[英]Alias a POSTGRES select statement
我想在查詢中創建新表,並在最后使用它們進行最終查詢。 我不記得語法是什么,在任何地方都找不到。 (這是一個基本示例,僅用於說明)。
phones as
(
SELECT phone_number from customers
)
emails as
(
SELECT emails from customers
)
// do something with both
您正在尋找CTE's
With phones as
(
SELECT phone_number from customers
)
,emails as
(
SELECT emails from customers
)
select * from phones--/emails
您正在尋找通用表表達式(CTE)。 這些使用介紹with
:
with phones as (
SELECT phone_number from customers
),
emails as (
SELECT emails from customers
)
select . . .;
您的示例選擇似乎並不特別有用,但我認為它們僅用於說明。
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