Steve Ebersole ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) *updated* an issue Hibernate ORM ( https://hibernate.atlassian.net/browse/HHH?atlOrigin=eyJpIjoiOThhMzY2YWY2... ) / Bug ( https://hibernate.atlassian.net/browse/HHH-16578?atlOrigin=eyJpIjoiOThhMz... ) HHH-16578 ( https://hibernate.atlassian.net/browse/HHH-16578?atlOrigin=eyJpIjoiOThhMz... ) Incorrect validation error for tinyint, but and datetime ( https://hibernate.atlassian.net/browse/HHH-16578?atlOrigin=eyJpIjoiOThhMz... ) Change By: Steve Ebersole ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) See [ https://discourse.hibernate.org/t/error-in-native-query-where-column-is-m... |https://discourse. hibernate.org/t/error-in-native-query-where-column-is-mapped-twice/6781/7]. For some MySQL data types full column definition results in the following exception (that stops a spring boot application from starting): org.hibernate.tool.schema.spi.SchemaManagementException: Schema-validation: wrong column type encountered in column [level] in table [test_data]; found [tinyint (Types#TINYINT)], but expecting [tinyint unsigned default '0' (Types#INTEGER)] For example, for this table: {noformat} CREATE TABLE `test_data` ( `id` int unsigned NOT NULL AUTO_INCREMENT, `level` tinyint unsigned DEFAULT '0', `delete_date` datetime DEFAULT '1970-01-01 00:00:00', PRIMARY KEY (`id`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1; {noformat} this is fine: {noformat} @Column(name = "level", columnDefinition = "tinyint") private int level; {noformat} but this results in the exception mentioned above: {noformat} @Column(name = "level", columnDefinition = "tinyint UNSIGNED DEFAULT '0'") private int level; {noformat} Same for datetime, bit and maybe others. Creating this issue on request by beikov. [^hybernate-validation-error-spring-boot.zip] ( https://hibernate.atlassian.net/browse/HHH-16578#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-16578#add-comment?atlOrigin=ey... ) Get Jira notifications on your phone! Download the Jira Cloud app for Android ( https://play.google.com/store/apps/details?id=com.atlassian.android.jira.... ) or iOS ( https://itunes.apple.com/app/apple-store/id1006972087?pt=696495&ct=Em... ) This message was sent by Atlassian Jira (v1001.0.0-SNAPSHOT#100225- sha1:11e4e77 )