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- 13 Dec, 2007 3 commits
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kostja@bodhi.(none) authored
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mhansson/martin@linux-st28.site authored
subselects into account It is forbidden to use the SELECT INTO construction inside UNION statements unless on the last SELECT of the union. The parser records whether it has seen INTO or not when parsing a UNION statement. But if the INTO was legally used in an outer query, an error is thrown if UNION is seen in a subquery. Fixed in 5.0 by remembering the nesting level of INTO tokens and mitigate the error unless it collides with the UNION.
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kostja@bodhi.(none) authored
last_insert_id introduced by the patch for Bug#12713 (part 1)
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- 12 Dec, 2007 2 commits
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kostja@bodhi.(none) authored
cause ROLLBACK of statement", part 1. Review fixes. Do not send OK/EOF packets to the client until we reached the end of the current statement. This is a consolidation, to keep the functionality that is shared by all SQL statements in one place in the server. Currently this functionality includes: - close_thread_tables() - log_slow_statement(). After this patch and the subsequent patch for Bug#12713, it shall also include: - ha_autocommit_or_rollback() - net_end_statement() - query_cache_end_of_result(). In future it may also include: - mysql_reset_thd_for_next_command().
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aelkin/elkin@koti.dsl.inet.fi authored
without PK Bug#31609 Not all RBR slave errors reported as errors bug#32468 delete rows event on a table with foreign key constraint fails The first two bugs comprise idempotency issues. First, there was no error code reported under conditions of the bug description although the slave sql thread halted. Second, executions were different with and without presence of prim key in the table. Third, there was no way to instruct the slave whether to ignore an error and skip to the following event or to halt. Fourth, there are handler errors which might happen due to idempotent applying of binlog but those were not listed among the "idempotent" error list. All the named issues are addressed. Wrt to the 3rd, there is the new global system variable, changeble at run time, which controls the slave sql thread behaviour. The new variable allows further extensions to mimic the sql_mode session/global variable. To address the 4th, the new bug#32468 had to be fixed as it was staying in the way.
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- 26 Nov, 2007 1 commit
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kaa@polly.(none) authored
insert ... select. The 5.0 manual page for mysql_insert_id() does not mention anything about INSERT ... SELECT, though its current behavior is incosistent with what the manual says about the plain INSERT. Fixed by changing the AUTO_INCREMENT and mysql_insert_id() handling logic in INSERT ... SELECT to be consistent with the INSERT behavior, the manual, and the changes in 5.1 introduced by WL3146: - mysql_insert_id() now returns the first automatically generated AUTO_INCREMENT value that was successfully inserted by INSERT ... SELECT - if an INSERT ... SELECT statement is executed, and no automatically generated value is successfully inserted, mysql_insert_id() now returns the ID of the last inserted row.
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- 19 Nov, 2007 1 commit
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evgen@moonbone.local authored
led to creating corrupted index. Corrected fix. The new method called prepare2 is added to the select_create class. As all preparations are done by the select_create::prepare function it doesn't do anything. Slightly changed algorithm of calling the start_bulk_insert function. Now it's called from the select_insert::prepare2 function when the SQL_BUFFER_RESULT flags is set. The is_bulk_insert_mode flag is removed as it is not needed anymore.
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- 10 Nov, 2007 2 commits
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serg@janus.mylan authored
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UNIQUE (eq-ref) lookups result in table being considered as a "constant" table. Queries that consist of only constant tables are processed in do_select() in a special way that doesn't invoke evaluate_join_record(), and therefore doesn't increase the counters join->examined_rows and join->thd->row_count. The patch increases these counters in this special case. NOTICE: This behavior seems to contradict what the documentation says in Sect. 5.11.4: "Queries handled by the query cache are not added to the slow query log, nor are queries that would not benefit from the presence of an index because the table has zero rows or one row." No test case in 5.0 as issue shows only in slow query log, and other counters can give subtly different values (with regard to counting in create_sort_index(), synthetic rows in ROLLUP, etc.).
