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After you have aggregated a fact to form the foundations of a metric, you can use MAQL syntax to add filters to your metric definition. Filters are optional features that can be used to narrow the set of data from which a metric is computed. With logical expressions, you can also combine two or more filters within a single metric definition.

The basic syntax for filters uses the word WHERE to introduce the filter expression:

SELECT ... WHERE ...

This section will explore several types of syntax for customizing metric filters:

  • Special operators for defining filters
    • Example: SELECT Revenues WHERE Year = 2006
  • Time macros for filtering for floating time periods:
    • Example: SELECT Payment WHERE Date = THIS – 1
  • Logical expressions for combining filters
    • Example: SELECT Revenues WHERE Year = 2006 AND Month = 5
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