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MDEV-31237 Assertion `!(tab->select && tab->select->quick)' failed in make_join_readinfo

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The problem was a wrong assert. I changed it to match the code in
best_access_path().

The given test case was a bit tricky for the optimizer, which first
decided on using a index scan (because of force index), but then
test_if_skip_sort_order() decided to use range anyway to handle
distinct.
This commit is contained in:
Monty
2023-05-27 15:35:12 +03:00
parent 661141948f
commit aac88fc205
4 changed files with 52 additions and 1 deletions
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15
mysql-test/main/range.result
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@ -3824,5 +3824,20 @@ id MIN(id)
8 8
DROP TABLE t1;
#
# MDEV-31237 Assertion `!(tab->select && tab->select->quick)' failed
# in make_join_readinfo
#
CREATE TABLE lineitem (l_orderkey int, l_linenumber int, l_receiptDATE date DEFAULT NULL, PRIMARY KEY (l_orderkey,l_linenumber), KEY i_l_receiptdate (l_receiptDATE), KEY i_l_orderkey (l_orderkey)) ENGINE=InnoDB;
INSERT INTO lineitem VALUES (291,1,'1994-06-23'),(291,2,'1994-06-19'),
(291,3,'1994-03-24'),(292,1,'1992-03-18'),(292,2,'1992-04-20');
EXPLAIN SELECT DISTINCT l_orderkey FROM lineitem FORCE KEY (i_l_orderkey, i_l_receiptdate) WHERE l_orderkey > 1 ORDER BY l_receiptdate;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE lineitem range i_l_orderkey i_l_orderkey 4 NULL 5 Using where; Using temporary; Using filesort
SELECT DISTINCT l_orderkey FROM lineitem FORCE KEY (i_l_orderkey, i_l_receiptdate) WHERE l_orderkey > 1 ORDER BY l_receiptdate;
l_orderkey
292
291
DROP TABLE lineitem;
#
# End of 11.0 tests
#