JDBC

JDBC source connector

Description

Read external data source data through JDBC.

Key features

• batch
• stream
• exactly-once
• schema projection

supports query SQL and can achieve projection effect.

• parallelism
• support user-defined split

Options

name	type	required	default value
url	String	Yes	-
driver	String	Yes	-
user	String	No	-
password	String	No	-
query	String	Yes	-
connection_check_timeout_sec	Int	No	30
partition_column	String	No	-
partition_upper_bound	Long	No	-
partition_lower_bound	Long	No	-

driver [string]

The jdbc class name used to connect to the remote data source, if you use MySQL the value is com.mysql.cj.jdbc.Driver. Warn: for license compliance, you have to provide MySQL JDBC driver yourself, e.g. copy mysql-connector-java-xxx.jar to $SEATNUNNEL_HOME/lib for Standalone.

user [string]

userName

password [string]

password

url [string]

The URL of the JDBC connection. Refer to a case: jdbc:postgresql://localhost/test

query [string]

Query statement

connection_check_timeout_sec [int]

The time in seconds to wait for the database operation used to validate the connection to complete.

partition_column [string]

The column name for parallelism's partition, only support numeric type.

partition_upper_bound [long]

The partition_column max value for scan, if not set SeaTunnel will query database get max value.

partition_lower_bound [long]

The partition_column min value for scan, if not set SeaTunnel will query database get min value.

tips

If partition_column is not set, it will run in single concurrency, and if partition_column is set, it will be executed in parallel according to the concurrency of tasks.

appendix

there are some reference value for params above.

datasource	driver	url	maven
mysql	com.mysql.cj.jdbc.Driver	jdbc:mysql://localhost:3306/test	https://mvnrepository.com/artifact/mysql/mysql-connector-java
postgresql	org.postgresql.Driver	jdbc:postgresql://localhost:5432/postgres	https://mvnrepository.com/artifact/org.postgresql/postgresql
dm	dm.jdbc.driver.DmDriver	jdbc:dm://localhost:5236	https://mvnrepository.com/artifact/com.dameng/DmJdbcDriver18

Example

simple:

    Jdbc {
        url = "jdbc:mysql://localhost/test?serverTimezone=GMT%2b8"
        driver = "com.mysql.cj.jdbc.Driver"
        connection_check_timeout_sec = 100
        user = "root"
        password = "123456"
        query = "select * from type_bin"
    }

parallel:

    Jdbc {
        url = "jdbc:mysql://localhost/test?serverTimezone=GMT%2b8"
        driver = "com.mysql.cj.jdbc.Driver"
        connection_check_timeout_sec = 100
        user = "root"
        password = "123456"
        query = "select * from type_bin"
        partition_column= "id"
    }