Yes. If the standard approach of sending one facet per column does not meet your needs, you can also include an arbitrary number of facets in a single column called
facets in your data feed.
Use the following format for the values in the column:
key1: value1 | key2: value2
The keys and values should be separate a colon (:) and the different key/value pairs should be separated with a pipe symbol (|).
If a colon (:) or pipe (|) is a part of a key or value, then it should be escaped with a backslash (\) like so:
key\:1: val\|ue1 | key2: value2
This will be parsed into
('key:1', 'val|ue1') and