modify a column in sql code example
Example 1: sql add column
ALTER TABLE Customers
ADD Email varchar(255);
Example 2: alter table add column
ALTER TABLE table
ADD COLUMN column VARCHAR (255) NOT NULL AFTER column;
Example 3: alter table modify column
ALTER TABLE table_name
MODIFY column_name datatype;
ALTER TABLE product
MODIFY description VARCHAR2(500 char);
Example 4: sql alter column
Changes the data type of a table’s column.
Example: In the ‘users’ table, make the column ‘incept_date’ into a
‘datetime’ type.
ALTER TABLE users
ALTER COLUMN incept_date datetime;
Example 5: alter table query sql server change column
sp_rename 'employees.last_name', 'lname', 'COLUMN';