Question

Notice the 2 queries below. The 1st one does a union on 4 queries. I’m trying to write #2 for search conditions based on the 3 SQL variables prefixed with an “@”. So rather than doing a union, we have to take all 3 parameters into consideration for the search. And if any parameter/variable is ” (or NULL), just ignore that condition, but still perform the search. But all fields have to combine with each other for a single row/record in the search results.

How do I re-write QUERY #2 so that it pulls results based on the search conditions (@companyName, @primaryPhone and @postalCode)? I think each section in the where clause has to have some OR condition (so it doesn’t skip the row for a ”/NULL search condition), but I’m curious how this is typically done. The @primaryPhone part of the where clause is a little trickier because it looks at both phone and fax.

QUERY #1

SELECT tempTable.optionValue, tempTable.optionText FROM (   

    SELECT 
        address.addressid AS 'optionValue', 
        address.name AS 'optionText'
    FROM 
        dbo.address 
    WHERE 
        addressid=1

    UNION

    -- Company Name internal partial match
    SELECT 
        address.addressid AS 'optionValue', 
        ('[' + CAST(address.addressid AS NVARCHAR(10)) + '] ' + ISNULL(address.name,'') + ', ' + ISNULL(address1,'') + ', ' + ISNULL(city,'') + ' ' + ISNULL(statecode,'') + ', ' + ISNULL(countrycode,'') + ' ' + ISNULL(postalcode,'')) AS 'optionText'
    FROM 
        dbo.[address]
        LEFT OUTER JOIN dbo.contact_address ON dbo.address.addressid = dbo.contact_address.addressid
        LEFT OUTER JOIN dbo.clientcontact ON dbo.contact_address.contactid = dbo.clientcontact.contactid
        LEFT OUTER JOIN dbo.client ON dbo.clientcontact.clientid = dbo.client.clientid
        LEFT OUTER JOIN dbo.contact ON dbo.contact_address.contactid = dbo.contact.contactid
    WHERE 
        client.name IS NOT NULL 
        AND client.name != ''
        AND @companyName != ''
        AND @companyName IS NOT NULL
        AND client.name LIKE '%' + @companyName + '%' 
        AND clientcontact.contacttypeid = 3 --primary contacts only

    UNION

    -- Primary Phone/Fax internal partial match     
    SELECT 
        address.addressid AS 'optionValue', 
        ('[' + CAST(address.addressid AS NVARCHAR(10)) + '] ' + ISNULL(address.name,'') + ', ' + ISNULL(address1,'') + ', ' + ISNULL(city,'') + ' ' + ISNULL(statecode,'') + ', ' + ISNULL(countrycode,'') + ' ' + ISNULL(postalcode,'')) AS 'optionText'
    FROM 
        dbo.[contact]
        LEFT OUTER JOIN dbo.clientcontact ON dbo.contact.contactid = dbo.clientcontact.contactid
        LEFT OUTER JOIN dbo.contact_address ON dbo.contact.contactid = dbo.contact_address.contactid
        LEFT OUTER JOIN dbo.address ON dbo.contact_address.addressid = dbo.address.addressid
    WHERE 
        (
            contact.dayphone IS NOT NULL 
            AND contact.dayphone != ''
            AND @primaryPhone != ''
            AND @primaryPhone IS NOT NULL
            AND contact.dayphone LIKE '%' + @primaryPhone + '%'
        )
        OR 
        (
            contact.fax IS NOT NULL 
            AND contact.fax != ''
            AND @primaryPhone != ''
            AND @primaryPhone IS NOT NULL
            AND contact.fax LIKE '%' + @primaryPhone + '%' 
        )
        AND clientcontact.contacttypeid = 3 --primary contacts only

