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When ***BitSail*** transmits data to a specified data source, it needs to convert the intermediate format (`bitsail rows`) used in the transmission process into a data type acceptable to the data source.
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When **BitSail** transmits data to a specified data source, it needs to convert the intermediate format (`bitsail rows`) used in the transmission process into a data type acceptable to the data source.
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This module provides convenient tools for converting.
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- In this context, `bitsail rows` means `com.bytedance.bitsail.common.column.Column` data wrapped by `org.apache.flink.types.Row`。
Copy file name to clipboardExpand all lines: website/en/documents/connectors/clickhouse/clickhouse.md
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# ClickHouse connector
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Parent document: [connectors](../README.md)
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Parent document: [Connectors](../README.md)
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**BitSail** ClickHouse connector can be used to read data in ClickHouse, mainly supports the following functions:
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- Support batch reading of ClickHouse tables
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- JDBC Driver version used: 0.3.2-patch11
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- JDBC Driver version: 0.3.2-patch11
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## Maven dependency
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#### Optional parameters
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| user_name | No || Username to access ClickHouse services |
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| password | No || The password of the above user |
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| split_field | No || Batch query fields, only support Int8 - Int64 and UInt8 - UInt32 integer types |
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| split_config | No || The configuration for batch query according to `split_field` field, including initial value, maximum value and query times, <p/> For example: `{"lower_bound": 0, "upper_bound": 10000, "split_num": 3}`|
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| sql_filter | No || The filter condition of the query, such as `( id % 2 == 0 )`, will be spliced into the WHERE clause of the query SQL |
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| reader_parallelism_num | No || Concurrency for reading ClickHouse tables |
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| Parameter name | Required | Optional value | Description |
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