Change a Column Name in MySQL

Change a Column Name in MySQL In the event that you previously made your MySQL database, and you choose sometime later that one of the segments is named inaccurately, you dont need to expel it and include a substitution; you can basically rename it. Renaming a Database Column You rename a segment in MySQL utilizing the ALTER TABLE and CHANGE commands together to change a current segment. For instance, say theâ column is at present named Soda, yet you conclude that Beverage isâ a increasingly suitable title. The section is situated on the table entitled Menu. Here is a case of how to transform it: Adjust TABLE menu CHANGE soft drink refreshment varchar(10) ; In a genericâ form, where you substitute your terms, this is: Adjust TABLE tablename CHANGE oldname newname varchar(10) ; About VARCHAR The VARCHAR(10) in the models can change to be fitting for your section. VARCHAR is a character string of variable length. The greatest length-in this exampleâ it is 10-demonstrates the most extreme number of characters you need to store in the segment. VARCHAR(25) could hide away to 25 characters. Different Uses for ALTER TABLE The ALTER TABLE command can likewise be utilized to add another section to a table or to expel a whole segment and every one of its information from a table. For instance, to include a segment use: Change TABLE table_nameADD column_name datatype To erase a section, use: Change TABLE table_nameDROP COLUMN column_nameâ You can likewise make changes to a segments size and type in MySQL.