Adding upstream version 1:10.5.12.upstream/1%10.5.12upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 109 insertions, 0 deletions

diff --git a/mysql-test/main/sum_distinct-big.test b/mysql-test/main/sum_distinct-big.test
new file mode 100644
index 00000000..41aa5a44
--- /dev/null
+++ b/mysql-test/main/sum_distinct-big.test
@@ -0,0 +1,109 @@
+#
+# Various tests for SUM(DISTINCT ...)
+#
+
+--source include/big_test.inc
+# Test will take more than one hour with valgrind
+--source include/not_valgrind.inc
+--source include/have_innodb.inc
+--source include/have_sequence.inc
+
+set @save_tmp_table_size=@@tmp_table_size;
+set @save_max_heap_table_size=@@max_heap_table_size;
+
+#
+# Test the case when distinct values doesn't fit in memory and 
+# filesort is used (see uniques.cc:merge_walk)
+#
+
+set default_storage_engine=MYISAM;
+
+CREATE TABLE t1 (id INTEGER);
+CREATE TABLE t2 (id INTEGER);
+
+INSERT INTO t1 SELECT b.seq FROM seq_1_to_128,seq_1_to_1024 b;
+
+# Just test that AVG(DISTINCT) is there
+SELECT AVG(DISTINCT id) FROM t1 GROUP BY id % 13;
+SELECT SUM(DISTINCT id)/COUNT(DISTINCT id) FROM t1 GROUP BY id % 13;
+
+INSERT INTO t1 SELECT b.seq FROM seq_1_to_128,seq_1025_to_16384 b;
+INSERT INTO t2 SELECT b.seq FROM seq_1_to_128 a,seq_1_to_16384 b
+ORDER by (a.seq*0+b.seq)*rand();
+
+# SELECT '++++++++++++++++++++++++++++++++++++++++++++++++++';
+
+SELECT SUM(DISTINCT id) sm FROM t1;
+SELECT SUM(DISTINCT id) sm FROM t2;
+SELECT SUM(DISTINCT id) sm FROM t1 group by id % 13;
+
+# this limit for max_heap_table_size is set to force testing the case, when
+# all distinct sum values can not fit in memory and must be stored in a
+# temporary table
+
+SET max_heap_table_size=16384;
+
+# to check that max_heap_table_size was actually set (hard limit for minimum
+# max_heap_table_size is set in mysqld.cc):
+
+SHOW variables LIKE 'max_heap_table_size';
+
+SELECT SUM(DISTINCT id) sm FROM t1;
+SELECT SUM(DISTINCT id) sm FROM t2;
+SELECT SUM(DISTINCT id) sm FROM t1 GROUP BY id % 13;
+
+--echo # 
+--echo # Bug mdev-4063: SUM(DISTINCT...) with small'max_heap_table_size 
+--echo # (bug #56927)
+--echo # 
+
+SET max_heap_table_size=default;
+
+INSERT INTO t1 SELECT b.seq FROM seq_1_to_128,seq_16385_to_32768 b;
+TRUNCATE t2;
+INSERT INTO t2 SELECT b.seq FROM seq_1_to_128 a,seq_1_to_32768 b
+ORDER BY (a.seq*0+b.seq)*rand();
+
+SELECT SUM(DISTINCT id) sm FROM t2;
+
+SET max_heap_table_size=16384;
+
+SELECT SUM(DISTINCT id) sm FROM t2;
+
+DROP TABLE t1;
+DROP TABLE t2;
+
+SET @@tmp_table_size=@save_tmp_table_size;
+SET @@max_heap_table_size=@save_max_heap_table_size;
+
+--echo #
+--echo # MDEV-4311: COUNT(DISTINCT...) requiring a file for UNIQUE (bug #68749)
+--echo #
+CREATE TABLE t2 (id INTEGER) ENGINE=InnoDB;
+
+BEGIN;
+INSERT INTO t2 SELECT b.seq FROM seq_1_to_128 a, seq_1_to_16384 b
+ORDER BY b.seq*rand();
+INSERT INTO t2 VALUE(NULL);
+
+--echo # With default tmp_table_size / max_heap_table_size
+SELECT SQL_NO_CACHE count(DISTINCT id) sm FROM t2;
+
+set @@tmp_table_size=1024*256;
+
+--echo # With reduced tmp_table_size
+SELECT SQL_NO_CACHE count(DISTINCT id) sm FROM t2;
+
+set @@tmp_table_size=@save_tmp_table_size;
+SET @@max_heap_table_size=1024*256;
+
+--echo # With reduced max_heap_table_size
+SELECT SQL_NO_CACHE count(DISTINCT id) sm FROM t2;
+
+SET @@max_heap_table_size=@save_max_heap_table_size;
+
+--echo # Back to default tmp_table_size / max_heap_table_size
+SELECT SQL_NO_CACHE count(DISTINCT id) sm FROM t2;
+COMMIT;
+
+DROP TABLE t2;