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

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

# EXISTS 语句 {#exists-statement}

``` sql
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`。
Fixed zh...statements/exists: reimport file 2022-01-29 08:36:03 +00:00			`---`
add slugs to all docs 2022-08-26 19:07:59 +00:00			`slug: /zh/sql-reference/statements/exists`
Added /zh docs 2022-04-10 23:08:18 +00:00			`sidebar_position: 45`
			`sidebar_label: EXISTS`
Fixed zh...statements/exists: reimport file 2022-01-29 08:36:03 +00:00			`---`

Fixed zh...statements/exists: translate to zh 2022-01-29 08:37:45 +00:00			`# EXISTS 语句 {#exists-statement}`
Fixed zh...statements/exists: reimport file 2022-01-29 08:36:03 +00:00
			``` sql
			`EXISTS [TEMPORARY] [TABLE\|DICTIONARY] [db.]name [INTO OUTFILE filename] [FORMAT format]`
			```

Fixed zh...statements/exists: translate to zh 2022-01-29 08:37:45 +00:00			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`。