Question

I created a table named items and inserted name as int and provided the length as 255 type by mistake but now i wanted to alter the table structure and run the query as–

ALTER TABLE items
ALTER COLUMN name varchar(255); but it is not altering the table what i need to change in the table.help plz

Answer 1

there are two ways

ALTER TABLE t1 CHANGE <column_name> <column_name> <type> 

note: you have to write column name twice
OR

ALTER TABLE t1 MODIFY <column_name> <type> ;

Reference