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lucene - Multiple ranges in a facet in solr

How could you format a Solr facet query to include two page view ranges?

The following will only return the 200 TO 250 range and nothing from the 500 to 550 range.

<str name="fq">pageviews:[200 TO 250] OR [500 TO 550]</str>

I'm keen to get the number of records matching people with pages views between 200 and 250 and between 500 and 550.

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You can also use it as shown below.

fq=pageviews:([200 TO 250] OR [500 TO 550])

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