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SQL Set Operators

SQL Set Operators   Traditional Set Operators: Union Compatibility:     Requirement for the traditional set operators.    Strong requirement.                         - Same number of columns.                         - Each corresponding column is compatible.                         - Positional correspondence.     Apply to similar tables by removing columns first. SQL UNION Example:           Example 1: Retrieve basic data about all university people.                     SELECT FacNo AS PerNo, FacFirstName                                      ...
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Major SQL Statements

Major SQL Statements

Statement                                    Statement Type

CREATE TABLE                                                 Definitional, Control

CREATE VIEW                                                   Definitional

CREATE TYPE                                                   Definitional

SELECT                                                               Manipulation

INSERT, UPDATE, DELETE                            Manipulation

COMMIT, ROLLBACK                                    Manipulation

CREATE TRIGGER                                          Control, Manipulation

GRANT, REVOKE                                             Control



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SQL Set Operators

SQL Set Operators   Traditional Set Operators: Union Compatibility:     Requirement for the traditional set operators.    Strong requirement.                         - Same number of columns.                         - Each corresponding column is compatible.                         - Positional correspondence.     Apply to similar tables by removing columns first. SQL UNION Example:           Example 1: Retrieve basic data about all university people.                     SELECT FacNo AS PerNo, FacFirstName                                      ...
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