JDBC SQL Server Sink Connector
Support SQL Server Version
- server:2008 (Or later version for information only)
Support Those engines
Spark
Flink
Seatunnel Zeta
Description
Write data through jdbc. Support Batch mode and Streaming mode, support concurrent writing, support exactly-once semantics (using XA transaction guarantee).
Using Dependency
For Spark/Flink Engine
- You need to ensure that the jdbc driver jar package has been placed in directory
${SEATUNNEL_HOME}/plugins/.
For SeaTunnel Zeta Engine
- You need to ensure that the jdbc driver jar package has been placed in directory
${SEATUNNEL_HOME}/lib/.
Key Features
Use
Xa transactionsto ensureexactly-once. So only supportexactly-oncefor the database which is supportXa transactions. You can setis_exactly_once=trueto enable it.
Supported DataSource Info
| Datasource | Supported Versions | Driver | Url | Maven | 
|---|---|---|---|---|
| SQL Server | support version >= 2008 | com.microsoft.sqlserver.jdbc.SQLServerDriver | jdbc:sqlserver://localhost:1433 | Download | 
Database dependency
Please download the support list corresponding to ‘Maven’ and copy it to the ‘$SEATNUNNEL_HOME/plugins/jdbc/lib/‘ working directory
For example SQL Server datasource: cp mssql-jdbc-xxx.jar $SEATNUNNEL_HOME/plugins/jdbc/lib/
Data Type Mapping
| SQLserver Data Type | SeaTunnel Data Type | 
|---|---|
| BIT | BOOLEAN | 
| TINYINT SMALLINT | SHORT | 
| INTEGER | INT | 
| BIGINT | LONG | 
| DECIMAL NUMERIC MONEY SMALLMONEY | DECIMAL((Get the designated column’s specified column size)+1, (Gets the designated column’s number of digits to right of the decimal point.))) | 
| REAL | FLOAT | 
| FLOAT | DOUBLE | 
| CHAR NCHAR VARCHAR NTEXT NVARCHAR TEXT | STRING | 
| DATE | LOCAL_DATE | 
| TIME | LOCAL_TIME | 
| DATETIME DATETIME2 SMALLDATETIME DATETIMEOFFSET | LOCAL_DATE_TIME | 
| TIMESTAMP BINARY VARBINARY IMAGE UNKNOWN | Not supported yet | 
Sink Options
| Name | Type | Required | Default | Description | 
|---|---|---|---|---|
| url | String | Yes | - | The URL of the JDBC connection. Refer to a case: jdbc:sqlserver://localhost:1433;databaseName=mydatabase | 
| driver | String | Yes | - | The jdbc class name used to connect to the remote data source, if you use sqlServer the value is com.microsoft.sqlserver.jdbc.SQLServerDriver. | 
| user | String | No | - | Connection instance user name | 
| password | String | No | - | Connection instance password | 
| query | String | No | - | Use this sql write upstream input datas to database. e.g INSERT ...,queryhave the higher priority | 
| database | String | No | - | Use this databaseandtable-nameauto-generate sql and receive upstream input datas write to database.This option is mutually exclusive with queryand has a higher priority. | 
| table | String | No | - | Use database and this table-name auto-generate sql and receive upstream input datas write to database. This option is mutually exclusive with queryand has a higher priority. | 
| primary_keys | Array | No | - | This option is used to support operations such as insert,delete, andupdatewhen automatically generate sql. | 
| support_upsert_by_query_primary_key_exist | Boolean | No | false | Choose to use INSERT sql, UPDATE sql to process update events(INSERT, UPDATE_AFTER) based on query primary key exists. This configuration is only used when database unsupport upsert syntax. Note: that this method has low performance | 
| connection_check_timeout_sec | Int | No | 30 | The time in seconds to wait for the database operation used to validate the connection to complete. | 
| max_retries | Int | No | 0 | The number of retries to submit failed (executeBatch) | 
| batch_size | Int | No | 1000 | For batch writing, when the number of buffered records reaches the number of batch_sizeor the time reachescheckpoint.interval, the data will be flushed into the database | 
| is_exactly_once | Boolean | No | false | Whether to enable exactly-once semantics, which will use Xa transactions. If on, you need to set xa_data_source_class_name. | 
| generate_sink_sql | Boolean | No | false | Generate sql statements based on the database table you want to write to | 
| xa_data_source_class_name | String | No | - | The xa data source class name of the database Driver, for example, SqlServer is com.microsoft.sqlserver.jdbc.SQLServerXADataSource, andplease refer to appendix for other data sources | 
| max_commit_attempts | Int | No | 3 | The number of retries for transaction commit failures | 
| transaction_timeout_sec | Int | No | -1 | The timeout after the transaction is opened, the default is -1 (never timeout). Note that setting the timeout may affect exactly-once semantics | 
| auto_commit | Boolean | No | true | Automatic transaction commit is enabled by default | 
| common-options | no | - | Sink plugin common parameters, please refer to Sink Common Options for details | |
| enable_upsert | Boolean | No | true | Enable upsert by primary_keys exist, If the task has no key duplicate data, setting this parameter to falsecan speed up data import | 
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.
