mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-09-30 05:30:51 +00:00
41 lines
1.3 KiB
Markdown
41 lines
1.3 KiB
Markdown
---
|
|
machine_translated: true
|
|
machine_translated_rev: 72537a2d527c63c07aa5d2361a8829f3895cf2bd
|
|
toc_priority: 43
|
|
toc_title: jdbc
|
|
---
|
|
|
|
# jdbc {#table-function-jdbc}
|
|
|
|
`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。
|
|
|
|
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。
|
|
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)。
|
|
|
|
**例**
|
|
|
|
``` sql
|
|
SELECT * FROM jdbc('jdbc:mysql://localhost:3306/?user=root&password=root', 'schema', 'table')
|
|
```
|
|
|
|
``` sql
|
|
SELECT * FROM jdbc('mysql://localhost:3306/?user=root&password=root', 'select * from schema.table')
|
|
```
|
|
|
|
``` sql
|
|
SELECT * FROM jdbc('mysql-dev?p1=233', 'num Int32', 'select toInt32OrZero(''{{p1}}'') as num')
|
|
```
|
|
|
|
``` sql
|
|
SELECT *
|
|
FROM jdbc('mysql-dev?p1=233', 'num Int32', 'select toInt32OrZero(''{{p1}}'') as num')
|
|
```
|
|
|
|
``` sql
|
|
SELECT a.datasource AS server1, b.datasource AS server2, b.name AS db
|
|
FROM jdbc('mysql-dev?datasource_column', 'show databases') a
|
|
INNER JOIN jdbc('self?datasource_column', 'show databases') b ON a.Database = b.name
|
|
```
|
|
|
|
[元の記事](https://clickhouse.tech/docs/en/query_language/table_functions/jdbc/) <!--hide-->
|