mysql> ALTER TABLE `UserRoleCompanie` ADD COLUMN `companieId` char(25) CHARACTER SET utf8 NOT NULL; Query OK, 0 rows affected (0.32 sec) Records: 0 Duplicates: 0 Warnings: 0 mysql> ALTER TABLE ...

Examining the data to identify common issues such as missing values, duplicates, incorrect data types, and outliers. This may involve running queries to select and inspect subsets of the data. -- Data ...