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- 修复 ToList表达式查询赋值string.Empty后产生错误的SQL

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28810
2019-07-25 10:11:50 +08:00
parent 96c7ef3845
commit 762bd0df2b
2 changed files with 44 additions and 8 deletions
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8
FreeSql/Internal/CommonExpression.cs
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@ -44,7 +44,13 @@ namespace FreeSql.Internal
// ccc = "now()",
// partby = "sum(num) over(PARTITION BY server_id,os,rid,chn order by id desc)"
//})，有缺点即 ccc partby 接受类型都是 string，可配合 Convert.ToXxx 类型转换，请看下面的兼容
parent.DbField = constExp.Type.FullName == "System.String" ? (constExp.Value?.ToString() ?? "NULL") : _common.FormatSql("{0}", constExp?.Value);
if (constExp.Type.FullName == "System.String")
{
var constExpValue = constExp.Value?.ToString() ?? "NULL";
if (constExpValue == string.Empty) constExpValue = _common.FormatSql("{0}", "");
parent.DbField = constExpValue;
} else
parent.DbField = _common.FormatSql("{0}", constExp?.Value);
field.Append(", ").Append(parent.DbField);
if (index >= 0) field.Append(" as").Append(++index);
return false;