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update

28810
2020-08-08 15:56:17 +08:00
parent 9243a82fd6
commit e859addc16
1 changed files with 6 additions and 4 deletions
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10
多表查询.md

@@ -114,10 +114,12 @@ fsql.Select<Topic>()
```csharp
fsql.Select<Topic>()
.Where(a => string.Join(",", fsql.Select<StringJoin01>().ToList(b => b.Id))
.ToList();
//SELECT (SELECT group_concat(b.`name` separator ',')
// FROM `StringJoin01` b) as1
.ToList(a => new {
id = a.Id,
concat = string.Join(",", fsql.Select<StringJoin01>().ToList(b => b.Id))
});
//SELECT a.`Id`, (SELECT group_concat(b.`name` separator ',')
// FROM `StringJoin01` b)
//FROM `Topic` a
```