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ClickHouse/docs/zh/sql-reference/statements/exists.md
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/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。