may return a wrong result.
An Item_sum_hybrid object has the was_values flag which indicates whether any
values were added to the sum function. By default it is set to true and reset
to false on any no_rows_in_result() call. This method is called only in
return_zero_rows() function. An ALL/ANY subquery can be optimized by MIN/MAX
optimization. The was_values flag is used to indicate whether the subquery
has returned at least one row. This bug occurs because return_zero_rows() is
called only when we know that the select will return zero rows before
starting any scans but often such information is not known.
In the reported case the return_zero_rows() function is not called and
the was_values flag is not reset to false and yet the subquery return no rows
Item_func_not_all and Item_func_nop_all functions return a wrong
comparison result.
The end_send_group() function now calls no_rows_in_result() for each item
in the fields_list if there is no rows were found for the (sub)query.
mysql-test/t/subselect.test:
Added test case for bug#18503: Queries with a quantified subquery returning empty set may return a wrong result.
mysql-test/r/subselect.result:
Added test case for bug#18503: Queries with a quantified subquery returning empty set may return a wrong result.
sql/sql_select.cc:
Fixed bug#18503: Queries with a quantified subquery returning empty set may return a wrong result.
The end_send_group() function now calls no_rows_in_result() for each item
in the fields_list if there is no matching rows were found.
may return a wrong result.
An Item_sum_hybrid object has the was_values flag which indicates whether any
values were added to the sum function. By default it is set to true and reset
to false on any no_rows_in_result() call. This method is called only in
return_zero_rows() function. An ALL/ANY subquery can be optimized by MIN/MAX
optimization. The was_values flag is used to indicate whether the subquery
has returned at least one row. This bug occurs because return_zero_rows() is
called only when we know that the select will return zero rows before
starting any scans but often such information is not known.
In the reported case the return_zero_rows() function is not called and
the was_values flag is not reset to false and yet the subquery return no rows
Item_func_not_all and Item_func_nop_all functions return a wrong
comparison result.
The end_send_group() function now calls no_rows_in_result() for each item
in the fields_list if there is no rows were found for the (sub)query.
into dl145k.mysql.com:/data0/mkindahl/bk/MERGE/mysql-5.1-merge
include/my_sys.h:
Auto merged
mysql-test/mysql-test-run.pl:
Auto merged
mysql-test/r/rpl_row_create_table.result:
Auto merged
mysql-test/t/disabled.def:
Auto merged
mysql-test/t/rpl_row_create_table.test:
Auto merged
mysys/my_malloc.c:
Auto merged
server-tools/instance-manager/parse.h:
Auto merged
sql/ha_ndbcluster.cc:
Auto merged
sql/handler.h:
Auto merged
sql/log.cc:
Auto merged
sql/log_event.cc:
Auto merged
sql/mysql_priv.h:
Auto merged
sql/set_var.h:
Auto merged
sql/sp.cc:
Auto merged
sql/sp_head.cc:
Auto merged
sql/sp_head.h:
Auto merged
sql/sql_base.cc:
Auto merged
sql/sql_class.cc:
Auto merged
sql/sql_insert.cc:
Auto merged
sql/sql_lex.h:
Auto merged
sql/sql_parse.cc:
Auto merged
sql/sql_select.cc:
Auto merged
sql/sql_table.cc:
Auto merged
sql/sql_update.cc:
Auto merged
sql/sql_view.cc:
Auto merged
sql/sql_yacc.yy:
Auto merged
mysys/safemalloc.c:
Merge of mysql-5.1-new-rpl into mysql-5.1
sql/ha_federated.cc:
d
Merge of mysql-5.1-new-rpl into mysql-5.1
sql/set_var.cc:
Merge of mysql-5.1-new-rpl with mysql-5.1
sql/slave.cc:
Merge of mysql-5.1-new-rpl into mysql-5.1
sql/sql_class.h:
Merge of mysql-5.1-new-rpl into mysql-5.1
into macbook.gmz:/Users/kgeorge/mysql/work/B14553-5.0-opt
mysql-test/r/odbc.result:
Auto merged
sql/sql_select.cc:
Auto merged
mysql-test/r/rpl_insert_id.result:
merge the test at the end of 4.1 test
mysql-test/t/rpl_insert_id.test:
merge the test at the end of 4.1 test
sql/sql_class.cc:
merged
sql/sql_class.h:
merged
To make MySQL compatible with some ODBC applications, you can find
the AUTO_INCREMENT value for the last inserted row with the following query:
SELECT * FROM tbl_name WHERE auto_col IS NULL.
