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POHow can I improve this Mailing Address SQL Server SELECT Statement?
 

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  1. POHow can I improve this Mailing Address SQL Server SELECT Statement?
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    <p>How can I format a Mailing Address so that I always push all non-null rows to the top? That is, I want to convert an address from the structure below to a mailing address.</p> <p>Here is the structure:</p> <pre><code>[Line1] [varchar](50) NULL, [Line2] [varchar](50) NULL, [Line3] [varchar](50) NULL, [City] [varchar](50) NULL, [State] [varchar] (2) NULL, [PostalCode] [varchar](50) NULL, </code></pre> <p>Here is some sample data:</p> <pre><code>Line1= Line2=123 Some Address Line3= City=Royal Oak State=MI ZIP=45673-2312 </code></pre> <p>Here is what the result should look like <strong>(4 distinct or separate fields should be returned)</strong>: </p> <pre><code>MailAddress1=123 Some Address MailAddress2=ROYAL OAK MI 45673-2312 MailAddress3= MailAddress4= </code></pre> <p>I am using SQL Server 2005.</p> <p>Someone wrote this logic in our company and it just seemed to complex (Note: this is not the whole SELECT statement):</p> <pre><code>,CASE WHEN eai.Line1 IS NULL OR eai.Line1 = '' THEN CASE WHEN eai.Line2 IS NULL OR eai.Line2 = '' THEN CASE WHEN eai.Line3 IS NULL OR eai.Line3 = '' THEN ISNULL(LTRIM(RTRIM(eai.City)),'') + ' ' + ISNULL(LTRIM(RTRIM(eai.RegionCode)),'') + ' ' + ISNULL(LTRIM(RTRIM(eai.PostalCode)),'') ELSE eai.Line3 END ELSE eai.Line2 END ELSE eai.Line1 END ,CASE WHEN eai.Line1 IS NULL OR eai.Line1 = '' THEN CASE WHEN eai.Line3 IS NULL OR eai.Line3 = '' THEN ISNULL(LTRIM(RTRIM(eai.City)),'') + ' ' + ISNULL(LTRIM(RTRIM(eai.RegionCode)),'') + ' ' + ISNULL(LTRIM(RTRIM(eai.PostalCode)),'') ELSE eai.Line3 END ELSE CASE WHEN eai.Line2 IS NULL OR eai.Line2 = '' THEN CASE WHEN eai.Line3 IS NULL OR eai.Line3 = '' THEN ISNULL(LTRIM(RTRIM(eai.City)),'') + ' ' + ISNULL(LTRIM(RTRIM(eai.RegionCode)),'') + ' ' + ISNULL(LTRIM(RTRIM(eai.PostalCode)),'') ELSE eai.Line3 END ELSE eai.Line2 END END ,CASE WHEN eai.Line1 IS NULL OR eai.Line1 = '' THEN CASE WHEN eai.Line2 IS NULL OR eai.Line2 = '' THEN NULL ELSE CASE WHEN eai.Line3 IS NULL OR eai.Line3 = '' THEN NULL ELSE ISNULL(LTRIM(RTRIM(eai.City)),'') + ' ' + ISNULL(LTRIM(RTRIM(eai.RegionCode)),'') + ' ' + ISNULL(LTRIM(RTRIM(eai.PostalCode)),'') END END ELSE CASE WHEN eai.Line2 IS NULL OR eai.Line2 = '' THEN CASE WHEN eai.Line3 IS NULL OR eai.Line3 = '' THEN NULL ELSE ISNULL(LTRIM(RTRIM(eai.City)),'') + ' ' + ISNULL(LTRIM(RTRIM(eai.RegionCode)),'') + ' ' + ISNULL(LTRIM(RTRIM(eai.PostalCode)),'') END ELSE CASE WHEN eai.Line3 IS NULL OR eai.Line3 = '' THEN ISNULL(LTRIM(RTRIM(eai.City)),'') + ' ' + ISNULL(LTRIM(RTRIM(eai.RegionCode)),'') + ' ' + ISNULL(LTRIM(RTRIM(eai.PostalCode)),'') ELSE eai.Line3 END END END ,CASE WHEN eai.Line2 IS NOT NULL AND eai.Line2 &lt;&gt; '' AND eai.Line3 IS NOT NULL AND eai.Line3 &lt;&gt; '' THEN eai.City + ' ' + eai.RegionCode + ' ' + eai.PostalCode ELSE NULL END </code></pre>
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    1. USGerhard Weiss
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    1. COGerhard. I hope that you don't mind that I reformatted the question to be a bit simpler.
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      1. USMark Brittingham
    2. COI like it, it is easier but I always thing about adding key words to the title so it will get indexed up better by the search engines (google, kumo, etc.). I will add back in 'Mailing Address'.
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      1. USGerhard Weiss
    3. COYes - your final version *is* better in the end. And thanks for selecting my entry as the "Answer."
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      1. USMark Brittingham
 

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