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- 31 Oct, 2007 1 commit
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kostja@bodhi.(none) authored
Add select_send::cleanup. Fix a compilation warning. Issues spotted while working on the fix for Bug#12713.
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- 30 Oct, 2007 2 commits
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kostja@bodhi.(none) authored
and convert it to a warning instead of direct manipulation with the thread error stack. Fix a bug in handler::print_erorr when a garbled message was printed for HA_ERR_NO_SUCH_TABLE. This is a pre-requisite patch for the fix for Bug#12713 Error in a stored function called from a SELECT doesn't cause ROLLBACK of statem
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kostja@bodhi.(none) authored
in THD. In future the error may be stored elsewhere (not in net.report_error) and it's important to start using an opaque getter to simplify merges.
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- 25 Oct, 2007 1 commit
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sven@murkla.(none) authored
Documented some binlog events using doxygen. More will be done later. Also fixed typos in other comments and added remarks about dubious code. Only comments are affected, there is no change to the actual code.
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- 23 Oct, 2007 1 commit
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gshchepa/uchum@gleb.loc authored
in the SELECT INTO OUTFILE clause starts with a special character (one of n, t, r, b, 0, Z or N) and ENCLOSED BY is empty, every occurrence of this character within a field value is duplicated. Duplication has been avoided. New warning message has been added: "First character of the FIELDS TERMINATED string is ambiguous; please use non-optional and non-empty FIELDS ENCLOSED BY".
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- 19 Oct, 2007 1 commit
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kostja@bodhi.(none) authored
Add comments.
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- 16 Oct, 2007 1 commit
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cmiller@zippy.cornsilk.net authored
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- 13 Oct, 2007 1 commit
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aelkin/elkin@koti.dsl.inet.fi authored
similar to bug_27716, but it was stressed on in the synopsis on that there is another side of the artifact affecting behaviour in transaction. Fixed with deploying multi_delete::send_error() - otherwise never called - and refining its logic to perform binlogging job if needed. The changeset includes the following side effects: - added tests to check bug_23333's scenarios on the mixture of tables for multi_update; - fixes bug@30763 with two-liner patch and a test coinciding to one added for bug_23333.
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- 03 Oct, 2007 1 commit
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sven@murkla.(none) authored
Problem: one thread could read uninitialized memory from (the stack of) another thread. Fix: swapped order of initializing the memory and making it available to the other thread. Fix: put lock around the statement that makes the memory available to the other thread. Fix: all fields of the struct are now initialized in the constructor, to avoid future problems.
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- 28 Sep, 2007 1 commit
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davi@moksha.local authored
the sql_class.h file.
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- 21 Sep, 2007 1 commit
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evgen@sunlight.local authored
led to creating corrupted index. While execution of the CREATE .. SELECT SQL_BUFFER_RESULT statement the engine->start_bulk_insert function was called twice. On the first call On the first call MyISAM disabled all non-unique indexes and on the second call it decides to not re-enable them because all indexes was disabled. Due to this no indexes was actually created during CREATE TABLE thus producing crashed table. Now the select_inset class has is_bulk_insert_mode flag which prevents calling the start_bulk_insert function twice. The flag is set in the select_create::prepare, select_insert::prepare2 functions and the select_insert class constructor. The flag is reset in the select_insert::send_eof function.
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- 31 Aug, 2007 1 commit
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anozdrin/alik@ibm.opbmk authored
of statement breaks binlog. There were two problems discovered by this bug: 1. Default (current) database is not fixed at the creation time. That leads to wrong output of DATABASE() function. 2. Database attributes (@@collation_database) are not fixed at the creation time. That leads to wrong resultset. Binlog breakage and Query Cache wrong output happened because of the first problem. The fix is to remember the current database at the PREPARE-time and set it each time at EXECUTE.
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- 30 Aug, 2007 1 commit
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anozdrin/alik@ibm.opbmk authored
PREPARE and EXECUTE of statement breaks binlog.
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- 16 Aug, 2007 1 commit
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mats@kindahl-laptop.dnsalias.net authored
(and be more friendly to Doxygen by removing unnecessary typedefs).
