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nexedi
MariaDB
Commits
772aa695
Commit
772aa695
authored
Dec 10, 2009
by
Georgi Kodinov
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merge
parents
16d15270
3c434c93
Changes
3
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3 changed files
with
19 additions
and
1 deletion
+19
-1
mysql-test/r/order_by.result
mysql-test/r/order_by.result
+9
-0
mysql-test/t/order_by.test
mysql-test/t/order_by.test
+9
-0
sql/sql_select.cc
sql/sql_select.cc
+1
-1
No files found.
mysql-test/r/order_by.result
View file @
772aa695
...
...
@@ -1463,6 +1463,15 @@ id select_type table type possible_keys key key_len ref rows Extra
SELECT 1 AS col FROM t1 WHERE a=2 AND (c=10 OR c IS NULL) ORDER BY c;
col
1
# Must use ref-or-null on the a_c index
EXPLAIN
SELECT 1 AS col FROM t1 WHERE a=2 AND (c=10 OR c IS NULL) ORDER BY c DESC;
id select_type table type possible_keys key key_len ref rows Extra
x x x ref_or_null a_c,a x x x x x
# Must return 1 row
SELECT 1 AS col FROM t1 WHERE a=2 AND (c=10 OR c IS NULL) ORDER BY c DESC;
col
1
DROP TABLE t1;
End of 5.0 tests
CREATE TABLE t2 (a varchar(32), b int(11), c float, d double,
...
...
mysql-test/t/order_by.test
View file @
772aa695
...
...
@@ -886,6 +886,15 @@ SELECT 1 AS col FROM t1 WHERE a=2 AND (c=10 OR c IS NULL) ORDER BY c;
--
echo
# Must return 1 row
SELECT
1
AS
col
FROM
t1
WHERE
a
=
2
AND
(
c
=
10
OR
c
IS
NULL
)
ORDER
BY
c
;
# part 2 of the problem : DESC test cases
--
echo
# Must use ref-or-null on the a_c index
--
replace_column
1
x
2
x
3
x
6
x
7
x
8
x
9
x
10
x
EXPLAIN
SELECT
1
AS
col
FROM
t1
WHERE
a
=
2
AND
(
c
=
10
OR
c
IS
NULL
)
ORDER
BY
c
DESC
;
--
echo
# Must return 1 row
SELECT
1
AS
col
FROM
t1
WHERE
a
=
2
AND
(
c
=
10
OR
c
IS
NULL
)
ORDER
BY
c
DESC
;
DROP
TABLE
t1
;
...
...
sql/sql_select.cc
View file @
772aa695
...
...
@@ -13487,7 +13487,7 @@ test_if_skip_sort_order(JOIN_TAB *tab,ORDER *order,ha_rows select_limit,
select
->
quick
=
tmp
;
}
}
else
if
(
tab
->
type
!=
JT_NEXT
&&
else
if
(
tab
->
type
!=
JT_NEXT
&&
tab
->
type
!=
JT_REF_OR_NULL
&&
tab
->
ref
.
key
>=
0
&&
tab
->
ref
.
key_parts
<=
used_key_parts
)
{
/*
...
...
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