In operator without (). (Error 2429)

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When coding an SQL statement that includes the In operator, you must surround the list of items to test with parentheses. For example, to see if a value is one of a set of values, you could use the following code in the WHERE clause of an SQL query:

  WHERE Region In ('TX', 'CA', 'WA')

This code tests to see if the Region field contains any of the above abbreviations, which represent Texas, California, and Washington.