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- 13 Aug, 2007 1 commit
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monty@mysql.com/nosik.monty.fi authored
Faster thr_alarm() Added 'Opened_files' status variable to track calls to my_open() Don't give warnings when running mysql_install_db Added option --source-install to mysql_install_db I had to do the following renames() as used polymorphism didn't work with Forte compiler on 64 bit systems index_read() -> index_read_map() index_read_idx() -> index_read_idx_map() index_read_last() -> index_read_last_map()
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- 02 Aug, 2007 1 commit
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evgen@moonbone.local authored
After merge changes.
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- 01 Aug, 2007 2 commits
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- THD::tmp_table_used removed, THD::thread_specific_used used instead.
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restores from mysqlbinlog out Problem: using "mysqlbinlog | mysql" for recoveries the connection_id() result may differ from what was used when issuing the statement. Fix: if there is a connection_id() in a statement, write to binlog SET pseudo_thread_id= XXX; before it and use the value later on.
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- 30 Jul, 2007 3 commits
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gkodinov/kgeorge@magare.gmz authored
Bug #27417 thd->no_trans_update.stmt lost value inside of SF-exec-stack Once had been set the flag might later got reset inside of a stored routine execution stack. The reason was in that there was no check if a new statement started at time of resetting. The artifact affects most of binlogable DML queries. Notice, that multi-update is wrapped up within bug@27716 fix, multi-delete bug@29136. Fixed with saving parent's statement flag of whether the statement modified non-transactional table, and unioning (merging) the value with that was gained in mysql_execute_command. Resettling thd->no_trans_update members into thd->transaction.`member`; Asserting code; Effectively the following properties are held. 1. At the end of a substatement thd->transaction.stmt.modified_non_trans_table reflects the fact if such a table got modified by the substatement. That also respects THD::really_abort_on_warnin() requirements. 2. Eventually thd->transaction.stmt.modified_non_trans_table will be computed as the union of the values of all invoked sub-statements. That fixes this bug#27417; Computing of thd->transaction.all.modified_non_trans_table is refined to base to the stmt's value for all the case including insert .. select statement which before the patch had an extra issue bug@28960. Minor issues are covered with mysql_load, mysql_delete, and binloggin of insert in to temp_table select. The supplied test verifies limitely, mostly asserts. The ultimate testing is defered for bug@13270, bug@23333.
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evgen@moonbone.local authored
When innodb detects a deadlock it calls ha_rollback_trans() to rollback the main transaction. But such action isn't allowed from inside of triggers and functions. When it happen the 'Explicit or implicit commit' error is thrown even if there is no commit/rollback statements in the trigger/function. This leads to the user confusion. Now the convert_error_code_to_mysql() function doesn't call the ha_rollback_trans() function directly but rather calls the mark_transaction_to_rollback function and returns an error. The sp_rcontext::find_handler() now doesn't allow errors to be caught by the trigger/function error handlers when the thd->is_fatal_sub_stmt_error flag is set. Procedures are still allowed to catch such errors. The sp_rcontext::find_handler function now accepts a THD handle as a parameter. The transaction_rollback_request and the is_fatal_sub_stmt_error flags are added to the THD class. The are initialized by the THD class constructor. Now the ha_autocommit_or_rollback function rolls back main transaction when not in a sub statement and the thd->transaction_rollback_request is set. The THD::restore_sub_statement_state function now resets the thd->is_fatal_sub_stmt_error flag on exit from a sub-statement.
