create column sql

1ALTER TABLE Customers
2ADD Email varchar(255);
3

1ALTER TABLE table_name
2ADD column_name datatype;
3
4--example
5ALTER TABLE Customers
6ADD Email varchar(255);

1ALTER TABLE table_name 
2ALTER COLUMN column_name new_data_type(size);
3

1ALTER TABLE table_name
2ADD column_name datatype;

1ALTER TABLE dbo.doc_exa 
2ADD column_b VARCHAR(20) NULL, 
3	column_c INT NULL ;

1<?php
2 
3    echo str_replace("john", "jack", "hello i am john"); 
4 
5?>
6