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I know there a several Answers to this question but it i thing non of them fit my needs so here comes my question

based on this SQL Fiddle i will explain you what i'm trying to achieve.

How you can see it's just a simple table of persons so now i want to get a person by his id so i have to write a simple query SELECT * FROM Persons WHERE PersonID =@PersonID; to get him i can do this now for any possible combination and i will get tons of stored procedures just for this Table

So here is my question how do i create a stored procedure that combines all this functionality in one. So that i will be able to just give here the LastName 'Schmidt' and get all Schmidt's. than ask her for all Paul's in NewYork

to make it easyer:

  • it's enough if this Stored Procedure is only able to handle "AND"
  • also it's enough if it select all columns
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1 Answer 1

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Try something like this:

SELECT * FROM Persons WHERE PersonID = ifnull(@PersonID,personID) AND LastName = ifnull(@LastName,LastName) AND FirstName = ifnull(@FirstName, FirstName) AND Address = ifnull(@Address,Address) AND City = ifnull(@City,City)

and see it on SQL Fiddle.

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could you please take a look at this Question it is related to your answer, thanks in advance

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