# Copying only partition when altering single table partition

**URL:** <https://forums.percona.com/t/copying-only-partition-when-altering-single-table-partition/5344>\
**Category:** Percona Toolkit\
**Created:** [January 13, 2017, 5:50am UTC](https://forums.percona.com/t/copying-only-partition-when-altering-single-table-partition/5344 "2017-01-13T05:50:32Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Karsten](https://avatars.discourse-cdn.com/v4/letter/k/e47c2d/32.png) [@Karsten](https://forums.percona.com/u/Karsten)\
**Post date:** [January 13, 2017, 5:50am UTC](https://forums.percona.com/t/copying-only-partition-when-altering-single-table-partition/5344/1 "2017-01-13T05:50:32Z")

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Hi

Can pt-online-schema-change be called so e.g. a REBUILD PARTITION will only copy the partition data by using ALTER TABLE EXCHANGE PARTITION so only the specific partition and not the complete table is copied when executing pt-online-schema-change?

Best Regards