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Conditional Execute

Author

Topic

j11SqlTeam
Starting Member

1 Post

Posted - 2009-03-02 : 22:50:49

How do I properly write the following?

IF(@ParamVar > 0)
Execute (SELECT * FROM TABLE1)
ELSE
Execute (SELECT * FROM TABLE1 UNION SELECT * FROM TABLE2)

Thank you!

Nageswar9
Aged Yak Warrior

600 Posts

Posted - 2009-03-02 : 23:07:51

IF(@ParamVar > 0)
Execute ('SELECT * FROM TABLE1')
ELSE
Execute ('SELECT * FROM TABLE1 UNION SELECT * FROM TABLE2')

matty
Posting Yak Master

161 Posts

Posted - 2009-03-02 : 23:40:31

IF(@ParamVar > 0)
SELECT * FROM TABLE1
ELSE
SELECT * FROM TABLE1
UNION
SELECT * FROM TABLE2

bklr
Master Smack Fu Yak Hacker

1693 Posts

Posted - 2009-03-02 : 23:42:34

IF(@ParamVar > 0)
SELECT * FROM TABLE1
ELSE
begin
SELECT * FROM TABLE1
UNION
SELECT * FROM TABLE2
end
rememeber while using union the select columns should be same no of columns and same datatype

madhivanan
Premature Yak Congratulator

22864 Posts

Posted - 2009-03-03 : 02:40:04

Will this work?

SELECT * FROM TABLE1
UNION
SELECT * FROM TABLE2 WHERE @ParamVar <= 0

Madhivanan

Failing to plan is Planning to fail

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2009-03-03 : 09:16:56

quote:
Originally posted by madhivanan

Will this work?

SELECT * FROM TABLE1
UNION
SELECT * FROM TABLE2 WHERE @ParamVar <= 0

Madhivanan

Failing to plan is Planning to fail

yup it will

Also adding to that both tables should have same number of columns with corresponding ones of same type.
If its certain that duplicates dont exist, use UNION ALL instead of union.

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