This is done with a special code that replaces 'auto_col IS NULL' with
'auto_col = LAST_INSERT_ID'.
However this also resets the LAST_INSERT_ID to 0 as it uses it for a flag
so as to ensure that only the first SELECT ... WHERE auto_col IS NULL
after an INSERT has this special behaviour.
In order to avoid resetting the LAST_INSERT_ID a special flag is introduced
in the THD class. This flag is used to restrict the second and subsequent
SELECTs instead of LAST_INSERT_ID.
mysql-test/r/odbc.result:
test suite for the bug
mysql-test/r/rpl_insert_id.result:
test for the fix in replication
mysql-test/t/odbc.test:
test suite for the bug
mysql-test/t/rpl_insert_id.test:
test for the fix in replication
sql/sql_class.cc:
initialize the flag
sql/sql_class.h:
flag's declaration and set code when setting the last_insert_id
sql/sql_select.cc:
the special flag is used instead of last_insert_id
To make MySQL compatible with some ODBC applications, you can find
the AUTO_INCREMENT value for the last inserted row with the following query:
SELECT * FROM tbl_name WHERE auto_col IS NULL.
This is done with a special code that replaces 'auto_col IS NULL' with
'auto_col = LAST_INSERT_ID'.
However this also resets the LAST_INSERT_ID to 0 as it uses it for a flag
so as to ensure that only the first SELECT ... WHERE auto_col IS NULL
after an INSERT has this special behaviour.
In order to avoid resetting the LAST_INSERT_ID a special flag is introduced
in the THD class. This flag is used to restrict the second and subsequent
SELECTs instead of LAST_INSERT_ID.
into gbichot3.local:/home/mysql_src/mysql-5.1
sql/ha_federated.cc:
Auto merged
sql/ha_ndbcluster.cc:
Auto merged
sql/handler.h:
Auto merged
sql/log_event.cc:
Auto merged
sql/set_var.cc:
Auto merged
sql/sql_class.cc:
Auto merged
sql/sql_class.h:
Auto merged
sql/sql_parse.cc:
Auto merged
sql/sql_select.cc:
Auto merged
sql/sql_table.cc:
Auto merged
sql/sql_update.cc:
Auto merged
sql/handler.cc:
will fix by hand
mysql-test/extra/rpl_tests/rpl_insert_id.test:
merge
mysql-test/r/rpl_insert_id.result:
merge
sql/sql_insert.cc:
merge
this is a cleanup patch for our current auto_increment handling:
new names for auto_increment variables in THD, new methods to manipulate them
(see sql_class.h), some move into handler::, causing less backup/restore
work when executing substatements.
This makes the logic hopefully clearer, less work is is needed in
mysql_insert().
By cleaning up, using different variables for different purposes (instead
of one for 3 things...), we fix those bugs, which someone may want to fix
in 5.0 too:
BUG#20339 "stored procedure using LAST_INSERT_ID() does not replicate
statement-based"
BUG#20341 "stored function inserting into one auto_increment puts bad
data in slave"
BUG#19243 "wrong LAST_INSERT_ID() after ON DUPLICATE KEY UPDATE"
(now if a row is updated, LAST_INSERT_ID() will return its id)
and re-fixes:
BUG#6880 "LAST_INSERT_ID() value changes during multi-row INSERT"
(already fixed differently by Ramil in 4.1)
Test of documented behaviour of mysql_insert_id() (there was no test).
The behaviour changes introduced are:
- LAST_INSERT_ID() now returns "the first autogenerated auto_increment value
successfully inserted", instead of "the first autogenerated auto_increment
value if any row was successfully inserted", see auto_increment.test.
Same for mysql_insert_id(), see mysql_client_test.c.
- LAST_INSERT_ID() returns the id of the updated row if ON DUPLICATE KEY
UPDATE, see auto_increment.test. Same for mysql_insert_id(), see
mysql_client_test.c.
- LAST_INSERT_ID() does not change if no autogenerated value was successfully
inserted (it used to then be 0), see auto_increment.test.
- if in INSERT SELECT no autogenerated value was successfully inserted,
mysql_insert_id() now returns the id of the last inserted row (it already
did this for INSERT VALUES), see mysql_client_test.c.
- if INSERT SELECT uses LAST_INSERT_ID(X), mysql_insert_id() now returns X
(it already did this for INSERT VALUES), see mysql_client_test.c.
