Question

这是我的查询，我想按百分比和随机顺序获取数据，我明白了错误：

关键字“ORDER”附近的语法不正确。

这里有什么问题？

string sql = @"SELECT * FROM 
 (
 select * from (
 SELECT TOP 100 PERCENT * FROM tbl_adv WHERE Stars = 7 and IsSpecial=true and Confirm='1' and show=true and ExpireDate >=@ExpireDate ORDER BY  NEWID()) a
UNION
select * from ( 
SELECT TOP 84 PERCENT * FROM tbl_adv WHERE Stars = 6 and IsSpecial=true and  Confirm='1' and show=true and ExpireDate  >=@ExpireDate ORDER BY  NewId()) b
UNION 
select * from ( 
SELECT TOP 72 PERCENT * FROM tbl_adv WHERE Stars = 5 and IsSpecial=true and Confirm='1' and show=true and ExpireDate  >=@ExpireDate ORDER BY  NewId()) c
UNION
select * from ( 
SELECT TOP 60 PERCENT * FROM tbl_adv WHERE Stars = 4 and IsSpecial=true and Confirm='1' and show=true and ExpireDate  >=@ExpireDate ORDER BY  NewId()) d
UNION
select * from ( 
SELECT TOP 48 PERCENT * FROM tbl_adv WHERE Stars = 3 and IsSpecial=true and Confirm='1' and show=true and ExpireDate  >=@ExpireDate ORDER BY  NewId()) e
UNION
select * from ( 
SELECT TOP 36 PERCENT * FROM tbl_adv WHERE Stars = 2 and IsSpecial=true and Confirm='1' and show=true and ExpireDate  >=@ExpireDate ORDER BY  NewId()) f
UNION
select * from ( 
SELECT TOP 24 PERCENT * FROM tbl_adv WHERE Stars = 1 and IsSpecial=true and Confirm='1' and show=true and ExpireDate  >=@ExpireDate ORDER BY  NewId()) g
UNION
select * from ( 
SELECT TOP 12 PERCENT * FROM tbl_adv WHERE Stars = 0 and IsSpecial=true and Confirm='1' and show=true and ExpireDate  >=@ExpireDate ORDER BY  NewId()) h
)
ORDER BY Stars DESC, UpdateDate DESC";

Answer 1

我认为你只需要给你的表别名。

string sql = @"SELECT * FROM 
 (
 select * from (
 SELECT TOP 100 PERCENT * FROM tbl_adv WHERE Stars = 7 and IsSpecial=true and Confirm='1' and show=true and ExpireDate >=@ExpireDate ORDER BY  NEWID()) a
UNION
select * from ( 
SELECT TOP 84 PERCENT * FROM tbl_adv WHERE Stars = 6 and IsSpecial=true and  Confirm='1' and show=true and ExpireDate  >=@ExpireDate ORDER BY  NewId()) b
UNION 
select * from ( 
SELECT TOP 72 PERCENT * FROM tbl_adv WHERE Stars = 5 and IsSpecial=true and Confirm='1' and show=true and ExpireDate  >=@ExpireDate ORDER BY  NewId()) c
UNION
select * from ( 
SELECT TOP 60 PERCENT * FROM tbl_adv WHERE Stars = 4 and IsSpecial=true and Confirm='1' and show=true and ExpireDate  >=@ExpireDate ORDER BY  NewId()) d
UNION
select * from ( 
SELECT TOP 48 PERCENT * FROM tbl_adv WHERE Stars = 3 and IsSpecial=true and Confirm='1' and show=true and ExpireDate  >=@ExpireDate ORDER BY  NewId()) e
UNION
select * from ( 
SELECT TOP 36 PERCENT * FROM tbl_adv WHERE Stars = 2 and IsSpecial=true and Confirm='1' and show=true and ExpireDate  >=@ExpireDate ORDER BY  NewId()) f
UNION
select * from ( 
SELECT TOP 24 PERCENT * FROM tbl_adv WHERE Stars = 1 and IsSpecial=true and Confirm='1' and show=true and ExpireDate  >=@ExpireDate ORDER BY  NewId()) g
UNION
select * from ( 
SELECT TOP 12 PERCENT * FROM tbl_adv WHERE Stars = 0 and IsSpecial=true and Confirm='1' and show=true and ExpireDate  >=@ExpireDate ORDER BY  NewId()) h
) Results
ORDER BY Results.Stars DESC, Results.UpdateDate DESC";

Answer 2

为您订购的SELECT定义表别名。所以只需在ORDER BY子句之前添加一个表名。

'ORDER'附近的语法不正确

2 个答案: