我可以单独运行查询,它工作得很好,但是如果我使用UNION或UNIONALL,它就会抛出错误。此错误输出:(警告: pg_query():查询失败:错误:列"Field1“不存在...ORDER BY CASE "Field1“W...)ALL"Field3" AS field_3, "Field4" AS
By Name;
查询运行良好,但是当我添加了一个UNION时,如下所示: xmlagg(xmlelement( "Species",xmlforest(case when Tail is not null then Tail else null end "Trait"))) xmlagg(xmlelement( "Species",
在大多数情况下,我可以通过ORDER BY CASE WHEN myCol is null then 0 else 1 end DESC, myCol ASC很好地完成这项工作 但是我遇到了一种特定的场景请考虑以下内容: Select 'b' as wordselect null as wordselect 'a' as word
ORDER BY如果我应用下面的逻辑,我会得到一个错误: Se
SELECT ID,Bill_typeID,Cust_ID,Name,Reg_date,Account_Number,Amount,status FROM Cust_Bill_Reg_M_Tbl SELECT ID,Bill_typeID,Cust_ID,Name,Reg_date,Account_Number,Amount,status FROM Rail_Ticket_Booking_M_Tbl)我得到了这个错误。Ms
下面是我的查询示例:Select Top 5 JobID From Jobs Where JobTypeID = 1 Order By JobID DESCSelect Top 5 JobID From Jobs Where JobTypeID = 2 Order By JobID DESCSelect Top 5 JobIDFrom Jobs Where JobTypeID = 3 Order
ORDER BY data DESC LIMIT 540)(SELECT tre, ruota, data FROM table WHERE ruota = 'BA'ORDER BY data DESC LIMIT 540) (SELECT quattro, ruota, data FROM table WHERE ruota = 'BA'ORDER BY data DESC LIM