- NDB now behaves like other engines wrt SET INSERT_ID: with INSERT IGNORE,
the id passed in SET INSERT_ID is re-used until a row succeeds; SET INSERT_ID
influences not only the first row now.
Additionally, when unlocking a table we check that the thread is not keeping
a next_insert_id (as the table is unlocked that id is potentially out-of-date);
forgetting about this next_insert_id is done in a new
handler::ha_release_auto_increment().
Finally we prepare for engines capable of reserving finite-length intervals
of auto_increment values: we store such intervals in THD. The next step
(to be done by the replication team in 5.1) is to read those intervals from
THD and actually store them in the statement-based binary log. NDB
will be a good engine to test that.
mysql-test/extra/binlog_tests/binlog.test:
Testing that if INSERT_ID is set to a value too big for the
column's type, the binlogged INSERT_ID is the truncated value
(important if slave has a column of a "wider" numeric type).
Testing binlogging of INSERT_ID with INSERT DELAYED, to be sure that
we binlog an INSERT_ID event only for the delayed rows which use one.
mysql-test/extra/rpl_tests/rpl_insert_id.test:
Testcase for BUG#20339 "stored procedure using
LAST_INSERT_ID() does not replicate statement-based".
Testcase for BUG#20341 "stored function inserting into one
auto_increment puts bad data in slave".
mysql-test/extra/rpl_tests/rpl_loaddata.test:
Test that LOAD DATA INFILE sets a value for a future LAST_INSERT_ID().
mysql-test/r/auto_increment.result:
behaviour change: when INSERT totally fails (not even succeeds
partially and then rolls back), don't change last_insert_id().
Behaviour change: LAST_INSERT_ID() is now the first successfully inserted,
autogenerated, id.
Behaviour change: if INSERT ON DUPLICATE KEY UPDATE, if the table has auto_increment
and a row is updated, then LAST_INSERT_ID() returns the id of this row.
mysql-test/r/binlog_row_binlog.result:
result update
mysql-test/r/binlog_stm_binlog.result:
result update
mysql-test/r/insert.result:
result update
mysql-test/r/rpl_insert_id.result:
result update
mysql-test/r/rpl_loaddata.result:
result update
mysql-test/r/rpl_ndb_auto_inc.result:
ndb's behaviour is now like other engines wrt SET INSERT_ID
in a multi-row INSERT:
- with INSERT IGNORE: the id passed in SET INSERT_ID is re-used until
a row succeeds.
- generally, SET INSERT_ID sets the first value and other values are
simply computed from this first value, instead of previously where
the 2nd and subsequent values where not influenced by SET INSERT_ID;
this good change is due to the removal of "thd->next_insert_id=0"
from ha_ndbcluster.
mysql-test/t/auto_increment.test:
A testcase of BUG#19243: if ON DUPLICATE KEY UPDATE updates a row,
LAST_INSERT_ID() now returns the id of the row.
Test of new behaviour of last_insert_id() when no autogenerated value was
inserted, or when only some autogenerated value (not the first of them) was
inserted.
mysql-test/t/insert.test:
testing INSERT IGNORE re-using generated values
sql/ha_federated.cc:
update for new variables.
sql/ha_ndbcluster.cc:
handler::auto_increment_column_changed not needed, equivalent to
(insert_id_for_cur_row > 0).
thd->next_insert_id=0 not needed anymore; it was used to force
handler::update_auto_increment() to call ha_ndbcluster::get_auto_increment()
for each row of a multi-row INSERT, now this happens naturally
because NDB says "I have reserved you *one* value" in get_auto_increment(),
so handler::update_auto_increment() calls again for next row.
sql/handler.cc:
More comments, use of new methods and variables. Hopes to be clearer
than current code.
thd->prev_insert_id not in THD anymore: it is managed locally by inserters
(like mysql_insert()).
THD::clear_next_insert_id is now equivalent to
handler::next_insert_id > 0.
get_auto_increment() reserves an interval of values from the engine,
uses this interval for next rows of the statement, until interval
is exhausted then it asks for another interval (of a bigger size
than the first one; size doubles until reaching 65535 then it stays constant).
If doing statement-based binlogging, intervals are remembered in a list
for storage in the binlog.