Task Example
simple:
This is one that reads Sqlserver data and inserts it directly into another table
env {
# You can set engine configuration here
parallelism = 10
}
source {
# This is a example source plugin **only for test and demonstrate the feature source plugin**
Jdbc {
driver = com.microsoft.sqlserver.jdbc.SQLServerDriver
url = "jdbc:sqlserver://localhost:1433;databaseName=column_type_test"
user = SA
password = "Y.sa123456"
query = "select * from column_type_test.dbo.full_types_jdbc"
# Parallel sharding reads fields
partition_column = "id"
# Number of fragments
partition_num = 10
}
# If you would like to get more information about how to configure seatunnel and see full list of source plugins,
# please go to https://seatunnel.apache.org/docs/connector-v2/source/Jdbc
}
transform {
# If you would like to get more information about how to configure seatunnel and see full list of transform plugins,
# please go to https://seatunnel.apache.org/docs/transform-v2/sql
}
sink {
Jdbc {
driver = com.microsoft.sqlserver.jdbc.SQLServerDriver
url = "jdbc:sqlserver://localhost:1433;databaseName=column_type_test"
user = SA
password = "Y.sa123456"
query = "insert into full_types_jdbc_sink( id, val_char, val_varchar, val_text, val_nchar, val_nvarchar, val_ntext, val_decimal, val_numeric, val_float, val_real, val_smallmoney, val_money, val_bit, val_tinyint, val_smallint, val_int, val_bigint, val_date, val_time, val_datetime2, val_datetime, val_smalldatetime ) values( ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ? )"
} # If you would like to get more information about how to configure seatunnel and see full list of sink plugins,
# please go to https://seatunnel.apache.org/docs/connector-v2/sink/Jdbc
}
CDC(Change data capture) event
CDC change data is also supported by us In this case, you need config database, table and primary_keys.
Jdbc {
source_table_name = "customers"
driver = com.microsoft.sqlserver.jdbc.SQLServerDriver
url = "jdbc:sqlserver://localhost:1433;databaseName=column_type_test"
user = SA
password = "Y.sa123456"
generate_sink_sql = true
database = "column_type_test"
table = "dbo.full_types_sink"
batch_size = 100
primary_keys = ["id"]
}
Exactly Once Sink
Transactional writes may be slower but more accurate to the data
Jdbc {
driver = com.microsoft.sqlserver.jdbc.SQLServerDriver
url = "jdbc:sqlserver://localhost:1433;databaseName=column_type_test"
user = SA
password = "Y.sa123456"
query = "insert into full_types_jdbc_sink( id, val_char, val_varchar, val_text, val_nchar, val_nvarchar, val_ntext, val_decimal, val_numeric, val_float, val_real, val_smallmoney, val_money, val_bit, val_tinyint, val_smallint, val_int, val_bigint, val_date, val_time, val_datetime2, val_datetime, val_smalldatetime ) values( ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ? )"
is_exactly_once = "true"
xa_data_source_class_name = "com.microsoft.sqlserver.jdbc.SQLServerXADataSource"
} # If you would like to get more information about how to configure seatunnel and see full list of sink plugins,
# please go to https://seatunnel.apache.org/docs/connector-v2/sink/Jdbc
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