Meta search can be done by specifying a meta tag followed by a column,
for example author:foo
. You can get refined meta results too,
for example author:+"Foo"
and +author:"Foo"
will produce
same output. Searching author:"Foo Bar"
is equivalent to
author:"Foo" author:"Bar"
.
All case-sensitivity, full and partial word rules apply with the meta data search.
The meta tag name is never case-sensitive and is always exact.