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MDEV-13020 Server crashes in Item_func_nextval::val_int...

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The problem was that we didn't check on open of sequence if the table is a view, which is not allowed.
We are now generating a proper error message for this case.
This commit is contained in:
Monty
2017-07-06 10:59:45 +03:00
parent 58dd72f18c
commit 3f32743294
3 changed files with 62 additions and 3 deletions
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26
mysql-test/suite/sql_sequence/view.result Normal file
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@ -0,0 +1,26 @@
create sequence s1;
create view v1 as select * from s1;
create view v2 as select next value for s1;
select * from v1;
next_not_cached_value minimum_value maximum_value start_value increment cache_size cycle_option cycle_count
1 1 9223372036854775806 1 1 1000 0 0
select * from v2;
next value for s1
1
select * from v2;
next value for s1
2
select next value for v1;
ERROR 42S02: 'test.v1' is not a SEQUENCE
drop sequence s1;
drop view v1,v2;
#
# MDEV 13020 Server crashes in Item_func_nextval::val_int upon
# selecting NEXT or PREVIOUS VALUE for a view
#
CREATE OR REPLACE VIEW v1 AS SELECT 1 AS f;
SELECT NEXT VALUE FOR v1;
ERROR 42S02: 'test.v1' is not a SEQUENCE
SELECT PREVIOUS VALUE FOR v1;
ERROR 42S02: 'test.v1' is not a SEQUENCE
drop view v1;

29
mysql-test/suite/sql_sequence/view.test Normal file
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--source include/have_sequence.inc
--source include/have_innodb.inc
#
# Test sequences with views
#
create sequence s1;
create view v1 as select * from s1;
create view v2 as select next value for s1;
select * from v1;
select * from v2;
select * from v2;
--error ER_NOT_SEQUENCE
select next value for v1;
drop sequence s1;
drop view v1,v2;
--echo #
--echo # MDEV 13020 Server crashes in Item_func_nextval::val_int upon
--echo # selecting NEXT or PREVIOUS VALUE for a view
--echo #
CREATE OR REPLACE VIEW v1 AS SELECT 1 AS f;
--error ER_NOT_SEQUENCE
SELECT NEXT VALUE FOR v1;
--error ER_NOT_SEQUENCE
SELECT PREVIOUS VALUE FOR v1;
drop view v1;