diff --git a/嵌套查询.md b/嵌套查询.md index 5ead1ce..5de8ca8 100644 --- a/嵌套查询.md +++ b/嵌套查询.md @@ -16,6 +16,8 @@ fsql.Select() .ToList(); ``` +> 提示:支持多表嵌套查询,fsql.Select\() + ```sql SELECT * FROM ( @@ -26,38 +28,11 @@ FROM ( WHERE (a.[rownum] = 1) ``` -场景2:多表查询嵌套 - -```c# -fsql.Select() - .InnerJoin((a, b) => a.GroupId == b.Id) - .Where((a, b) => b.GroupName == "group1") - .WithTempQuery((a, b) => new - { - User = a, - GroupName = b.GroupName, - rownum = SqlExt.RowNumber().Over().PartitionBy(b.GroupName).OrderBy(a.Id).ToValue() - }) - .Where(a => a.rownum == 1) - .ToList(); -``` - -```sql -SELECT * -FROM ( - SELECT a.[Id], a.[Nickname], b.[GroupName], row_number() over( partition by b.[GroupName] order by a.[Id]) [rownum] - FROM [User1] a - INNER JOIN [UserGroup] b ON a.[GroupId] = b.[Id] - WHERE (b.[GroupName] = 'group1') - ) a -WHERE (a.[rownum] = 1) -``` - -场景3:分组查询嵌套 +场景2:分组查询嵌套 待补充.. -场景4:嵌套查询 + Join +场景3:嵌套查询 + Join 待补充..