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nexedi
MariaDB
Commits
aaa47b88
Commit
aaa47b88
authored
Oct 27, 2011
by
Igor Babaev
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Merge.
parents
08e9e6a7
2a3858d9
Changes
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3 changed files
with
52 additions
and
1 deletion
+52
-1
mysql-test/r/derived_view.result
mysql-test/r/derived_view.result
+23
-0
mysql-test/t/derived_view.test
mysql-test/t/derived_view.test
+24
-0
sql/item.cc
sql/item.cc
+5
-1
No files found.
mysql-test/r/derived_view.result
View file @
aaa47b88
...
...
@@ -1764,4 +1764,27 @@ x
set optimizer_switch= @save_optimizer_switch;
DROP VIEW v3;
DROP TABLE t1,t2,t3;
#
# Bug #874035: view as an inner table of a materialized derived
#
CREATE TABLE t2 (a int NOT NULL);
INSERT INTO t2 VALUES (7), (4);
CREATE TABLE t1 (b int NOT NULL);
INSERT INTO t1 VALUES (5), (7);
CREATE ALGORITHM=MERGE VIEW v1 AS SELECT * FROM t1;
SET SESSION optimizer_switch='derived_merge=off';
PREPARE st1 FROM
'SELECT * FROM (SELECT * FROM t2 LEFT JOIN v1 ON t2.a = v1.b) AS t';
EXECUTE st1;
a b
7 7
4 NULL
EXECUTE st1;
a b
7 7
4 NULL
DEALLOCATE PREPARE st1;
DROP VIEW v1;
DROP TABLE t1,t2;
SET SESSION optimizer_switch='derived_merge=on';
set optimizer_switch=@exit_optimizer_switch;
mysql-test/t/derived_view.test
View file @
aaa47b88
...
...
@@ -1166,5 +1166,29 @@ set optimizer_switch= @save_optimizer_switch;
DROP
VIEW
v3
;
DROP
TABLE
t1
,
t2
,
t3
;
--
echo
#
--
echo
# Bug #874035: view as an inner table of a materialized derived
--
echo
#
CREATE
TABLE
t2
(
a
int
NOT
NULL
);
INSERT
INTO
t2
VALUES
(
7
),
(
4
);
CREATE
TABLE
t1
(
b
int
NOT
NULL
);
INSERT
INTO
t1
VALUES
(
5
),
(
7
);
CREATE
ALGORITHM
=
MERGE
VIEW
v1
AS
SELECT
*
FROM
t1
;
SET
SESSION
optimizer_switch
=
'derived_merge=off'
;
PREPARE
st1
FROM
'SELECT * FROM (SELECT * FROM t2 LEFT JOIN v1 ON t2.a = v1.b) AS t'
;
EXECUTE
st1
;
EXECUTE
st1
;
DEALLOCATE
PREPARE
st1
;
DROP
VIEW
v1
;
DROP
TABLE
t1
,
t2
;
SET
SESSION
optimizer_switch
=
'derived_merge=on'
;
# The following command must be the last one the file
set
optimizer_switch
=@
exit_optimizer_switch
;
sql/item.cc
View file @
aaa47b88
...
...
@@ -7321,7 +7321,11 @@ bool Item_direct_view_ref::fix_fields(THD *thd, Item **reference)
((
*
ref
)
->
fix_fields
(
thd
,
ref
)))
return
TRUE
;
return
Item_direct_ref
::
fix_fields
(
thd
,
reference
);
if
(
Item_direct_ref
::
fix_fields
(
thd
,
reference
))
return
TRUE
;
if
(
view
->
table
&&
view
->
table
->
maybe_null
)
maybe_null
=
TRUE
;
return
FALSE
;
}
/*
...
...
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