1ALTER TABLE your_table_name RENAME COLUMN original_column_name TO new_column_name;
1ALTER TABLE table_name
2ADD [COLUMN] column_name column_definition [FIRST|AFTER existing_column];
1ALTER TABLE tableName CHANGE `oldcolname` `newcolname` datatype(length);
2(you can remove the backticks if it doesn't work)
1ALTER TABLE table
2 ADD [COLUMN] column_name column_definition
3 [FIRST|AFTER existing_column];
1#Alter is used
2#alter table TableName change CurrentColumnName NewColumnName Specification(size);
3alter table TableName change name firstname varchar(30);
4