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Boolean expression strings can be used when filtering
collections or tables using operations, such as
find()
and remove()
. The
expression is evaluated once for each document or row.
The following example of a boolean expression string uses
find()
to search for all documents with a
“red” color attribute from the collection
“apples”:
apples.find('color = "red"').execute()
Similarly, to delete all red apples:
apples.remove('color = "red"').execute()