For "forced" insert_id values (SET INSERT_ID or replication slave),
forced_auto_inc_intervals is non-empty and the handler takes its intervals
from there, without calling get_auto_increment().
ha_release_auto_increment() resets the handler's auto_increment variables;
it calls release_auto_increment() which is handler-dependent and
serves to return to the engine any unused tail of the last used
interval.
If ending a statement, next_insert_id>0 means that autoinc values have been
generated or taken from the master's binlog (in a replication slave) so
we clear those values read from binlog, so that next top- or sub-
statement does not use them.
sql/handler.h:
handler::auto_increment_changed can be replaced by
(handler::insert_id_for_cur_row > 0).
THD::next_insert_id moves into handler (more natural, and prepares
for the day when we'll support a single statement inserting into
two tables - "multi-table INSERT" like we have UPDATE - will this
happen?).
This move makes the backup/restore of THD::next_insert_id when entering
a substatement unneeded, as each substatement has its own handler
objects.
sql/item_func.cc:
new names for variables.
For the setting of what mysql_insert_id() will return to the client,
LAST_INSERT_ID(X) used to simply pretend that the generated autoinc
value for the current row was X, but this led to having no reliable
way to know the really generated value, so we now have a bool:
thd->arg_of_last_insert_id_function which enables us to know that
LAST_INSERT_ID(X) was called (and then X can be found in
thd->first_successful_insert_id_in_prev_stmt).
sql/log.cc:
new variable names for insert_ids. Removing some unused variables in the slow
log.
sql/log_event.cc:
new variable names, comments. Preparing for when master's won't binlog
LAST_INSERT_ID if it was 0.
sql/set_var.cc:
new variable names.
The last change repeats how Bar fixed BUG#20392
"INSERT_ID session variable has weird value" in 5.0.
sql/sql_class.cc:
new variables for insert_id. In THD::cleanup_after_query() we fix
BUG#20339 "stored procedure using LAST_INSERT_ID() does not replicate
statement-based" (will one want to fix it in 5.0?). Many comments
about what stored functions do to auto_increment.
In reset|restore_sub_statement_state(), we need to backup less
auto_inc variables as some of them have moved to the handler;
we backup/restore those which are about the current top- or sub-
statement, *not* those about the statement-based binlog
(which evolve as the top- and sub-statement execute).
Because we split THD::last_insert_id into
THD::first_successful_insert_id_in_prev_stmt and
THD::auto_inc_intervals_for_binlog (among others), we fix
BUG#20341 "stored function inserting into one auto_increment
puts bad data in slave": indeed we can afford to not backup/restore
THD::auto_inc_intervals_for_binlog (which fixes the bug) while still
backing up / restoring THD::first_successful_insert_id_in_prev_stmt
(ensuring that the top-level LAST_INSERT_ID() is not affected by INSERTs
done by sub-statements, as is desirable and tested in rpl_insert_id.test).
sql/sql_class.h:
new variables and methods for auto_increment.
Some THD members move into handler (those which are really about
the table being inserted), some stay in THD (those which are
about what a future LAST_INSERT_ID() should return, or about
what should be stored into the statement-based binlog).
THD::next_insert_id moves to handler::.
THD::clear_next_insert_id removed (had become equivalent
to next_insert_id > 0).
THD::last_insert_id becomes four:
THD::first_successful_insert_id_in_cur_stmt,
THD::auto_inc_intervals_for_binlog,
handler::insert_id_for_cur_row,
THD::first_successful_insert_id_in_prev_stmt.
THD::current_insert_id becomes:
THD::first_successful_insert_id_in_prev_stmt_for_binlog
THD::prev_insert_id is removed, handler can just use
handler::insert_id_for_cur_row instead (which is more accurate:
for the first row, prev_insert_id was set before get_auto_increment
was called, so was 0, causing a call to
get_auto_increment() for the 2nd row if the 1st row fails;
here we don't need the call as insert_id_for_cur_row has
the value of the first row).
THD::last_insert_id_used becomes: stmt_depends_on_first_row_in_prev_stmt
THD::insert_id_used is removed (equivalent to
auto_inc_intervals_for_binlog non empty).
The interval returned by get_auto_increment() and currently being
consumed is handler::auto_inc_interval_for_cur_row.
Comments to explain each of them.
select_insert::last_insert_id becomes autoinc_value_of_last_inserted_row.
sql/sql_insert.cc:
the "id" variable is not changed for each row now; it used to compensate for
this contradiction:
- thd->last_insert_id supposed job was to keep the id of the first row
- but it was updated for every row
- so mysql_insert() made sure to catch its first value and restore it at the end of stmt.
