modify column sql code example
Example 1: sql add column
ALTER TABLE Customers
ADD Email varchar(255);
Example 2: alter table modify column
-- ORACLE 18c
ALTER TABLE table_name
MODIFY column_name datatype;
-- Example
ALTER TABLE product
MODIFY description VARCHAR2(500 char);
Example 3: alter table query sql server change column
ALTER TABLE table_name
ALTER COLUMN column_name column_type;
Example 4: alter column sql server
ALTER TABLE table_name
ALTER COLUMN column_name datatype;
Example 5: alter table query sql server change column
ALTER TABLE employees
ALTER COLUMN last_name VARCHAR(75) NOT NULL;
Example 6: 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;