List merchant based on search input parameter

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List merchant based on search input parameter

Author

Topic

dhinasql
Posting Yak Master

195 Posts

Posted - 2014-01-01 : 03:01:19

Friends,
I am new for SQL SP
I have three table,

Table 1 - Merchant

MerchantID MerchantName Zip
1 Merchant1 1001
2 Merchant2 1002
3 Merchant3 1003
4 Merchant4 1004

Table 2 - Region

RegionID RegionName
1 Region1
2 Region2
3 Region3

Table 3 - Offer

OfferID RegionID MerchantID
1 1 3
2 1 2
3 1 1
4 2 2
5 2 4

I have two input parameter for this SP, @MerchantName = NULL and @RegionName = NULL

Expected Result Table

If input parameter @MerchantName = NULL and @RegionName = NULL

MerchantID MerchantName Zip
1 Merchant1 1001
2 Merchant2 1002
3 Merchant3 1003
4 Merchant4 1004

If we Search by RegionName="Region1" Ex: @MerchantName = NULL and @RegionName = 'Region1'

MerchantID MerchantName Zip
1 Merchant1 1001
2 Merchant2 1002
3 Merchant3 1003

If we Search by RegionName="Region2" Ex: @MerchantName = NULL and @RegionName = 'Region2'

MerchantID MerchantName Zip
2 Merchant2 1002
4 Merchant4 1004

If we search by MerchantName='Merchant1' Ex: @MerchantName = 'Merchant1' and @RegionName = ''

MerchantID MerchantName Zip
1 Merchant1 1001

Please help me to get the expected result for the above scenario

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2014-01-01 : 10:58:37

you need to use a logic like below


CREATE PROC GetMerchantDetails
@MerchantName varchar(100)= NULL,
@RegionName  varchar(100) = NULL
AS
SELECT *
FROM Merchant m
WHERE EXISTS(SELECT 1
FROM Offer o
INNER JOIN Region r
ON r.RegionID = o.RegionID
WHERE o.MerchantID = m.MerchantID
AND (r.RegionName = @RegionName 
OR @RegionName IS NULL)
)
AND (MerchantName = @MerchantName
OR @MerchantName IS NULL) 
GO

------------------------------------------------------------------------------------------------------
SQL Server MVP
http://visakhm.blogspot.com/
https://www.facebook.com/VmBlogs

dhinasql
Posting Yak Master

195 Posts

Posted - 2014-01-02 : 12:04:03

Thank you so much Visakh, Its working great...

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2014-01-02 : 12:24:08

welcome

------------------------------------------------------------------------------------------------------
SQL Server MVP
http://visakhm.blogspot.com/
https://www.facebook.com/VmBlogs

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