Now THD keeps the first value in first_successful_insert_id_in_cur_stmt,
and value of the row in insert_id_for_cur_row. So "id" only serves to fill
mysql_insert_id(), as depending on some conditions, "id" must be different
values.
Prev_insert_id moves from THD to write_record().
We now set LAST_INSERT_ID() in ON DUPLICATE KEY UPDATE too (BUG#19243).
In an INSERT DELAYED, we still "reset auto-increment caching" but differently
(by calling ha_release_auto_increment()).
sql/sql_load.cc:
no need to fiddle with "id", THD maintains
THD::first_successful_insert_id_in_cur_stmt by itself and correctly now.
ha_release_auto_increment() is now (logically) called before we unlock
the table.
sql/sql_parse.cc:
update to new variable names.
Assertion that reset_thd_for_next_command() is not called for every
substatement of a routine (I'm not against it, but if we do this change,
statement-based binlogging needs some adjustments).
sql/sql_select.cc:
update for new variable names
sql/sql_table.cc:
next_insert_id not needed in mysql_alter_table(), THD manages.
sql/sql_update.cc:
update for new variable names.
Even though this is UPDATE, an insert id can be generated (by
LAST_INSERT_ID(X)) and should be recorded because mysql_insert_id() wants
to know about it.
sql/structs.h:
A class for "discrete" intervals (intervals of integer numbers with a certain
increment between them): Discrete_interval, and a class for a list of such
intervals: Discrete_intervals_list
tests/mysql_client_test.c:
tests of behaviour of mysql_insert_id(): there were no such tests, while in
our manual we document its behaviour. In comments you'll notice the behaviour
changes introduced (there are 5).
this is a cleanup patch for our current auto_increment handling:
new names for auto_increment variables in THD, new methods to manipulate them
(see sql_class.h), some move into handler::, causing less backup/restore
work when executing substatements.
This makes the logic hopefully clearer, less work is is needed in
mysql_insert().
By cleaning up, using different variables for different purposes (instead
of one for 3 things...), we fix those bugs, which someone may want to fix
in 5.0 too:
BUG#20339 "stored procedure using LAST_INSERT_ID() does not replicate
statement-based"
BUG#20341 "stored function inserting into one auto_increment puts bad
data in slave"
BUG#19243 "wrong LAST_INSERT_ID() after ON DUPLICATE KEY UPDATE"
(now if a row is updated, LAST_INSERT_ID() will return its id)
and re-fixes:
BUG#6880 "LAST_INSERT_ID() value changes during multi-row INSERT"
(already fixed differently by Ramil in 4.1)
Test of documented behaviour of mysql_insert_id() (there was no test).
The behaviour changes introduced are:
- LAST_INSERT_ID() now returns "the first autogenerated auto_increment value
successfully inserted", instead of "the first autogenerated auto_increment
value if any row was successfully inserted", see auto_increment.test.
Same for mysql_insert_id(), see mysql_client_test.c.
- LAST_INSERT_ID() returns the id of the updated row if ON DUPLICATE KEY
UPDATE, see auto_increment.test. Same for mysql_insert_id(), see
mysql_client_test.c.
- LAST_INSERT_ID() does not change if no autogenerated value was successfully
inserted (it used to then be 0), see auto_increment.test.
- if in INSERT SELECT no autogenerated value was successfully inserted,
mysql_insert_id() now returns the id of the last inserted row (it already
did this for INSERT VALUES), see mysql_client_test.c.
- if INSERT SELECT uses LAST_INSERT_ID(X), mysql_insert_id() now returns X
(it already did this for INSERT VALUES), see mysql_client_test.c.
- NDB now behaves like other engines wrt SET INSERT_ID: with INSERT IGNORE,
the id passed in SET INSERT_ID is re-used until a row succeeds; SET INSERT_ID
influences not only the first row now.
Additionally, when unlocking a table we check that the thread is not keeping
a next_insert_id (as the table is unlocked that id is potentially out-of-date);
forgetting about this next_insert_id is done in a new
handler::ha_release_auto_increment().
