2024-07-13 10:40:55 +02:00
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# clickhouse_ddl_export
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## Usage
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```
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usage: clickhouse_ddl_export [-h] [--export | --print-statements] [dumpfile]
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Exports clickhouse DDL, useful when adding replicas in a cluster
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positional arguments:
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dumpfile
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options:
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-h, --help show this help message and exit
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--export
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--print-statements
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```
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2024-07-14 10:53:19 +02:00
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## Examples
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Export tables from source node
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```
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clickhouse_ddl_export.py --export /tmp/source_db_tables.json
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clickhouse_ddl_export.py --print-statements /tmp/source_db_tables.json > /tmp/ddl.sql
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```
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In destination node
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```
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clickhouse client --multiquery < /tmp/ddl.sql
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```
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Then replication is applied, and data is fetched from source node(s)
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Have fun!
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2024-07-13 10:40:55 +02:00
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## License
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```text
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Copyright (c) 2024 PaulBSD
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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The views and conclusions contained in the software and documentation are those
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of the authors and should not be interpreted as representing official policies,
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either expressed or implied, of this project.
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```
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