1ALTER TABLE `TABLE_NAME`
2 ADD `COLUMN_NAME` VARCHAR(50) NULL
3 AFTER `COLUMN_NAME_AFTER`;
1-- ALTER TABLE tbl_name ADD COLUMN column_name column_definition
2-- [FIRST|AFTER existing_column];
3ALTER TABLE office ADD COLUMN phone VARCHAR(200) DEFAULT '000' AFTER name;
4ALTER TABLE office ADD COLUMN flag INT(1) FIRST;
5ALTER TABLE office ADD COLUMN last_col INT(2); -- Last column is default position
6-- ↓ Test it (Fiddle)
1ALTER TABLE table
2 ADD [COLUMN] column_name column_definition
3 [FIRST|AFTER existing_column];