LIMIT should restrict the output result and not the query whose result
set is aggregated. when using aggregate the output is guarantied to
be only one row long. since LIMIT accepts only none negative numbers,
it has no effect and can be ignored.
Fixes#2028
Tests: The issue described Testcase , UnitTests.
Signed-off-by: Eliran Sinvani <eliransin@scylladb.com>
Message-Id: <6c235376c81f052020e2ed23d0a3d071b36d4415.1534416997.git.eliransin@scylladb.com>