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Changed a rule to be cost based in test_if_cheaper_ordering

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- Simplified test by setting read_time=DBL_MAX at start of loop if
  FORCE INDEX is used
- No need to test for 'group by' as the cost compare should handle it.
- Only one test change where index scan was replaced with table scan
 (correct)
This commit is contained in:
Monty
2022-11-22 15:27:37 +02:00
committed by Sergei Petrunia
parent 1c88ac60cf
commit 0dd9ec97d0
2 changed files with 9 additions and 3 deletions
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2
mysql-test/suite/innodb/r/innodb_mysql.result
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@ -1193,7 +1193,7 @@ INSERT INTO t1 SELECT a + 32, MOD(a + 32, 20), 1 FROM t1;
INSERT INTO t1 SELECT a + 64, MOD(a + 64, 20), 1 FROM t1;
EXPLAIN SELECT b, SUM(c) FROM t1 GROUP BY b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index NULL b 5 NULL 128
1 SIMPLE t1 ALL NULL NULL NULL NULL 128 Using temporary; Using filesort
EXPLAIN SELECT SQL_BIG_RESULT b, SUM(c) FROM t1 GROUP BY b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 128 Using filesort