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04.11.2008 at 10:55AM PDT, ID: 23315960
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Parameter query using iif statement with nulls does not return values

Asked by jclemo in Access Forms, Microsoft Access Database, SQL Query Syntax

Tags: Microsoft, Microsoft Access, 2003, Using as a front end for SQL server tables

Hello, I have a parameter query which is filtered by a form combo box.  There are 4 tables with appropriate relationships and joins in the query.  I have the following criteria in one of my fields.  Like (IIf(IsNull([Forms]![Filter Swichboard]![cmbBusinessUnit].[text]),"*",[Forms]![Filter Swichboard]![cmbBusinessUnit].[text])).

If the combo box is empty this filter returns ALL records unless the Business_Unit field IS NULL.  So I tried Like (IIf(IsNull([Forms]![Filter Swichboard]![cmbBusinessUnit].[text]),Like "*" or Is Null,[Forms]![Filter Swichboard]![cmbBusinessUnit].[text])).  Which then returns no records.  

What I am trying to do is when the combo box has no value return ALL records from the query including where the Business_Unit field is null.  Help is greatly appreciated.  

I also tried Like (IIf(IsNull([Forms]![Filter Swichboard]![cmbBusinessUnit].[text]),"*",[Forms]![Filter Swichboard]![cmbBusinessUnit].[text])) Or Is Null which then returns all records in the filter and records which are NULL.  thanksStart Free Trial
 
Keywords: Parameter query using iif statement wit…
Title
1 iif function
2 Having difficulties with a Calculated fiel…
3 Using IIF IsNull In VB
4 IIF query
5 IIF Criteria
6 Query does not accept conditional Like…
 
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[+][-]04.11.2008 at 11:01AM PDT, ID: 21336613

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Zones: Access Forms, Microsoft Access Database, SQL Query Syntax
Tags: Microsoft, Microsoft Access, 2003, Using as a front end for SQL server tables
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Solution Provided By: capricorn1
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[+][-]04.11.2008 at 11:02AM PDT, ID: 21336618

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[+][-]04.11.2008 at 12:27PM PDT, ID: 21337381

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[+][-]04.11.2008 at 12:28PM PDT, ID: 21337395

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[+][-]04.11.2008 at 12:28PM PDT, ID: 21337398

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[+][-]04.11.2008 at 12:30PM PDT, ID: 21337420

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[+][-]04.11.2008 at 12:34PM PDT, ID: 21337445

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[+][-]04.11.2008 at 12:40PM PDT, ID: 21337497

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[+][-]04.11.2008 at 12:51PM PDT, ID: 21337591

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[+][-]04.11.2008 at 01:25PM PDT, ID: 21337901

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[+][-]04.11.2008 at 07:59PM PDT, ID: 21339653

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[+][-]04.11.2008 at 10:28PM PDT, ID: 21339981

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