extend table names discovery (ha_discover_table_names() and Discovered_table_list) to return
or optionally filter out temporary tables ("#sql..."). SHOW commands and I_S tables
typically want temp table filtered out, while DROP DATABASE wants to see them too.
additonally, remove the supression for the warning "Invalid (old?) table or database name"
from mtr, and add it to .test files as needed (we need to test that this warning
does *not* happen in drop.test)
mysql-test/r/acl_roles_show_grants.result:
one can do SHOW GRANTS for himself
mysql-test/t/acl_roles_set_role-table-column-priv.test:
correct error message
mysql-test/t/acl_roles_show_grants.test:
one can SHOW GRANTS for himself
sql/sql_acl.cc:
bugfixing:
* don't assign with && - it can shortcut and the second assignment won't be executed
* correct the test in check_grant_all_columns() - want_access should not be modified
*
sql/sql_cmd.h.OTHER:
add new commands at the end
sql/sql_db.cc:
don't call acl_get() if all privileges are already satisfied
(crashes when run with --skip-grants, because acl data stuctures aren't initialized)
sql/sql_parse.cc:
* test for current_user in get_current_user()
* map explicitly specified user@host to current_user
"SHOW PROCESSLIST"
Analysis:
----------
The problem here is, if one connection changes its
default db and at the same time another connection executes
"SHOW PROCESSLIST", when it wants to read db of the another
connection then there is a chance of accessing the invalid
memory.
The db name stored in THD is not guarded while changing user
DB and while reading the user DB in "SHOW PROCESSLIST".
So, if THD.db is freed by thd "owner" thread and if another
thread executing "SHOW PROCESSLIST" statement tries to read
and copy THD.db at the same time then we may endup in the issue
reported here.
Fix:
----------
Used mutex "LOCK_thd_data" to guard THD.db while freeing it
and while copying it to processlist.
1. DROP DATABASE should use ha_discover_table_names(), not look at .frm files.
2. filename_to_tablename() also encodes temp file names #sql- -> #mysql50##sql
3. no special treatment for #sql- files, no TABLE_LIST::internal_tmp_table
4. discover also table file names, that start from #
* replace pointer acrobatics with a struct
* make sorting explicit: MY_DONT_SORT -> MY_WANT_SORT
(if you want something to be done - say it. fixes all places where
my_dir() was used without thinking)
* typo s/number_off_files/number_of_files/
* directory_file_name() doesn't need to be extern
* remove #ifdef __BORLANDC__
* ignore '.' and '..' entries
that introduced engine independent persistent statistics.
In particular:
- added an enumeration type for possible values of the system
variable use_stat_tables
- renamed KEY::real_rec_per_key to KEY::actual_rec_per_key
- optimized the collection of statistical data for any primary
key defined only on one column.
- Added option to check_if_table_exists() to quickly check if table exists (either SHARE or .FRM)
- Extended lock_table_names() to not wait for meta data locks if CREATE IF NOT EXISTS is used.
mysql-test/r/create.result:
New test case
mysql-test/t/create.test:
New test case
sql/sql_base.cc:
Added option to check_if_table_exists() to quickly check if table exists (either SHARE or .FRM)
Extended lock_table_names() to not wait for meta data locks if CREATE IF NOT EXISTS is used.
sql/sql_base.h:
Updated prototype
sql/sql_db.cc:
Added extra argument to call to check_if_table_exists()
QUOTING IN REPLICATION
Problem: Misquoting or unquoted identifiers may lead to
incorrect statements to be logged to the binary log.
Fix: we use specialized functions to append quoted identifiers in
the statements generated by the server.
Now when a table is dropped the statistics on the table is removed
from the statistical tables. If the table is altered in such a way
that a column is dropped or the type of the column is changed then
statistics on the column is removed from the table column_stat.
It also triggers removal of the statistics on the indexes who use
this column as its component.
Added procedures that changes the names of the tables or columns
in the statistical tables for.
These procedures are used when tables/columns are renamed.
Also partly re-factored the code that introduced the persistent
statistical tables.
Added test cases into statistics.test to cover the new code.
sql/sql_insert.cc:
CREATE ... IF NOT EXISTS may do nothing, but
it is still not a failure. don't forget to my_ok it.
******
CREATE ... IF NOT EXISTS may do nothing, but
it is still not a failure. don't forget to my_ok it.
sql/sql_table.cc:
small cleanup
******
small cleanup
Cleanup: Changed procedure type from a int/char to an enum for easier to manage and debug code.
mysql-test/r/trigger.result:
Test that mysql.proc is not used as part of creating or using a trigger.
mysql-test/t/trigger.test:
Test that mysql.proc is not used as part of creating or using a trigger.
sql/sp.cc:
The main bug fix is to not look up triggers in mysql.proc; This is done by ignoreing type == TYPE_ENUM_TRIGGER in sp_add_used_routine()
Cleanup: Changed procedure type from a int/char to an enum.
sql/sp.h:
Cleanup: Changed procedure type from a int/char to an enum.
sql/sp_head.h:
Cleanup: Changed procedure type from a int/char to an enum.
sql/sql_db.cc:
Fix include order
sql/sql_lex.cc:
Fix include order
sql/sql_parse.cc:
Cleanup: Changed procedure type from a int/char to an enum.
sql/sql_show.cc:
Fix include order
sql/sql_view.cc:
Fix include order