Finally we prepare for engines capable of reserving finite-length intervals
of auto_increment values: we store such intervals in THD. The next step
(to be done by the replication team in 5.1) is to read those intervals from
THD and actually store them in the statement-based binary log. NDB
will be a good engine to test that.
into chilla.local:/home/mydev/mysql-5.0-bug16218
sql/field.cc:
Auto merged
sql/field.h:
Auto merged
sql/sql_insert.cc:
Auto merged
sql/sql_select.cc:
Auto merged
sql/sql_trigger.cc:
Auto merged
sql/table.cc:
Auto merged
into chilla.local:/home/mydev/mysql-5.1-ateam
sql/field.h:
Auto merged
sql/sql_select.cc:
Auto merged
sql/sql_trigger.cc:
Auto merged
sql/field.cc:
Manual merge
sql/sql_insert.cc:
Manual merge
sql/table.cc:
Manual merge
into dator5.(none):/home/pappa/bug17138
BUILD/compile-pentium-gcov:
Auto merged
sql/ha_ndbcluster.h:
Auto merged
sql/handler.h:
Auto merged
sql/sql_insert.cc:
Auto merged
sql/sql_select.cc:
Auto merged
sql/sql_table.cc:
Auto merged
Last round of review fixes
BUILD/compile-pentium-gcov:
No change
sql/ha_ndbcluster.h:
Last round of review changes
sql/ha_partition.h:
Last round of review changes
sql/handler.h:
Last round of review changes
sql/item_sum.cc:
Last round of review changes
sql/sql_acl.cc:
Last round of review changes
sql/sql_insert.cc:
Last round of review changes
sql/sql_select.cc:
Last round of review changes
sql/sql_table.cc:
Last round of review changes
sql/sql_union.cc:
Last round of review changes
sql/sql_update.cc:
Last round of review changes
into moonbone.local:/work/merge-5.1
mysql-test/r/ctype_ucs.result:
Auto merged
mysql-test/r/ctype_utf8.result:
Auto merged
mysql-test/t/ctype_ucs.test:
Auto merged
sql/item_cmpfunc.h:
Auto merged
sql/item_sum.cc:
Auto merged
sql/opt_range.cc:
Auto merged
sql/spatial.h:
Auto merged
sql/sql_select.cc:
Auto merged
sql/sql_select.h:
Auto merged
sql/sql_update.cc:
Auto merged
strings/ctype-mb.c:
Auto merged
- Don't forget to produce "partitions" column for "UNION RESULT" row of EXPLAIN output
mysql-test/r/partition_pruning.result:
BUG#20484: Testcase
mysql-test/t/partition_pruning.test:
BUG#20484: Testcase
mysql-test/r/distinct.result:
4.1->5.0 merge for bug #16458
* 5.0 is better in detecting duplicate columns
sql/sql_select.cc:
4.1->5.0 merge for bug #16458
* Should not do the optimization if using index for group by
* chnaged structures in 5.0
The problem was that we restored SQL_CACHE, SQL_NO_CACHE flags in SELECT
statement from internal structures based on value set later at runtime, not
the original value set by the user.
The solution is to remember that original value.
mysql-test/r/auto_increment.result:
Update result to not report SQL_NO_CACHE if it wasn't there at first place.
mysql-test/r/func_compress.result:
Update result to not report SQL_NO_CACHE if it wasn't there at first place.
mysql-test/r/func_math.result:
Update result to not report SQL_NO_CACHE if it wasn't there at first place.
mysql-test/r/func_system.result:
Update result to not report SQL_NO_CACHE if it wasn't there at first place.
mysql-test/r/func_time.result:
Update result to not report SQL_NO_CACHE if it wasn't there at first place.
mysql-test/r/information_schema.result:
Update result to not report SQL_NO_CACHE if it wasn't there at first place.
mysql-test/r/query_cache.result:
Update result to not report SQL_NO_CACHE if it wasn't there at first place.
mysql-test/r/rpl_get_lock.result:
Update result to not report SQL_NO_CACHE if it wasn't there at first place.
mysql-test/r/rpl_master_pos_wait.result:
Update result to not report SQL_NO_CACHE if it wasn't there at first place.
mysql-test/r/show_check.result:
Add result for bug#17203.
mysql-test/r/subselect.result:
Update result to not report SQL_NO_CACHE if it wasn't there at first place.
mysql-test/r/type_blob.result:
Update result to not report SQL_NO_CACHE if it wasn't there at first place.
mysql-test/r/variables.result:
Update result to not report SQL_NO_CACHE if it wasn't there at first place.
mysql-test/r/view.result:
Update result to not report SQL_NO_CACHE if it wasn't there at first place.
mysql-test/t/show_check.test:
Add test case for bug#17203.
sql/sql_lex.cc:
Reset SELECT_LEX::sql_cache together with SELECT_LEX::options.
sql/sql_lex.h:
Add SELECT_LEX::sql_cache field to store original user setting.
sql/sql_select.cc:
Output SQL_CACHE and SQL_NO_CACHE depending on stored original user setting.
sql/sql_yacc.yy:
Make effect of SQL_CACHE and SQL_NO_CACHE mutually exclusive. Ignore
SQL_CACHE if SQL_NO_CACHE was used. Remember what was set by the user.
