File: multi_update2.result

package info (click to toggle)
mysql-5.5 5.5.60-0%2Bdeb8u1
  • links: PTS, VCS
  • area: main
  • in suites: jessie
  • size: 201,012 kB
  • sloc: cpp: 648,063; ansic: 552,041; perl: 48,017; pascal: 25,099; sh: 15,065; yacc: 13,088; cs: 4,647; xml: 4,178; sql: 3,380; makefile: 1,368; lex: 639; awk: 54
file content (25 lines) | stat: -rw-r--r-- 1,016 bytes parent folder | download | duplicates (13)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
DROP TABLE IF EXISTS t1,t2;
CREATE TABLE t1 ( a INT NOT NULL, b INT NOT NULL) ;
# The protocolling of many inserts into t1 is suppressed.
ALTER TABLE t1 ADD INDEX i1(a);
DELETE FROM t1 WHERE a > 2000000;
CREATE TABLE t2 LIKE t1;
INSERT INTO t2 SELECT * FROM t1;
SELECT 't2 rows before small delete', COUNT(*) FROM t1;
t2 rows before small delete	COUNT(*)
t2 rows before small delete	2000000
DELETE t1,t2 FROM t1,t2 WHERE t1.b=t2.a AND t1.a < 2;
SELECT 't2 rows after small delete', COUNT(*) FROM t2;
t2 rows after small delete	COUNT(*)
t2 rows after small delete	1999999
SELECT 't1 rows after small delete', COUNT(*) FROM t1;
t1 rows after small delete	COUNT(*)
t1 rows after small delete	1999999
DELETE t1,t2 FROM t1,t2 WHERE t1.b=t2.a AND t1.a < 100*1000;
SELECT 't2 rows after big delete', COUNT(*) FROM t2;
t2 rows after big delete	COUNT(*)
t2 rows after big delete	1900001
SELECT 't1 rows after big delete', COUNT(*) FROM t1;
t1 rows after big delete	COUNT(*)
t1 rows after big delete	1900001
DROP TABLE t1,t2;