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[英]How to store SQL query result into variable to include in a later SELECT statement
[英]How to store a result of SQL as an variable and use it in the later SQL commands in PostgreSQL
我正在尝试赶上本月的第一天:
select date_trunc('month', (CURRENT_DATE - INTERVAL '1 day')::date)
并打算在后续的SQL命令中将其用作变量start_date,例如:
select * from table where create_time > start_date;
如何在PostgreSQL中实现呢? 谢谢!
with start_date as (
select date_trunc('month', current_date) as start_date
)
select *
from
t
cross join
start_date
where create_time >= start_date
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