# Does the pxc cluster support online modification of data types?

**URL:** https://forums.percona.com/t/does-the-pxc-cluster-support-online-modification-of-data-types/10991
**Category:** Percona XtraDB Cluster 5.x
**Created:** [June 23, 2021, 4:41am UTC](https://forums.percona.com/t/does-the-pxc-cluster-support-online-modification-of-data-types/10991 "2021-06-23T04:41:58Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![eyanchao](https://avatars.discourse-cdn.com/v4/letter/e/b38774/32.png) [@eyanchao](https://forums.percona.com/u/eyanchao)
#### Post date: [June 23, 2021, 4:41am UTC](https://forums.percona.com/t/does-the-pxc-cluster-support-online-modification-of-data-types/10991/1 "2021-06-23T04:41:58Z")

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For example, modify the field type in a specific table from longtext to json?  
The modified data type, whether the nodes in the cluster will also be synchronized？

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### Author: ![Ivan\_Groenewold](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/ivan_groenewold/32/6299_2.png) [@Ivan\_Groenewold](https://forums.percona.com/u/Ivan_Groenewold)
#### Post date: [June 23, 2021, 11:17am UTC](https://forums.percona.com/t/does-the-pxc-cluster-support-online-modification-of-data-types/10991/2 "2021-06-23T11:17:16Z")

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Hi, the short answer is no. For the long answer check [Online DDL and Percona XtraDB Cluster 5.6](https://www.percona.com/blog/2015/10/09/online-ddl-percona-xtradb-cluster-5-6/)