how to create a column in 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: sqlserver add column to table

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

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