Array selection:
Automatically groups by item[*]
:
kind
items[*].volumeInfo.title
items[*].searchInfo.textSnippet
Explicitly group by item[*]
:
kind
items[*](volumeInfo.title searchInfo.textSnippet)
filter ::= expression operator value_or_expression
value_or_expression ::= value | expression
value ::= string | number | boolean | "null" | array | object # parse as JSON
operator ::= "=" | ">" | ">=" | "<" | "<="
'