File: view.test

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--source include/have_sequence.inc

#
# Test sequences with views
#

create sequence s1;
create view v1 as select * from s1;
create view v2 as select next value for s1;
--disable_ps2_protocol
select * from v1;
select * from v2;
select * from v2;
--enable_ps2_protocol
--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;

--echo #
--echo # MDEV 17978 Server crashes in mysqld_show_create_get_fields
--echo # upon SHOW CREATE SEQUENCE on a broken view
--echo #
CREATE TABLE t1 (a INT);
CREATE VIEW v1 AS SELECT * FROM t1;
DROP TABLE t1;
--error ER_NOT_SEQUENCE
SHOW CREATE SEQUENCE v1;
DROP VIEW v1;