我有以下查询:
SELECT
title,
(stock_one + stock_two) AS global_stock
FROM
product
ORDER BY
global_stock = 0,
title;
在 PostgreSQL 8.1.23 中运行它我收到此错误:
查询失败:错误:列“global_stock”不存在
任何人都可以帮助我让它发挥作用吗?我首先需要可用的项目,然后是不可用的项目。非常感谢!
你总是可以ORDER BY
这边走:
select
title,
( stock_one + stock_two ) as global_stock
from product
order by 2, 1
或将其包装在另一个 SELECT 中:
SELECT *
from
(
select
title,
( stock_one + stock_two ) as global_stock
from product
) x
order by (case when global_stock = 0 then 1 else 0 end) desc, title
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