mirror of
https://github.com/MariaDB/server.git
synced 2025-01-17 20:42:30 +01:00
2b720487f0
Do not issue a 'read-only' error in case of DROP TEMPORARY TABLE on a non-existing temporary table. Instead produce the correct "Unknown table" error or warning (in cases when the IF EXISTS clause was specified). To a documentor: the part of the manual describing the 'read_only' system variable should be clarified to state the following: "When the read_only variable is set to ON, all operations which create/update/drop tables are rejected with the exceptions for: 1. Any operation performed by the replication thread on a slave server 2. Any operation performed by a user that have the SUPER privilege 3. Any operation that creates/updates/drops only temporary tables" mysql-test/r/read_only.result: Added testcases for bug #22077 "DROP TEMPORARY TABLE fails with wrong error if read_only is set" mysql-test/t/read_only.test: Added testcases for bug #22077 "DROP TEMPORARY TABLE fails with wrong error if read_only is set" sql/sql_parse.cc: Before issuing the 'read-only' error also check if the operation is not a DROP TEMPORARY TABLE statement
120 lines
2.4 KiB
Text
120 lines
2.4 KiB
Text
# Test of the READ_ONLY global variable:
|
|
# check that it blocks updates unless they are only on temporary tables.
|
|
|
|
# should work with embedded server after mysqltest is fixed
|
|
-- source include/not_embedded.inc
|
|
|
|
--disable_warnings
|
|
DROP TABLE IF EXISTS t1,t2,t3;
|
|
--enable_warnings
|
|
|
|
# READ_ONLY does nothing to SUPER users
|
|
# so we use a non-SUPER one:
|
|
|
|
grant CREATE, SELECT, DROP on *.* to test@localhost;
|
|
|
|
connect (con1,localhost,test,,test);
|
|
|
|
connection default;
|
|
|
|
set global read_only=0;
|
|
|
|
connection con1;
|
|
|
|
create table t1 (a int);
|
|
|
|
insert into t1 values(1);
|
|
|
|
create table t2 select * from t1;
|
|
|
|
connection default;
|
|
|
|
set global read_only=1;
|
|
|
|
# We check that SUPER can:
|
|
|
|
create table t3 (a int);
|
|
drop table t3;
|
|
|
|
connection con1;
|
|
|
|
select @@global.read_only;
|
|
|
|
--error 1290
|
|
create table t3 (a int);
|
|
|
|
--error 1290
|
|
insert into t1 values(1);
|
|
|
|
# if a statement, after parse stage, looks like it will update a
|
|
# non-temp table, it will be rejected, even if at execution it would
|
|
# have turned out that 0 rows would be updated
|
|
--error 1290
|
|
update t1 set a=1 where 1=0;
|
|
|
|
# multi-update is special (see sql_parse.cc) so we test it
|
|
--error 1290
|
|
update t1,t2 set t1.a=t2.a+1 where t1.a=t2.a;
|
|
|
|
# check multi-delete to be sure
|
|
--error 1290
|
|
delete t1,t2 from t1,t2 where t1.a=t2.a;
|
|
|
|
# With temp tables updates should be accepted:
|
|
|
|
create temporary table t3 (a int);
|
|
|
|
create temporary table t4 (a int) select * from t3;
|
|
|
|
insert into t3 values(1);
|
|
|
|
insert into t4 select * from t3;
|
|
|
|
# a non-temp table updated:
|
|
--error 1290
|
|
update t1,t3 set t1.a=t3.a+1 where t1.a=t3.a;
|
|
|
|
# no non-temp table updated (just swapped):
|
|
update t1,t3 set t3.a=t1.a+1 where t1.a=t3.a;
|
|
|
|
update t4,t3 set t4.a=t3.a+1 where t4.a=t3.a;
|
|
|
|
--error 1290
|
|
delete t1 from t1,t3 where t1.a=t3.a;
|
|
|
|
delete t3 from t1,t3 where t1.a=t3.a;
|
|
|
|
delete t4 from t3,t4 where t4.a=t3.a;
|
|
|
|
# and even homonymous ones
|
|
|
|
create temporary table t1 (a int);
|
|
|
|
insert into t1 values(1);
|
|
|
|
update t1,t3 set t1.a=t3.a+1 where t1.a=t3.a;
|
|
|
|
delete t1 from t1,t3 where t1.a=t3.a;
|
|
|
|
drop table t1;
|
|
|
|
--error 1290
|
|
insert into t1 values(1);
|
|
|
|
#
|
|
# BUG #22077 "DROP TEMPORARY TABLE fails with wrong error if read_only is set"
|
|
#
|
|
# check if DROP TEMPORARY on a non-existing temporary table returns the right
|
|
# error
|
|
|
|
--error ER_BAD_TABLE_ERROR
|
|
drop temporary table ttt;
|
|
|
|
# check if DROP TEMPORARY TABLE IF EXISTS produces a warning with read_only set
|
|
drop temporary table if exists ttt;
|
|
|
|
connection default;
|
|
drop table t1,t2;
|
|
drop user test@localhost;
|
|
|
|
set global read_only=0;
|