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POnot able to retrieve if the table column has null value
 

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    <p>I have stored procedure to find customer, its working fine. If <code>Customer_City_Name</code> is null in the table then I am not able to retrieve the row. SP fails . how to do this I have to get result even if <code>Customer_City_Name</code> or <code>Customer_Country_Code</code> <code>IS NULL</code> </p> <pre><code>EXEC findCustomer null,'%',null,null, </code></pre> <p>SP code:</p> <pre><code>CREATE PROCEDURE findCustomer @customerNumber NVARCHAR(100), @customerNamePattern NVARCHAR(35), @customerCityNamePattern NVARCHAR(35), @customerCountryCode NVARCHAR(5) AS BEGIN DECLARE @SQL NVARCHAR(4000) SET @SQL = ' SELECT c.Customer_Number, c.Customer_Name, c.Postal_Address_Identifier, c.Customer_Street_Or_Road_Name, c.Customer_City_Name, c.Customer_Territory_Code, c.Customer_Postal_Code, c.Customer_Country_Code, c.Telephone_Number, c.Mobile_Telephone_Number, c.Fax_Number, c.Email_Address FROM Customer c WHERE c.Customer_Number LIKE ' + CASE WHEN @customerNumber IS NOT NULL THEN '''' + @customerNumber + '''' ELSE 'c.Customer_Number' END + ' AND c.Customer_Name LIKE ' + CASE WHEN @customerNamePattern IS NOT NULL THEN '''' + @customerNamePattern + '''' ELSE 'c.Customer_Name' END + ' AND c.Customer_City_Name LIKE ' + CASE WHEN @customerCityNamePattern IS NOT NULL THEN '''' +@customerCityNamePattern + '''' ELSE 'c.Customer_City_Name' END + ' AND c.Customer_Country_Code LIKE ' + CASE WHEN @customerCountryCode IS NOT NULL THEN '''' +@customerCountryCode + '''' ELSE 'c.Customer_Country_Code' END EXEC sp_executesql @SQL </code></pre>
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    1. COGEEZ! Please **reformat** and clean up your post - this is a huge mess! ***Please*** highlight lines of code in the text editor and click on the "code samples" button ( `{ }` ) on the editor toolbar to nicely format and syntax highlight it!
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    2. COYou have a stored procedure that generates dynamic SQL and executes it. Couldn't you use parametrized queries instead? They'd be less vulnerable to injection.
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