How to place a condition in a filter criteria in t-sql (#2)?

Hi Experts,

I need some modification to the following posts answer.
https://www.experts-exchange.com/questions/28984589/How-to-place-a-condition-in-a-filter-criteria-in-t-sql.html?anchor=a41896938¬ificationFollowed=179661574#a41896938
I want to change the following code
SELECT * FROM Wordings
WHERE 
	  ISNULL( DateFields , '' ) >=  CASE WHEN Wording LIKE '%My Wording%' THEN '1/1/16' ELSE ISNULL(DateFields ,'') END

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that in case the wording is found then instead of selecting where datefields >= '1/1/16', I want to put the following "EmployeeID in (select id from employeestbl where datefields >= '1/1/16')"
PS. The reason for this change is that the date field is in another table.

Thanks in advance.
LVL 5
bfuchsAsked:
Who is Participating?
 
Pawan KumarDatabase ExpertCommented:
Something like...

SELECT * FROM Wordings w
WHERE EmployeeID IN 
	  (
	  
		SELECT Id from employeestbl 
		WHERE DateFields >= CASE WHEN w.Wording LIKE '%My Wording%' THEN '1/1/16' ELSE ISNULL(DateFields ,'') END
	  
	  ) 

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0
 
Pawan KumarDatabase ExpertCommented:
Try..

SELECT * FROM Wordings w
INNER JOIN employeestbl e ON e.ID = W.EmployeeID
WHERE ISNULL( w.DateFields , '' ) >=  CASE WHEN w.Wording LIKE '%My Wording%' THEN '1/1/16' ELSE ISNULL(w.DateFields ,'') END

--

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bfuchsAuthor Commented:
Hi Pawan,

The story here is as follows..

As described in the first post, this criteria is being build dynamically, meaning the record source is pre-defined and just the filter keeps changing according to what users have selected.

Therefore I would need a solution that keeps the select * from Wordings intact and just changes the where clause to insert the filter in case of that wording..

Let me know if its clear.

Thanks,
Ben
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NorieVBA ExpertCommented:
Ben

Do you want to apply the condition in the code that's creating the SQL rather than in the SQL itself?
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bfuchsAuthor Commented:
Ok thats on the way..

I just have an issue with this regarding performance, as it will run the statement where employeeid in (select id .. for every row, while its only necessary for those who have that wording.

How about we do something like where wording not like "%My Wording%" or id in (select id from employeestbl where datefields >= '1/1/16')?

Thanks,
Ben
0
 
bfuchsAuthor Commented:
@Norie,

Not sure how's that possible as this depends on each record?

Thanks,
Ben
0
 
Pawan KumarDatabase ExpertCommented:
Try.. I hope my last comment did not work.

SELECT * FROM Wordings
WHERE 
id IN ( CASE WHEN Wording NOT LIKE '%My Wording%' THEN (select id from employeestbl where datefields >= '1/1/16') ELSE (SELECT Id FROM Wordings) END )

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0
 
bfuchsAuthor Commented:
Hi Experts,

At the moment looks like the following will do whats needed in our app.

select * from wordings 
	  where wording  like '%My Wording%' and id in (select id from employeestbl where employeestatusdate >= '1/1/06')

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However will wait with finalizing until I integrate with the app.

Thanks,
Ben
0
 
Pawan KumarDatabase ExpertCommented:
Great Ben !!
0
 
bfuchsAuthor Commented:
TY!
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