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toc_priority: 38
toc_title: merge
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# merge {#merge}

`merge(db_name, 'tables_regexp')` – Creates a temporary Merge table. For more information, see the section “Table engines, Merge”.

The table structure is taken from the first table encountered that matches the regular expression.

[Original article](https://clickhouse.tech/docs/en/query_language/table_functions/merge/) <!--hide-->