SQL FULL JOIN

The FULL JOIN keyword return rows when there is a match in one of the tables.


Syntax 

SELECT column_name(s)
FROM table_name1
FULL JOIN table_name2
ON table_name1.column_name=table_name2.column_name


Pur

OrderNo	custname	city
1	Siva	Srivilliputtur
2	Bala	Sivakasi
3	Kanna	Madurai

PurDet

sno	OrderNo	qty	rate
1	2	50	70
2	2	30	56
3	1	100	200
4	3	30	30
5	1	60	80

Example :


SELECT Pur.OrderNo as PurOrdNo,Pur.custname, Pur.City,PurDet.Orderno as PurDetOrdNo
FROM Pur
Full Join PurDet
ON Pur.Orderno=PurDet.OrderNo 

ORDER BY Pur.CustName

Output :

PurOrdNo	custname	city	PurDetOrdNo
NULL	NULL	NULL	5
NULL	NULL	NULL	4
2	Bala	Sivakasi	2
2	Bala	Sivakasi	2
3	Kannan	Madurai	NULL
1	Siva	Srivilliputtur	1

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