Add/Drop column in SQL Server

madeinstein ,

Add new column to existing table 

IF NOT EXISTS( SELECT 1 FROM information_schema.columns WHERE table_name = 'table_name' AND column_name = 'column_name' )

BEGIN

  ALTER TABLE table_name ADD column_name VARCHAR(255) NULL

END

GO

Remove column from the table 

IF EXISTS( SELECT 1 FROM information_schema.columns WHERE table_name = 'table_name' AND column_name = 'column_name' )

BEGIN

  ALTER TABLE table_name DROP COLUMN column_name

END

GO

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