SQL where 条件始终为真
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时间：2020-09-01 13:32:15 来源:igfitidea点击:
SQL where condition always true
提问by Mr. Ghiandino
How to set in SQL a where condition that is always true?
如何在 SQL 中设置始终为真的 where 条件？
As far as I know: where 1=1, are there other ways too?
据我所知：where 1=1还有其他方法吗？
回答by Nonym
Are you, by chance, talking about collapseconditions, where a grouped condition is always TRUEor FALSE?
您是否偶然在谈论collapse条件，其中分组条件始终为TRUE或FALSE？
WHERE TRUE
WHERE 1
WHERE <string value> = <the same string value>
WHERE <numeric value> = <the same numeric value>
WHERE <hardcoded formula> = <the same hardcoded formula or one that produces the same value>
WHERE NULL IS NULL
