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POSQL Annual and Quarterly INNER JOIN
 

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    <p>I have a first ANNUAL table like</p> <pre><code>ID | Date | AField1 | AField2 1a | 21/8/2000 | xxx | xxx 1a | 21/8/2001 | xxx | xxx 1a | 21/8/2002 | xxx | xxx ... 1a | 21/8/2013 | xxx | xxx 1b | 16/2/2000 | xxx | xxx 1b | 16/2/2001 | xxx | xxx ... </code></pre> <p>and a second QUARTERLY table like</p> <pre><code>ID | Date | QField1 | QField2 1a | 1/1/2000 | xxx | xxx 1a | 1/3/2000 | xxx | xxx 1a | 1/6/2000 | xxx | xxx 1a | 1/9/2000 | xxx | xxx 1a | 1/1/2001 | xxx | xxx 1a | 1/3/2001 | xxx | xxx ... 1a | 1/9/2013 | xxx | xxx 1b | 1/1/2000 | xxx | xxx 1b | 1/3/2000 | xxx | xxx ... </code></pre> <p><strong>I am trying to write a query that would return info for each quarterly row and info from the last annual statement available corresponding to this quarter, for a given ID joining the two tables i.e:</strong></p> <pre><code>ID | AnnualDate | QuarterlyDate| AnnualField1 | QuarteryField2 | ... 1a | 21/8/1999 | 1/1/2000 | xxx | xxx | ... 1a | 21/8/1999 | 1/3/2000 | xxx | xxx | ... 1a | 21/8/1999 | 1/6/2000 | xxx | xxx | ... 1a | 21/8/2000 | 1/9/2000 | xxx | xxx | ... 1a | 21/8/2000 | 1/1/2001 | xxx | xxx | ... 1a | 21/8/2000 | 1/3/2001 | xxx | xxx | ... ... 1a | 21/8/2012 | 1/1/2013 | xxx | xxx | ... 1a | 21/8/2012 | 1/3/2013 | xxx | xxx | ... 1a | 21/8/2012 | 1/6/2013 | xxx | xxx | ... 1a | 21/8/2013 | 1/9/2013 | xxx | xxx | ... </code></pre> <p>so far, my SQL query looks like:</p> <pre><code>SELECT q.ID, q.Date, q.QField1, q.QField2, a.AField1, a.AField2 FROM tableQ AS q INNER JOIN tableA AS a ON q.ID = a.ID WHERE q.ID = ('678abc') ORDER BY ID, Date DESC </code></pre> <p>but the date relation is obviously missing.. It might look simple but I have been stuck on this for more than 3 hours now and I would appreciate any help. I tried the SELECT TOP or MAX HAVING or INNER JOIN with q.Date >= a.Date but unsuccessfully...</p> <p><strong>EDIT:</strong> Also a basic inner join like: Year(q.Date) = Year(a.Date) doesn't work as sometimes the last annual statement might be from the year before or even older.</p> <p>Thanks for reading</p>
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