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  1. PO
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    <p>I agre with a comment, you should review the design for alternatives.</p> <p>In terms of the existing design there appear to be two options to me...<br> 1. Build up the query string in VBA, then execute it<br> 2. Use a CASE statement in the WHERE clause </p> <p>I admit I don't know Access's syntax, so here is SQL Server syntax for your inspiration...</p> <pre><code>WHERE CASE NumberOfCycles WHEN 1 THEN s1 WHEN 2 THEN s2 WHEN 3 THEN s3 WHEN 4 THEN s4 END IS NOT NULL </code></pre> <p>This, however, is not efficient as it is scanning every record and not able to make use of indexes, etc.</p> <p><strong>EDIT</strong></p> <p>Also, note that based on your example and actual question, if you ever have "NumberOfCycles = 3" but records where s3 and s4 are populated, both records are returned.</p> <p>I believe you would be advised to have a field "cycle" which describes the cycle at which the data was populated.</p> <pre><code> Cycle | Number Of Cycles | s1 | s2 | s3 | s4 1 | 4 | 0 | - | - | - 2 | 4 | 0 | 1 | - | - 3 | 4 | 0 | 1 | 0 | - 4 | 4 | 0 | 1 | 0 | 1 </code></pre> <p>Then you just need to search for "Cycle = NumberOfCycles"</p> <p><strong>EDIT</strong></p> <p>Apparently Access has a horrible SWITCH statement...</p> <pre><code>WHERE SWITCH( NumberOfCycles=1, s1, NumberOfCycles=2, s2, NumberOfCycles=3, s3, NumberOfCycles=4, s4 ) IS NOT NULL </code></pre> <p>Or you can expand to a horrible OR statement...</p> <pre><code>WHERE (NumberOfCycles=1 AND S1 IS NOT NULL) OR (NumberOfCycles=2 AND S2 IS NOT NULL) OR (NumberOfCycles=3 AND S3 IS NOT NULL) OR (NumberOfCycles=4 AND S4 IS NOT NULL) </code></pre>
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    1. POHow do you get SQL to add a variable to a field name in a where clause?
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    1. USMatBailie
    1. USMatBailie
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    1. COCase statement will only work on passthrough query to SQL Server, not in MS Access.
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