SQL INTERSECT

SQL INTERSECT is query that allows you to select related information from 2 tables, this is combine 2 SELECT statement into 1 and display it out.

INTERSECT produces rows that appear in both queries.that means INTERSECT command acts as an AND operator (value is selected only if it appears in both statements).

The syntax is as follows:

SELECT [COLUMN NAME 1], [COLUMN NAME 2],… FROM [TABLE NAME 1]
INTERSECT
SELECT [COLUMN NAME 1], [COLUMN NAME 2],… FROM [TABLE NAME 2]

EXAMPLE :

We have 2 table name GamesScores, GameScores_new.

Table GameScores

PlayerName	Department	Scores
Jason	IT	3000
Irene	IT	1500
Jane	Marketing	1000
David	Marketing	2500
Paul	HR	2000
James	HR	2000

Table GameScores_new

PlayerName	Department	Scores
Jason	IT	3000
David	Marketing	2500
Paul	HR	2000
James	HR	2000

SQL statement :

SELECT PlayerName FROM GameScores
INTERSECT
SELECT PlayerName FROM GameScores_new

Result:

PlayerName

David

James

Jason

Paul