sql = "Select * from product_series order by index desc,id a
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sql = "Select * from product_series order by index desc,id asc 我想写查询id小于等于7的序列,怎么改
![sql =](/uploads/image/z/14995185-33-5.jpg?t=sql+%3D+%22Select+%2A+from+product_series+order+by+index+desc%2Cid+a)
加个where 条件
Select * from product_series where id
Select * from product_series where id
sql = "Select * from product_series order by index desc,id a
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