thevar1able/ClickHouse
1
0
Fork 0
mirror of https://github.com/ClickHouse/ClickHouse.git synced 2024-11-28 10:31:57 +00:00
Code Issues Packages Projects Releases Wiki Activity
477b8f04b6
ClickHouse/docs/zh/sql-reference/statements/exists.md
DanRoscigno 7f92006428 add slugs to all docs
2022-08-26 15:07:59 -04:00

401 B
Raw Blame History

slug sidebar_position sidebar_label
/zh/sql-reference/statements/exists 45 EXISTS

EXISTS 语句

EXISTS [TEMPORARY] [TABLE|DICTIONARY] [db.]name [INTO OUTFILE filename] [FORMAT format]

返回一个单独的 UInt8类型的列，如果表或数据库不存在，则包含一个值 0，如果表在指定的数据库中存在，则包含一个值 1。