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View File Name :
sum_distinct-big.result
DROP TABLE IF EXISTS t1, t2; CREATE TABLE t1 (id INTEGER); CREATE TABLE t2 (id INTEGER); INSERT INTO t1 (id) VALUES (1), (1), (1),(1); INSERT INTO t1 (id) SELECT id FROM t1; /* 8 */ INSERT INTO t1 (id) SELECT id FROM t1; /* 12 */ INSERT INTO t1 (id) SELECT id FROM t1; /* 16 */ INSERT INTO t1 (id) SELECT id FROM t1; /* 20 */ INSERT INTO t1 (id) SELECT id FROM t1; /* 24 */ INSERT INTO t1 SELECT id+1 FROM t1; INSERT INTO t1 SELECT id+2 FROM t1; INSERT INTO t1 SELECT id+4 FROM t1; INSERT INTO t1 SELECT id+8 FROM t1; INSERT INTO t1 SELECT id+16 FROM t1; INSERT INTO t1 SELECT id+32 FROM t1; INSERT INTO t1 SELECT id+64 FROM t1; INSERT INTO t1 SELECT id+128 FROM t1; INSERT INTO t1 SELECT id+256 FROM t1; INSERT INTO t1 SELECT id+512 FROM t1; SELECT AVG(DISTINCT id) FROM t1 GROUP BY id % 13; AVG(DISTINCT id) 513.5000 508.0000 509.0000 510.0000 511.0000 512.0000 513.0000 514.0000 515.0000 516.0000 517.0000 511.5000 512.5000 SELECT SUM(DISTINCT id)/COUNT(DISTINCT id) FROM t1 GROUP BY id % 13; SUM(DISTINCT id)/COUNT(DISTINCT id) 513.5000 508.0000 509.0000 510.0000 511.0000 512.0000 513.0000 514.0000 515.0000 516.0000 517.0000 511.5000 512.5000 INSERT INTO t1 SELECT id+1024 FROM t1; INSERT INTO t1 SELECT id+2048 FROM t1; INSERT INTO t1 SELECT id+4096 FROM t1; INSERT INTO t1 SELECT id+8192 FROM t1; INSERT INTO t2 SELECT id FROM t1 ORDER BY id*rand(); SELECT SUM(DISTINCT id) sm FROM t1; sm 134225920 SELECT SUM(DISTINCT id) sm FROM t2; sm 134225920 SELECT SUM(DISTINCT id) sm FROM t1 group by id % 13; sm 10327590 10328851 10330112 10331373 10332634 10317510 10318770 10320030 10321290 10322550 10323810 10325070 10326330 SET max_heap_table_size=16384; SHOW variables LIKE 'max_heap_table_size'; Variable_name Value max_heap_table_size 16384 SELECT SUM(DISTINCT id) sm FROM t1; sm 134225920 SELECT SUM(DISTINCT id) sm FROM t2; sm 134225920 SELECT SUM(DISTINCT id) sm FROM t1 GROUP BY id % 13; sm 10327590 10328851 10330112 10331373 10332634 10317510 10318770 10320030 10321290 10322550 10323810 10325070 10326330 DROP TABLE t1; DROP TABLE t2;