ToDo modifyColumn ? modifyDataType

[ErwinvanBrandwijk]

Not yet created

Now listed as modifyColumn. Isn't modifyDataType?

[ErwinvanBrandwijk]

Possible solution in my fork. Renamed it to modifyDataType, because you are only changing dataType import liquibase.change.core.ModifyDataTypeChange

 void modifyDataType(Map params) {
    addMapBasedChange(ModifyDataTypeChange, params, ['schemaName', 'tableName', 'columnName', 'newDataType'])
 }

changelog changeSet(author: "erwin", id: "5") { modifyDataType(tableName: "books4", columnName: "author", newDataType: "varchar(40)")

    rollback{
        modifyDataType(tableName: "books4", columnName: "author", newDataType: "varchar(50)")
    }
}

Result

mysql> DESCRIBE books4;

Field | Type | Null | Key | Default

id | bigint(20) | NO | PRI | NULL
title | varchar(50) | YES | | NULL
author | varchar(40) | YES | | NULL

mysql> DESCRIBE books4;

Field | Type | Null | Key | Default

id | bigint(20) | NO | PRI | NULL
title | varchar(50) | YES | | NULL
author | varchar(50) | YES | | NULL

[ErwinvanBrandwijk]

Accepted in master