Guides/ReportDesign/5.0-Filters-tab.md
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@@ -65,9 +65,9 @@ The Filter Operator Drop-down lets you select your operator based on the data ty
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The "Blank" and "Param" checkboxes (see image above) allow you to control the filtering behavior in the report viewer. They do not affect the “Preview” tab of the report designer.
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**Blank Checkbox:** To use this, first set a “Filter Field” and then set an “Operator”. A value can be entered, but it is not required.
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-If “Blank” is checked, the filter will return data that matches the “Value(s)” dropdown/textbox and also data that has a blank value in that field.
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+If “Blank” is checked, the filter will return data that matches the “Value(s)” dropdown/textbox and also data that has a null value in that field.
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-In the example above, if “Blank” is checked and then viewed in the report viewer, then the user would see all of the data where the “ShipCity” begins with “s”, are blank, or are null.
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+In the example above, if “Blank” is checked and then viewed in the report viewer, then the user would see all of the data where the “ShipCity” begins with “s”, or are null.
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**Param Checkbox:** To use this, first set a “Filter Field”, set an “Operator”, and then set “Value(s)”, as in the previous example. This will display the filtered report in the report viewer and allow the user to change the filter value. If it is not checked, then the filter will not be visible to the end-user and the end-user will not be able to change the filter.
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