SQL
Scalar Utility Functions
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|   |   |
|:--|:--------|
| **Description** |Table function that returns the union of tables given in *`tbl_names`*. If the optional *`by_name`* parameter is set to `true`, it uses [`UNION ALL BY NAME`](#..:..:sql:query_syntax:setops::union-all-by-name) semantics. |
| **Example** | `query(['t1', 't2'])` |
| **Result** | (the union of the two tables) |