Answers for "set operators"

set operators in sql

UNION ALL:
COMBINES THE RESULT OF 2 QUERY AND
DOESN'T REMOVE DUPLICATE ROWS
AND DOESN'T SORT BY FIRST COLUMN

UNION:
COMBINES THE RESULT OF 2 QUERY AND
REMOVES DUPLICATE ROWS AND
SORTS BY FIRST COLUMN 

MINUS:
MINUS RETURNS THE LEFT NON MATCHING
DATA AS A RESULT.


INTERSECT:
BASICALLY INTERSECT COMBINES COMMON
ELEMENTS OF BOTH TABLES

set operators

Ops 		P	⨯	 \	 =	 ≠
Front 		⊂	⊄	⊆	⊈	⊊ 
Back 		⊃	⊅	⊇	⊉	⊋
Inside 		∀	∃	∊	∍
Objects 	∅	∞	∆	∇

set operations

UNION ALL:
COMBINES THE RESULT OF 2 QUERY AND
DOESN'T REMOVE DUPLICATE ROWS
AND DOESN'T SORT BY FIRST COLUMN

UNION:
COMBINES THE RESULT OF 2 QUERY AND
REMOVES DUPLICATE ROWS AND
SORTS BY FIRST COLUMN 

MINUS:
MINUS RETURNS THE LEFT NON MATCHING
DATA AS A RESULT.


INTERSECT:
BASICALLY INTERSECT COMBINES COMMON
ELEMENTS OF BOTH TABLES