erroneous check
Problem: Actually there were two problems in the server code. The check
for SQLCOM_FLUSH in SF/Triggers were not according to the existing
architecture which uses sp_get_flags_for_command() from sp_head.cc .
This function was also missing a check for SQLCOM_FLUSH which has a
problem combined with prelocking. This changeset fixes both of these
deficiencies as well as the erroneous check in
sp_head::is_not_allowed_in_function() which was a copy&paste error.
mysql-test/r/sp-error.result:
update result
mysql-test/r/trigger.result:
update result
mysql-test/t/sp-error.test:
FLUSH can create a problem with prelocking, hence it's disabled.
There is a better way to check this than a check in the parser.
Now we use sp_get_flags_for_command() and the error returned is
different.
mysql-test/t/trigger.test:
FLUSH can create a problem with prelocking, hence it's disabled.
There is a better way to check this than a check in the parser.
Now we use sp_get_flags_for_command() and the error returned is
different.
sql/sp_head.cc:
FLUSH and RESET are not allowed inside a SF/Trigger.
Because they don't imply a COMMIT sp_head::HAS_COMMIT_OR_ROLLBACK
cannot be used. Two new flags were introduced for that reason.
sql/sp_head.h:
Don't check m_type as this check is erroneous. This is probably
a copy and paste error when moving code from somewhere else. Another
fact which supports this was prefixing the enum value with the name
of class sp_head.
Adding two new flags HAS_SQLCOM_RESET and HAS_SQLCOM_FLUSH. The values
are 2048 and 4096 because in the 5.1 branch there are already new flags
which are with values up-to 1024.
sql/sql_parse.cc:
FLUSH can cause a problem with prelocking in SF/Trigger and
therefore is already disabled. RESET is also disabled because
is handled by the same code as FLUSH. We won't allow RESET inside
SF/Trigger at that stage without thorough analysis. The check for
them is already done in the parser by calling
is_not_allowed_in_function()
sql/sql_yacc.yy:
By listing SQLCOM_FLUSH as command which implies COMMIT
in sp_get_flags_for_command() the check in sql_yacc.yy is
obsolete.
const tables. This resulted in choosing extremely inefficient
execution plans in same cases when distribution of data in
joined were skewed (see the customer test case for the bug).
mysql-test/r/select.result:
Added a test case for bug #21390: wrong estimate of rows
after elimination of const tables.
Includded a test case that checks the code added by the patch
that handles outer joins with no matches after substitution of
a const table in an efficient way.
mysql-test/t/select.test:
Added a test case for bug #21390: wrong estimate of rows
after elimination of const tables.
Included a test case that checks the code added by the patch
that handles outer joins with no matches after substitution of
a const table in an efficient way.
sql/sql_select.cc:
Fixed bug #21390: wrong estimate of rows after elimination of
const tables. This resulted in choosing extremely inefficient
execution plans in same cases when distribution of data in
joined were skewed (see the customer test case for the bug).
Also added the code to handle outer joins with no matches after
substitution of a const table in an efficient way.
Corrected calculation of the null rejecting key conditions.
The following procedure was not possible if max_sp_recursion_depth is 0
create procedure show_proc() show create procedure show_proc;
Actually there is no recursive call but the limit is checked.
Solved by temporarily increasing the thread's limit just before the fetch from cache
and decreasing after that.
mysql-test/r/sp.result:
update result
mysql-test/t/sp.test:
Test for bug #21416 SP: Recursion level higher than zero needed for non-recursive call
sql/sp.cc:
Increase the max_sp_recursion_depth temporarily for SHOW CREATE PROCEDURE call.
This call is in fact not recursive but is counted as such. Outcome, it will work
always but if max_sp_recursion_depth is reached we are going to cache one more
sp_head instance.
Must not use Item_direct_ref in HAVING because it points to
the new value (witch is not yet calculated for the first row).
mysql-test/r/subselect.result:
Bug #16255: Subquery in where
- test case
mysql-test/t/subselect.test:
Bug #16255: Subquery in where
- test case
sql/item_subselect.cc:
Bug #16255: Subquery in where
Must not use Item_direct_ref in HAVING because it points to
the new value (witch is not yet calculated for the first row).
Changed trigger-handling code so that there will be the one
place for generate statement string for replication log
and for trigger file.
sql/sql_trigger.cc:
Changed trigger-handling code so that there will be the one
place for generate statement string for replication log
and for trigger file.
sql/sql_trigger.h:
Changed trigger-handling code so that there will be the one
place for generate statement string for replication log
and for trigger file.
Changes in an item tree done by optimizer weren't properly
registered and went unnoticed, which resulted in preliminary freeing
of used memory.
mysql-test/r/ps.result:
Add result for bug#21166: Prepared statement causes signal 11
on second execution.
mysql-test/t/ps.test:
Add test case for bug#21166: Prepared statement causes signal 11
on second execution.
sql/item.cc:
Move Item::transform() and Item_default_value::transform() from
item.h here and use THD::change_item_tree() instead of plain
assignment.
