SELECT * FROM t0 ASOF LEFT JOIN t1 ON (t1.x = t0.x) AND greater(('\0llall\0ll\0ll\0llall\0llall\0llall\0llall\0llall\0llall\0llall\0llall\0llall\0llall\0ll\0ll\0llall\0llall\0llall', x, x, y), t0.y, t1.y)