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monty@mysql.com/nosik.monty.fi authored
--long-query-time is now given in seconds with microseconds as decimals --min_examined_row_limit added for slow query log long_query_time user variable is now double with 6 decimals Added functions to get time in microseconds Added faster time() functions for system that has gethrtime() (Solaris) We now do less time() calls. Added field->in_read_set() and field->in_write_set() for easier field manipulation by handlers set_var.cc and my_getopt() can now handle DOUBLE variables. All time() calls changed to my_time() my_time() now does retry's if time() call fails. Added debug function for stopping in mysql_admin_table() when tables are locked Some trivial function and struct variable renames to avoid merge errors. Fixed compiler warnings Initialization of some time variables on windows moved to my_init()
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- 27 Jul, 2007 2 commits
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kostja@bodhi.(none) authored
between perm and temp tables. Review fixes. The original bug report complains that if we locked a temporary table with LOCK TABLES statement, we would not leave LOCK TABLES mode when this temporary table is dropped. Additionally, the bug was escalated when it was discovered than when a temporary transactional table that was previously locked with LOCK TABLES statement was dropped, futher actions with this table, such as UNLOCK TABLES, would lead to a crash. The problem originates from incomplete support of transactional temporary tables. When we added calls to handler::store_lock()/handler::external_lock() to operations that work with such tables, we only covered the normal server code flow and did not cover LOCK TABLES mode. In LOCK TABLES mode, ::external_lock(LOCK) would sometimes be called without matching ::external_lock(UNLOCK), e.g. when a transactional temporary table was dropped. Additionally, this table would be left in the list of LOCKed TABLES. The patch aims to address this inadequacy. Now, whenever an instance of 'handler' is destroyed, we assert that it was priorly external_lock(UNLOCK)-ed. All the places that violate this assert were fixed. This patch introduces no changes in behavior -- the discrepancy in behavior will be fixed when we start calling ::store_lock()/::external_lock() for all tables, regardless whether they are transactional or not, temporary or not.
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malff/marcsql@weblab.(none) authored
Bug#25422 (Hang with log tables) Bug 17876 (Truncating mysql.slow_log in a SP after using cursor locks the thread) Bug 23044 (Warnings on flush of a log table) Bug 29129 (Resetting general_log while the GLOBAL READ LOCK is set causes a deadlock) Prior to this fix, the server would hang when performing concurrent ALTER TABLE or TRUNCATE TABLE statements against the LOG TABLES, which are mysql.general_log and mysql.slow_log. The root cause traces to the following code: in sql_base.cc, open_table() if (table->in_use != thd) { /* wait_for_condition will unlock LOCK_open for us */ wait_for_condition(thd, &LOCK_open, &COND_refresh); } The problem with this code is that the current implementation of the LOGGER creates 'fake' THD objects, like - Log_to_csv_event_handler::general_log_thd - Log_to_csv_event_handler::slow_log_thd which are not associated to a real thread running in the server, so that waiting for these non-existing threads to release table locks cause the dead lock. In general, the design of Log_to_csv_event_handler does not fit into the general architecture of the server, so that the concept of general_log_thd and slow_log_thd has to be abandoned: - this implementation does not work with table locking - it will not work with commands like SHOW PROCESSLIST - having the log tables always opened does not integrate well with DDL operations / FLUSH TABLES / SET GLOBAL READ_ONLY With this patch, the fundamental design of the LOGGER has been changed to: - always open and close a log table when writing a log - remove totally the usage of fake THD objects - clarify how locking of log tables is implemented in general. See WL#3984 for details related to the new locking design. Additional changes (misc bugs exposed and fixed): 1) mysqldump which would ignore some tables in dump_all_tables_in_db(), but forget to ignore the same in dump_all_views_in_db(). 2) mysqldump would also issue an empty "LOCK TABLE" command when all the tables to lock are to be ignored (numrows == 0), instead of not issuing the query. 3) Internal errors handlers could intercept errors but not warnings (see sql_error.cc). 4) Implementing a nested call to open tables, for the performance schema tables, exposed an existing bug in remove_table_from_cache(), which would perform: in_use->some_tables_deleted=1; against another thread, without any consideration about thread locking. This call inside remove_table_from_cache() was not required anyway, since calling mysql_lock_abort() takes care of aborting -- cleanly -- threads that might hold a lock on a table. This line (in_use->some_tables_deleted=1) has been removed.
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- 18 Jul, 2007 1 commit
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kostja@bodhi.(none) authored
Fix the typo in the constructor. Cover a semantic check that previously never worked with a test.
