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SQL with Search Parameter

Author

Topic

t0ze
Starting Member

10 Posts

Posted - 2010-11-18 : 09:58:03

Hi all,

I was wondering if it is possible to make one simple query using a parameter wich will be used on "where" statment. That will have two different behaviors.

Imagine something like this

**** TABLE1****
ProductId | Price|
1|12|
2|32|
3|23|
4|23|

1) scenario; getting the all list
SELECT * FROM TABLE1
WHERE PorductId = (no product specified)

RESULT: This will return all products

2) scenario; getting one product
SELECT * FROM TABLE1
WHERE PorductId = 4(4 is parameter, sent to the query)

RESULT: Product 4 | Price 23

Conclusion; How do i build one query that allows this two diffrents results ?

Best regards

jimf
Master Smack Fu Yak Hacker

2875 Posts

Posted - 2010-11-18 : 10:08:46

Don't know how smart this is, but it'll work

Where ProductID = @parameter or(@parameter is null and 1=1)

Jim

Everyday I learn something that somebody else already knew

t0ze
Starting Member

10 Posts

Posted - 2010-11-18 : 10:18:03

Hi Jim, tks for the reply

It should be something like this ?

SELECT * FROM TABLE1
WHERE PorductId = @Parameter

(it doesn't returns anything, because the Parameter is Null)

I tried

SELECT * FROM TABLE1
WHERE ProductId = @parameter is null and 1=1

(error)

Can you give me an example using TABLE1 ?

ahmeds08
Aged Yak Warrior

737 Posts

Posted - 2010-11-18 : 10:41:20

in the where condition mention both the parameters by using OR operator.
example:where parameter=@parameter OR parameter=''

jimf
Master Smack Fu Yak Hacker

2875 Posts

Posted - 2010-11-18 : 11:01:52

use the code I wrote, not just a piece of it

Where ProductID = @parameter or(@parameter is null and 1=1)

Jim

Everyday I learn something that somebody else already knew

t0ze
Starting Member

10 Posts

Posted - 2010-11-18 : 12:38:12

@ahmeds08 and @Jim

Tks for the help, problem solved, with;

where parameter=@parameter OR parameter=''

Tks to both of u!

X002548
Not Just a Number

15586 Posts

Posted - 2010-11-18 : 12:40:05

Parameter = COALESCE(@Paramter,Parameter)

Brett

8-)

Hint: Want your questions answered fast? Follow the direction in this link
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