SQL DROP CONSTRAINT Keyword The DROP CONSTRAINT command is used to delete a UNIQUE, PRIMARY KEY, FOREIGN KEY, or CHECK […]

SQL DROP COLUMN Keyword The DROP COLUMN command is used to delete a column from an existing table. SQL DROP

SQL DROP Keyword The DROP command is used to delete database objects such as columns, tables, constraints, views, and indexes.

SQL DISTINCT Keyword The SELECT DISTINCT command returns only distinct or different values in the result set. It is used

SQL DESC Keyword The DESC command is used to sort the data returned in descending order. It is used with

SQL DELETE Keyword The DELETE command is used to delete existing records in a table. SQL DELETE Syntax If you

SQL DEFAULT Keyword The DEFAULT constraint provides a default value for a column. The default value will be added to

SQL DATABASE Keyword The DATABASE keyword is used with SQL commands like CREATE and DROP to manage whole databases. You

SQL CREATE VIEW Keyword The CREATE VIEW command is used to define a view. A view is a virtual table

SQL CREATE UNIQUE INDEX Keyword The CREATE UNIQUE INDEX command is used to create an index on a column that