DROP TABLE IF EXISTS summing_merge_tree; set allow_deprecated_syntax_for_merge_tree=1; CREATE TABLE summing_merge_tree (d Date, a String, x UInt32, y UInt64, z Float64) ENGINE = SummingMergeTree(d, a, 8192); INSERT INTO summing_merge_tree VALUES ('2000-01-01', 'Hello', 1, 2, 3); INSERT INTO summing_merge_tree VALUES ('2000-01-01', 'Hello', 4, 5, 6); INSERT INTO summing_merge_tree VALUES ('2000-01-01', 'Goodbye', 1, 2, 3); OPTIMIZE TABLE summing_merge_tree; OPTIMIZE TABLE summing_merge_tree; OPTIMIZE TABLE summing_merge_tree; SELECT * FROM summing_merge_tree ORDER BY d, a, x, y, z; DROP TABLE summing_merge_tree; CREATE TABLE summing_merge_tree (d Date, a String, x UInt32, y UInt64, z Float64) ENGINE = SummingMergeTree(d, a, 8192, (y, z)); INSERT INTO summing_merge_tree VALUES ('2000-01-01', 'Hello', 1, 2, 3); INSERT INTO summing_merge_tree VALUES ('2000-01-01', 'Hello', 4, 5, 6); INSERT INTO summing_merge_tree VALUES ('2000-01-01', 'Goodbye', 1, 2, 3); OPTIMIZE TABLE summing_merge_tree; OPTIMIZE TABLE summing_merge_tree; OPTIMIZE TABLE summing_merge_tree; SELECT * FROM summing_merge_tree ORDER BY d, a, x, y, z; DROP TABLE summing_merge_tree; -- DROP TABLE IF EXISTS summing; CREATE TABLE summing (p Date, k UInt64, s UInt64) ENGINE = SummingMergeTree(p, k, 1); INSERT INTO summing (k, s) VALUES (0, 1); INSERT INTO summing (k, s) VALUES (0, 1), (666, 1), (666, 0); OPTIMIZE TABLE summing PARTITION 197001; SELECT k, s FROM summing ORDER BY k; DROP TABLE summing;