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41 lines
1.3 KiB
Markdown
41 lines
1.3 KiB
Markdown
---
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machine_translated: true
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machine_translated_rev: 72537a2d527c63c07aa5d2361a8829f3895cf2bd
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toc_priority: 43
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toc_title: jdbc
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---
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# jdbc {#table-function-jdbc}
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`jdbc(datasource, schema, table)` -JDBCドライバ経由で接続されたテーブルを返します。
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このテーブル関数には、別々の [clickhouse-jdbc-bridge](https://github.com/ClickHouse/clickhouse-jdbc-bridge) 実行するプログラム。
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Null許容型をサポートします(照会されるリモートテーブルのDDLに基づきます)。
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**例**
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``` sql
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SELECT * FROM jdbc('jdbc:mysql://localhost:3306/?user=root&password=root', 'schema', 'table')
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```
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``` sql
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SELECT * FROM jdbc('mysql://localhost:3306/?user=root&password=root', 'select * from schema.table')
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```
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``` sql
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SELECT * FROM jdbc('mysql-dev?p1=233', 'num Int32', 'select toInt32OrZero(''{{p1}}'') as num')
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```
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``` sql
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SELECT *
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FROM jdbc('mysql-dev?p1=233', 'num Int32', 'select toInt32OrZero(''{{p1}}'') as num')
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```
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``` sql
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SELECT a.datasource AS server1, b.datasource AS server2, b.name AS db
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FROM jdbc('mysql-dev?datasource_column', 'show databases') a
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INNER JOIN jdbc('self?datasource_column', 'show databases') b ON a.Database = b.name
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```
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[元の記事](https://clickhouse.com/docs/en/query_language/table_functions/jdbc/) <!--hide-->
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