# Mysql problem - changes bool to tinyint

**URL:** <https://forum.kirupa.com/t/mysql-problem-changes-bool-to-tinyint/160165>\
**Category:** Uncategorized\
**Created:** [August 23, 2005, 9:49pm UTC](https://forum.kirupa.com/t/mysql-problem-changes-bool-to-tinyint/160165 "2005-08-23T21:49:14Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![kdd](https://avatars.discourse-cdn.com/v4/letter/k/ecb155/32.png) [@kdd](https://forum.kirupa.com/u/kdd)\
**Post date:** [August 23, 2005, 9:49pm UTC](https://forum.kirupa.com/t/mysql-problem-changes-bool-to-tinyint/160165/1 "2005-08-23T21:49:14Z")

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after i selcted bool in Data Type, and try to save it, it automatically changes it to tinyint, and then if i try to change it back to bool, and save it, it reports error. what’s up with it? how can it select bool?