• ALTER TABLE <table name> DROP CONSTRAINT <primary key name>

    ALTER TABLE <table name> ALTER COLUMN <column name> <new data types>

    ALTER TABLE <table name> ADD CONSTRAINT <primary key name> PRIMARY KEY (<columns for the primary key>)

    Gail Shaw
    Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
    SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

    We walk in the dark places no others will enter
    We stand on the bridge and no one may pass