| --- |
| title: Unloading Data Using COPY |
| --- |
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| `COPY TO` copies data from a table to a file (or standard input) on the HAWQ master host using a single process on the HAWQ master instance. Use `COPY` to output a table's entire contents, or filter the output using a `SELECT` statement. For example: |
| |
| ``` sql |
| COPY (SELECT * FROM country WHERE country_name LIKE 'A%') |
| TO '/home/gpadmin/a_list_countries.out'; |
| ``` |
| |
| |