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- 优化 LIKE 表达式解析 #1870； - 移除 OdbcDameng/OdbcKingbaseES；

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2881099
2024-08-09 20:35:06 +08:00
parent 60b5ed56b8
commit 040f9bdabe
116 changed files with 162 additions and 25246 deletions
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11
Providers/FreeSql.Provider.MsAccess/MsAccessExpression.cs
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@ -246,18 +246,19 @@ namespace FreeSql.MsAccess
case "StartsWith":
case "EndsWith":
case "Contains":
var leftLike = exp.Object.NodeType == ExpressionType.MemberAccess ? left : $"({left})";
var args0Value = getExp(exp.Arguments[0]);
if (args0Value == "NULL") return $"({left}) IS NULL";
if (args0Value == "NULL") return $"{leftLike} IS NULL";
if (args0Value.Contains("%"))
{
if (exp.Method.Name == "StartsWith") return $"instr({left}, {args0Value}) = 1";
if (exp.Method.Name == "EndsWith") return $"instr({left}, {args0Value}) = len({left})-len({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}+'%')";
if (exp.Method.Name == "StartsWith") return $"{leftLike} LIKE {(args0Value.EndsWith("'") ? args0Value.Insert(args0Value.Length - 1, "%") : $"({args0Value}+'%')")}";
if (exp.Method.Name == "EndsWith") return $"{leftLike} LIKE {(args0Value.StartsWith("'") ? args0Value.Insert(1, "%") : $"('%'+{args0Value})")}";
if (args0Value.StartsWith("'") && args0Value.EndsWith("'")) return $"{leftLike} LIKE {args0Value.Insert(1, "%").Insert(args0Value.Length, "%")}";
return $"{leftLike} LIKE ('%'+{args0Value}+'%')";
case "ToLower": return $"lcase({left})";
case "ToUpper": return $"ucase({left})";
case "Substring":