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    <p>I would start with a plain SELECT query to figure out the WHERE clause. Once you get that working correctly, convert it to a GROUP BY query. </p> <p>So see if this one targets the correct records:</p> <pre><code>PARAMETERS [Start Date] DateTime, [End Date] DateTime; SELECT t.field1, t.field2, t.field3, t.column_date FROM table1 AS t WHERE t.field1 Like '*xyz' AND ( (t.column_date Between [Start Date] And [End Date]) OR ([Start Date] Is Null And t.column_date = [End Date]) OR (t.column_date = [Start Date] And [End Date] Is Null) OR ([Start Date] Is Null And [End Date] Is Null) ); </code></pre> <p>Assuming that first query returns the correct rows, I think this GROUP BY query may give you what you want.</p> <pre><code>PARAMETERS [Start Date] DateTime, [End Date] DateTime; SELECT t.column_date, t.field1, t.field2, sum(t.field3) FROM table1 AS t WHERE t.field1 Like '*xyz' AND ( (t.column_date Between [Start Date] And [End Date]) OR ([Start Date] Is Null And t.column_date = [End Date]) OR (t.column_date = [Start Date] And [End Date] Is Null) OR ([Start Date] Is Null And [End Date] Is Null) ) GROUP BY t.column_date, t.field1, t.field2; </code></pre> <p>If running this query from classic ASP, you will need to substitute the ANSI wild card character <code>%</code> for the Access-style <code>*</code> wild card.</p> <pre><code>t.field1 Like '%xyz' </code></pre> <p>Or consider using <code>ALike</code> and the ANSI wild card instead of <code>Like</code>. That way the query will always operate the same without needing to switch wild cards.</p> <pre><code>t.field1 ALike '%xyz' </code></pre> <p>Also, with classic ASP, run the query from an ADO Command object, and supply values for the parameters.</p>
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    1. COMany thanks @HansUp. This is exactly what I was looking for.
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    2. COI have a problem executing this in asp. when I write this sql code in access and try to simply just execute it in classic asp and leave both the text boxes(for parameters) as blanks, i get error. Is it because null parameters are not allowed in text boxes of asp or something else? Please note I'm very new to asp also. So I just would like to know if I'm making mistakes or it's not possible at all.
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    3. COSee updated answer. The classic ASP angle is important information which deserves to be part of your question. I added a tag.
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