File: bench_count_distinct.test

package info (click to toggle)
mysql-dfsg-4.1 4.1.11a-4sarge8
  • links: PTS
  • area: main
  • in suites: sarge
  • size: 86,724 kB
  • ctags: 78,396
  • sloc: ansic: 380,120; cpp: 348,266; sh: 32,501; tcl: 30,484; perl: 20,873; yacc: 5,447; java: 4,610; makefile: 4,406; xml: 3,857; pascal: 1,795; awk: 1,338; asm: 1,064; sed: 772; sql: 503
file content (20 lines) | stat: -rw-r--r-- 396 bytes parent folder | download
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
#
# Test of count(distinct ..)
#

--disable_warnings
drop table if exists t1;
--enable_warnings
create table t1(n int not null, key(n)) delay_key_write = 1;
let $1=100;
disable_query_log;
while ($1)
{
 eval insert into t1 values($1);
 eval insert into t1 values($1);
 dec $1;
}
enable_query_log;
select count(distinct n) from t1;
explain extended select count(distinct n) from t1;
drop table t1;