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- 16 Jul, 2007 1 commit
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dkatz@damien-katzs-computer.local authored
This bug was caused by unitialized value that was the result of a bad 5.0 merge.
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- 13 Jul, 2007 2 commits
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kostja@bodhi.(none) authored
we now have exclusive name lock on the table name in mysql_rm_table_part2, we still should keep LOCK_open - some storage engines are not ready for locking scope change and assume that LOCK_open is kept. Still, the binary logging and query cache invalidation calls moved out of LOCK_open scope. Fixes some of the broken 5.1-runtime tests (tests break on asserts).
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tnurnberg@sin.intern.azundris.com authored
gettimeofday() can fail and presumably, so can time(). Keep an eye on it. Since we have no data on this at all so far, we just retry on failure (and log the event), assuming that this is just an intermittant failure. This might of course hang the threat until we succeed. Once we know more about these failures, an appropriate more clever scheme may be picked (only try so many times per thread, etc., if that fails, return last "good" time() we got or some such). Using sql_print_information() to log as this probably only occurs in high load scenarios where the debug- trace likely is disabled (or might interfere with testing the effect). No test-case as this is a non-deterministic issue.
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- 11 Jul, 2007 1 commit
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gkodinov/kgeorge@magare.gmz authored
By default MyISAM overwrites .MYD and .MYI files no DATA DIRECTORY option is used. This can lead to two tables using the same .MYD and .MYI files (that can't be dropped). To prevent CREATE TABLE from overwriting a file a new option is introduced : keep_files_on_create When this is on the CREATE TABLE throws an error if either the .MYD or .MYI exists for a MyISAM table. The option is off by default (resulting in compatible behavior).
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- 05 Jul, 2007 1 commit
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gshchepa/uchum@gleb.loc authored
The SELECT INTO OUTFILE FIELDS ENCLOSED BY digit or minus sign, followed by the same LOAD DATA INFILE statement, used wrond encoding of non-string fields contained the enclosed character in their text representation. Example: SELECT 15, 9 INTO OUTFILE 'text' FIELDS ENCLOSED BY '5'; Old encoded result in the text file: 5155 595 ^ was decoded as the 1st enclosing character of the 2nd field; ^ was skipped as garbage; ^ ^ was decoded as a pair of englosing characters of the 1st field; ^ was decoded as traling space of the first field; ^^ was decoded as a doubled enclosed character. New encoded result in the text file: 51\55 595 ^ ^ pair of enclosing characters of the 1st field; ^^ escaped enclosed character.
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- 04 Jul, 2007 1 commit
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tsmith@maint1.mysql.com authored
Add more accessors to MySQL internals in mysql/plugin.h, for storage engine plugins. Add some accessors specific to the InnoDB storage engine, to allow InnoDB to be compiled as a plugin (without MYSQL_SERVER). InnoDB has additional requirements, due to its foreign key support, etc.
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- 03 Jul, 2007 1 commit
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gshchepa/uchum@gleb.loc authored
The `SELECT 'r' INTO OUTFILE ... FIELDS ENCLOSED BY 'r' ' statement encoded the 'r' string to a 4 byte string of value x'725c7272' (sequence of 4 characters: r\rr). The LOAD DATA statement decoded this string to a 1 byte string of value x'0d' (ASCII Carriage Return character) instead of the original 'r' character. The same error also happened with the FIELDS ENCLOSED BY clause followed by special characters: 'n', 't', 'r', 'b', '0', 'Z' and 'N'. NOTE 1: This is a result of the undocumented feature: the LOAD DATA INFILE recognises 2-byte input sequences like \n, \t, \r and \Z in addition to documented 2-byte sequences: \0 and \N. This feature should be documented (here backspace character is a default ESCAPED BY character, in the real-life example it may be any ESCAPED BY character). NOTE 2, changed behaviour: Now the `SELECT INTO OUTFILE' statement with the `FIELDS ENCLOSED BY' clause followed by one of: 'n', 't', 'r', 'b', '0', 'Z' or 'N' characters encodes this special character itself by doubling it ('r' --> 'rr'), not by prepending it with an escape character.
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