选择 AS 在 interbase 中不工作

发布于 2024-10-18 02:02:54 字数 505 浏览 13 评论 0原文

可以

select payeeid, EXTRACT(WEEKDAY FROM checkdate) as DOW, 
(bankcleared - checkdate) as DateDiff  
from Master  
where (bankcleared is not null)  
order by payeeid, DOW, DateDiff

将 DateDiff 添加到 Where - 不起作用

select payeeid, EXTRACT(WEEKDAY FROM checkdate) as DOW, 
(bankcleared - checkdate) as DateDiff  
from Master  
where (bankcleared is not null)  AND (DateDiff >= 1)  
order by payeeid, DOW, DateDiff

原文

works

select payeeid, EXTRACT(WEEKDAY FROM checkdate) as DOW, 
(bankcleared - checkdate) as DateDiff  
from Master  
where (bankcleared is not null)  
order by payeeid, DOW, DateDiff

adding DateDiff to Where - does not work

select payeeid, EXTRACT(WEEKDAY FROM checkdate) as DOW, 
(bankcleared - checkdate) as DateDiff  
from Master  
where (bankcleared is not null)  AND (DateDiff >= 1)  
order by payeeid, DOW, DateDiff

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娇妻 2024-10-25 02:02:55

您只能在 GROUP BY、ORDER BY 或 HAVING 子句中使用列别名。

标准 SQL 不允许您在 WHERE 子句中引用列别名。施加此限制是因为当执行 WHERE 代码时，列值可能尚未确定。

试试这个

select payeeid, EXTRACT(WEEKDAY FROM checkdate) as DOW, 
(bankcleared - checkdate) as DateDiff
from Master
where (bankcleared is not null) AND ((bankcleared - checkdate)>= 1)
order by payeeid, DOW, DateDiff

有关更多信息，请浏览这些链接

可以你在mysql的WHERE子句中使用了别名吗？

Where子句中的未知列

You can only use column aliases in GROUP BY, ORDER BY, or HAVING clauses.

Standard SQL doesn't allow you to refer to a column alias in a WHERE clause. This restriction is imposed because when the WHERE code is executed, the column value may not yet be determined.

Try this

select payeeid, EXTRACT(WEEKDAY FROM checkdate) as DOW, 
(bankcleared - checkdate) as DateDiff
from Master
where (bankcleared is not null) AND ((bankcleared - checkdate)>= 1)
order by payeeid, DOW, DateDiff

For more info go through these links

Can you use an alias in the WHERE clause in mysql?

Unknown Column In Where Clause

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書生途 2024-10-25 02:02:55

select payeeid, 
       EXTRACT(WEEKDAY FROM checkdate) as DOW, 
       (bankcleared - checkdate) as DateDiff
from Master
WHERE (bankcleared is not null) 
AND   ((bankcleared - checkdate)>= 1)
Order by  payeeid, DOW, DateDiff

select payeeid, 
       EXTRACT(WEEKDAY FROM checkdate) as DOW, 
       (bankcleared - checkdate) as DateDiff
from Master
WHERE (bankcleared is not null) 
AND   ((bankcleared - checkdate)>= 1)
Order by  payeeid, DOW, DateDiff

回复收藏 0 原文

~没有更多了~