private void DefaultBinary(ExpressionParameter parameter, BinaryExpression expression, string operatorValue) private void DefaultBinary(ExpressionParameter parameter, BinaryExpression expression, string operatorValue)
{ {
var isEqual = expression.NodeType == ExpressionType.Equal; var isEqual = expression.NodeType == ExpressionType.Equal;
@ -232,7 +254,12 @@ namespace SqlSugar
} }
return true; return true;
} }
private static bool IsJoinString(BinaryExpression expression, string operatorValue)
{
return operatorValue == "+"
&& expression.Right.Type == UtilConstants.StringType
&& expression.Left.Type==UtilConstants.StringType;
}
private static bool RightIsHasValue(Expression leftExpression, Expression rightExpression,bool isLogic) private static bool RightIsHasValue(Expression leftExpression, Expression rightExpression,bool isLogic)
{ {
return isLogic&& return isLogic&&