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Create column sql

Sqlserver add column to table

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

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Create column sql

ALTER TABLE table_name
ADD column_name datatype;

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Sql server alter column

ALTER TABLE table_name 
ALTER COLUMN column_name new_data_type(size);

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Source: sqlservertutorial.net

Append column sql

ALTER TABLE table_name
ADD column_name datatype;--exampleALTER TABLE CustomersADD Email varchar(255);

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