ydb/yt/yql/tests/sql/suites/aggregate/input_compare.txt

{"key"="1";"subkey"="";"value"=""};
{"key"="1";"subkey"="";"value"="bbb"};
{"key"="1";"subkey"="aaa";"value"=""};
{"key"="1";"subkey"="aaa";"value"="bbb"};
{"key"="2";"subkey"="";"value"="bbb"};
{"key"="2";"subkey"="aaa";"value"=""};
{"key"="2";"subkey"="aaa";"value"="bbb"};
{"key"="3";"subkey"="aaa";"value"=""};
{"key"="3";"subkey"="aaa";"value"="bbb"};
{"key"="3";"subkey"="ccc";"value"=""};