Change Item_field::set_no_const_sub() to be used with Item::walk()
instead of Item::transform().
sql/item.h:
Move definition of Item::transform() and Item_default_value::transform()
to item.cc.
Change Item::set_no_const_sub() to be used with Item::walk()
instead of Item::transform().
sql/item_cmpfunc.cc:
Use Item::walk() to execute Item::set_no_const_sub().
Use THD::change_item_tree() instead of plain assignment.
sql/item_func.cc:
Add assert and comment to Item_func::traverse_cond().
sql/item_row.cc:
Use THD::change_item_tree() instead of plain assignment.
sql/item_strfunc.cc:
Move Item_func_make_set::transform() from item_strfunc.h here and use
THD::change_item_tree() instead of plain assignment.
sql/item_strfunc.h:
Move definition of Item_func_make_set::transform() to item_strfunc.cc.
- Fix typo in Item_func_export_set::fix_length_and_dec() which caused character set aggregation to fail
- Remove default argument from last arg of agg_arg_charsets() function, to reduce potential errors
mysql-test/r/func_misc.result:
Test EXPORT_SET() with charset coersion (bug #21531)
mysql-test/t/func_misc.test:
Test EXPORT_SET() with charset coersion (bug #21531)
sql/item_func.h:
Remove default argument from last arg of agg_arg_charsets() function, to reduce potential errors.
sql/item_strfunc.cc:
Fix typo in Item_func_export_set::fix_length_and_dec() which caused character set aggregation to fail.
Corrected test case for the bug#21261
sql_parse.cc:
Corrected fix for bug#21261
mysql-test/t/view.test:
Corrected test case for the bug#21261
mysql-test/r/view.result:
Corrected test case for the bug#21261
sql/sql_parse.cc:
Corrected fix for bug#21261
into siva.hindu.god:/usr/home/tim/m/bk/41
sql/item_strfunc.cc:
Auto merged
sql/item_strfunc.h:
Auto merged
sql/slave.cc:
Auto merged
sql/sql_acl.cc:
Auto merged
Remove some sql_print_error() calls which were triggered by user error (i.e., not server-level events at all).
Also, convert an sql_print_error -> sql_print_information for a non-error server event.
sql/slave.cc:
Change sql_print_error to sql_print_information for non-error status message.
sql/sql_acl.cc:
Remove sql_print_error calls for events which are not server errors
into maint1.mysql.com:/data/localhome/cmiller/mysql-5.0-maint
mysql-test/r/variables.result:
Auto merged
mysql-test/t/variables.test:
Auto merged
sql/sql_lex.cc:
Auto merged
sql/gen_lex_hash.cc:
Manual merge
User name (host name) has limit on length. The server code relies on these
limits when storing the names. The problem was that sometimes these limits
were not checked properly, so that could lead to buffer overflow.
The fix is to check length of user/host name in parser and if string is too
long, throw an error.
mysql-test/r/grant.result:
Updated result file.
mysql-test/r/sp.result:
Updated result file.
mysql-test/r/trigger.result:
Updated result file.
mysql-test/r/view.result:
Updated result file.
mysql-test/t/grant.test:
Added test for BUG#16899.
mysql-test/t/sp.test:
Added test for BUG#16899.
mysql-test/t/trigger.test:
Added test for BUG#16899.
mysql-test/t/view.test:
Added test for BUG#16899.
sql/mysql_priv.h:
Added prototype for new function.
sql/share/errmsg.txt:
Added new resources.
sql/sql_acl.cc:
Remove outdated checks.
sql/sql_parse.cc:
Add a new function for checking string length.
sql/sql_yacc.yy:
Check length of user/host name.
Zero-length variables caused failures when using the length to look
up the name in a hash. Instead, signal that no zero-length name can
ever be found and that to encounter one is a syntax error.
mysql-test/r/variables.result:
Results for test.
mysql-test/t/variables.test:
Insert tests to prove that zero-length variable names do not cause
faults.
sql/gen_lex_hash.cc:
If the length is zero, then there is nothing to look-up in the
hash.
sql/sql_lex.cc:
Names of variables must not be empty. Signal an error of that
happens.
into lamia.home:/home/timka/mysql/src/5.0-bug-21456
mysql-test/r/distinct.result:
Merge the fix for BUG#21456
mysql-test/t/distinct.test:
Merge the fix for BUG#21456
sql/sql_select.cc:
Merge the fix for BUG#21456
GROUP BY/DISTINCT pruning optimization must be done before ORDER BY
optimization because ORDER BY may be removed when GROUP BY/DISTINCT
sorts as a side effect, e.g. in
SELECT DISTINCT <non-key-col>,<pk> FROM t1
ORDER BY <non-key-col> DISTINCT
must be removed before ORDER BY as if done the other way around
it will remove both.
mysql-test/r/distinct.result:
Test for BUG#21456.
mysql-test/t/distinct.test:
Test for BUG#21456.
sql/sql_select.cc:
Bug #21456: SELECT DISTINCT(x) produces incorrect results when using order by
GROUP BY/DISTINCT pruning optimization must be done before ORDER BY
optimization because ORDER BY may be removed when GROUP BY/DISTINCT
sorts as a side effect.