    UNION

    SELECT 
        address.addressid AS 'optionValue', 
        ('[' + CAST(address.addressid AS NVARCHAR(10)) + '] ' + ISNULL(address.name,'') + ', ' + ISNULL(address1,'') + ', ' + ISNULL(city,'') + ' ' + ISNULL(statecode,'') + ', ' + ISNULL(countrycode,'') + ' ' + ISNULL(postalcode,'')) AS 'optionText'
    FROM 
        dbo.[contact]
        LEFT OUTER JOIN dbo.clientcontact ON dbo.contact.contactid = dbo.clientcontact.contactid
        LEFT OUTER JOIN dbo.contact_address ON dbo.contact.contactid = dbo.contact_address.contactid
        LEFT OUTER JOIN dbo.address ON dbo.contact_address.addressid = dbo.address.addressid
    WHERE 
        @postalCode != ''
        AND @postalCode IS NOT NULL
        AND address.postalcode LIKE @postalCode + '%'
        AND clientcontact.contacttypeid = 3 --primary contacts only

) AS tempTable

QUERY #2 (SEARCH)

SELECT tempTable.optionValue, tempTable.optionText FROM (   

    SELECT 
        address.addressid AS 'optionValue', 
        address.name AS 'optionText'
    FROM 
        dbo.address 
    WHERE 
        addressid=1

    UNION

    SELECT 
        address.addressid AS 'optionValue', 
        ('[' + CAST(address.addressid AS NVARCHAR(10)) + '] ' + ISNULL(address.name,'') + ', ' + ISNULL(address1,'') + ', ' + ISNULL(city,'') + ' ' + ISNULL(statecode,'') + ', ' + ISNULL(countrycode,'') + ' ' + ISNULL(postalcode,'')) AS 'optionText'
    FROM 
        dbo.[address]
        LEFT OUTER JOIN dbo.contact_address ON dbo.address.addressid = dbo.contact_address.addressid
        LEFT OUTER JOIN dbo.clientcontact ON dbo.contact_address.contactid = dbo.clientcontact.contactid
        LEFT OUTER JOIN dbo.client ON dbo.clientcontact.clientid = dbo.client.clientid
        LEFT OUTER JOIN dbo.contact ON dbo.contact_address.contactid = dbo.contact.contactid
    WHERE 
        (
            client.name IS NOT NULL 
            AND client.name != ''
            AND @companyName != ''
            AND @companyName IS NOT NULL
            AND client.name LIKE '%' + @companyName + '%' 
        )
        AND 
        (
            (
                contact.dayphone IS NOT NULL 
                AND contact.dayphone != ''
                AND @primaryPhone != ''
                AND @primaryPhone IS NOT NULL
                AND contact.dayphone LIKE '%' + @primaryPhone + '%'
            )
            OR 
            (
                contact.fax IS NOT NULL 
                AND contact.fax != ''
                AND @primaryPhone != ''
                AND @primaryPhone IS NOT NULL
                AND contact.fax LIKE '%' + @primaryPhone + '%' 
            )
        )
        AND
        (
            @postalCode != ''
            AND @postalCode IS NOT NULL
            AND address.postalcode LIKE @postalCode + '%'
        )                       
        AND clientcontact.contacttypeid = 3 --primary contacts only

) AS tempTable

Answer 1

EDIT New Rules

                     |  Field = '' or NULL  |  Field != '' or NULL
---------------------+----------------------+-----------------------
Param  = '' or NULL  |    Include Record    |    Include Record
---------------------+----------------------+-----------------------
Param != '' or NULL  |    Exclude Record    |   Include if Match

WHERE 
    (
           @companyName = ''
        OR @companyName IS NULL
        OR client.name LIKE '%' + @companyName + '%' 
    )
    AND 
    (
        (
               @primaryPhone = ''
            OR @primaryPhone IS NULL
            OR contact.dayphone LIKE '%' + @primaryPhone + '%'
        )
        OR 
        (
               @primaryPhone = ''
            OR @primaryPhone IS NULL
            OR contact.fax LIKE '%' + @primaryPhone + '%' 
        )
    )
    AND
    (
           @postalCode = ''
        OR @postalCode IS NULL
        OR address.postalcode LIKE @postalCode + '%'
    )                       
    AND clientcontact.contacttypeid = 3 --primary contacts only