Title: With Secondary Indices, users can tag their data with values, and can later query across their tagged data with simple SQL-style queries.<p>The following query, for example, will select the first 20 keys tagged with country of ‘Germany’ and category of ‘bread’, ‘sausage’, or ‘beer’, sorted by category and name:<p>FROM food 
WHERE country_id='Germany' AND category_id IN ('bread', 'sausage', 'beer')
SORT BY category_id ASC, name_txt ASC
SLICE 1 TO 20
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