create new column sql server code example

Example 1: append column sql

ALTER TABLE table_name
ADD column_name datatype;

--example
ALTER TABLE Customers
ADD Email varchar(255);

Example 2: create column sql server

ALTER TABLE table_name
ADD column_name datatype;

Example 3: sql server add column

ALTER TABLE dbo.doc_exa ADD column_b VARCHAR(20) NULL, column_c INT NULL ;

Example 4: how to make new column in sql

<?php
 
    echo str_replace("john", "jack", "hello i am john"); 
 
?>

Example 5: modify column name in tsql

sp_rename 'table_name.old_column', 'new_name', 'COLUMN';