Plz help with optimised sql query..!!

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Plz help with optimised sql query..!!

Author

Topic

dichanz
Starting Member

2 Posts

Posted - 2008-01-23 : 04:33:27

Hi, I am having 1 tables.....
table1 -
id,Lid

table2 -

actid, Lid

table2's Lid is foreign key relation with table1 - Lid
table1 can have id as primary key & Lid can have multiple values...

my query is;;;

select * from table 2 with additional column 'depend' as 1 if lid is present in table1 else 0

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2008-01-23 : 04:39:00

[code]SELECT t2.id,
t2.Lid,
CASE
WHEN t1.Lid IS NOT NULL THEN 1
ELSE 0
END AS 'Depend'
FROM table2 t2
LEFT OUTER JOIN table1 t1
ON t1.Lid=t2.Lid[/code]

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