mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-14 03:25:15 +00:00
44 lines
2.3 KiB
SQL
44 lines
2.3 KiB
SQL
SELECT '*** In-memory aggregation.';
|
|
|
|
SET max_rows_to_group_by = 100000;
|
|
SET max_block_size = 100001;
|
|
SET group_by_overflow_mode = 'any';
|
|
|
|
SELECT '**** totals_mode = after_having_auto';
|
|
SET totals_mode = 'after_having_auto';
|
|
SELECT intDiv(number, 2) AS k, count(), argMax(toString(number), number) FROM (SELECT number FROM system.numbers LIMIT 500000) GROUP BY k WITH TOTALS ORDER BY k LIMIT 10;
|
|
|
|
SELECT '**** totals_mode = after_having_inclusive';
|
|
SET totals_mode = 'after_having_inclusive';
|
|
SELECT intDiv(number, 2) AS k, count(), argMax(toString(number), number) FROM (SELECT number FROM system.numbers LIMIT 500000) GROUP BY k WITH TOTALS ORDER BY k LIMIT 10;
|
|
|
|
SELECT '**** totals_mode = after_having_exclusive';
|
|
SET totals_mode = 'after_having_exclusive';
|
|
SELECT intDiv(number, 2) AS k, count(), argMax(toString(number), number) FROM (SELECT number FROM system.numbers LIMIT 500000) GROUP BY k WITH TOTALS ORDER BY k LIMIT 10;
|
|
|
|
SELECT '**** totals_mode = before_having';
|
|
SET totals_mode = 'before_having';
|
|
SELECT intDiv(number, 2) AS k, count(), argMax(toString(number), number) FROM (SELECT number FROM system.numbers LIMIT 500000) GROUP BY k WITH TOTALS ORDER BY k LIMIT 10;
|
|
|
|
|
|
SELECT '*** External aggregation.';
|
|
|
|
SET max_bytes_before_external_group_by=1000000;
|
|
SET group_by_two_level_threshold = 100000;
|
|
|
|
SELECT '**** totals_mode = after_having_auto';
|
|
SET totals_mode = 'after_having_auto';
|
|
SELECT intDiv(number, 2) AS k, count(), argMax(toString(number), number) FROM (SELECT number FROM system.numbers LIMIT 500000) GROUP BY k WITH TOTALS ORDER BY k LIMIT 10;
|
|
|
|
SELECT '**** totals_mode = after_having_inclusive';
|
|
SET totals_mode = 'after_having_inclusive';
|
|
SELECT intDiv(number, 2) AS k, count(), argMax(toString(number), number) FROM (SELECT number FROM system.numbers LIMIT 500000) GROUP BY k WITH TOTALS ORDER BY k LIMIT 10;
|
|
|
|
SELECT '**** totals_mode = after_having_exclusive';
|
|
SET totals_mode = 'after_having_exclusive';
|
|
SELECT intDiv(number, 2) AS k, count(), argMax(toString(number), number) FROM (SELECT number FROM system.numbers LIMIT 500000) GROUP BY k WITH TOTALS ORDER BY k LIMIT 10;
|
|
|
|
SELECT '**** totals_mode = before_having';
|
|
SET totals_mode = 'before_having';
|
|
SELECT intDiv(number, 2) AS k, count(), argMax(toString(number), number) FROM (SELECT number FROM system.numbers LIMIT 500000) GROUP BY k WITH TOTALS ORDER BY k LIMIT 10;
|