Reset SELECT_LEX::sql_cache together with SELECT_LEX::options.
The problem was that we restored SQL_CACHE, SQL_NO_CACHE flags in SELECT
statement from internal structures based on value set later at runtime, not
the original value set by the user.
The solution is to remember that original value.
'SELECT DISTINCT a,b FROM t1' should not use temp table if there is unique
index (or primary key) on a.
There are a number of other similar cases that can be calculated without the
use of a temp table : multi-part unique indexes, primary keys or using GROUP BY
instead of DISTINCT.
When a GROUP BY/DISTINCT clause contains all key parts of a unique
index, then it is guaranteed that the fields of the clause will be
unique, therefore we can optimize away GROUP BY/DISTINCT altogether.
This optimization has two effects:
* there is no need to create a temporary table to compute the
GROUP/DISTINCT operation (or the temporary table will be smaller if only GROUP
is removed and DISTINCT stays or if DISTINCT is removed and GROUP BY stays)
* this causes the statement in effect to become updatable in Connector/Java
because the result set columns will be direct reference to the primary key of
the table (instead to the temporary table that it currently references).
Implemented a check that will optimize away GROUP BY/DISTINCT for queries like
the above.
Currently it will work only for single non-constant table in the FROM clause.
mysql-test/r/distinct.result:
Bug #16458: Simple SELECT FOR UPDATE causes "Result Set not updatable" error
- test case
mysql-test/t/distinct.test:
Bug #16458: Simple SELECT FOR UPDATE causes "Result Set not updatable" error
- test case
sql/sql_select.cc:
Bug #16458: Simple SELECT FOR UPDATE causes "Result Set not updatable" error
- disable GROUP BY if contains the fields of a unique index.
'SELECT DISTINCT a,b FROM t1' should not use temp table if there is unique
index (or primary key) on a.
There are a number of other similar cases that can be calculated without the
use of a temp table : multi-part unique indexes, primary keys or using GROUP BY
instead of DISTINCT.
When a GROUP BY/DISTINCT clause contains all key parts of a unique
index, then it is guaranteed that the fields of the clause will be
unique, therefore we can optimize away GROUP BY/DISTINCT altogether.
This optimization has two effects:
* there is no need to create a temporary table to compute the
GROUP/DISTINCT operation (or the temporary table will be smaller if only GROUP
is removed and DISTINCT stays or if DISTINCT is removed and GROUP BY stays)
* this causes the statement in effect to become updatable in Connector/Java
because the result set columns will be direct reference to the primary key of
the table (instead to the temporary table that it currently references).
Implemented a check that will optimize away GROUP BY/DISTINCT for queries like
the above.
Currently it will work only for single non-constant table in the FROM clause.
Bug#17294 - INSERT DELAYED puting an \n before data
Bug#16611 - INSERT DELAYED corrupts data
Bug#13707 - Server crash with INSERT DELAYED on MyISAM table
Combined as Bug#16218.
INSERT DELAYED crashed in 5.0 on a table with a varchar that
could be NULL and was created pre-5.0 (Bugs 16218 and 13707).
INSERT DELAYED corrupted data in 5.0 on a table with varchar
fields that was created pre-5.0 (Bugs 17294 and 16611).
In case of INSERT DELAYED the open table is copied from the
delayed insert thread to be able to create a record for the
queue. When copying the fields, a method was used that did
convert old varchar to new varchar fields and did not set up
some pointers into the record buffer of the table.
The field conversion was guilty for the misinterpretation of
the record contents by the delayed insert thread. The wrong
pointer setup was guilty for the crashes.
For Bug 13707 (Server crash with INSERT DELAYED on MyISAM table)
I fixed the above mentioned method to set up one of the pointers.
For Bug 16218 I set up the other pointers too.
But when looking at the corruptions I got aware that converting
the field type was totally wrong for INSERT DELAYED. The copied
table is used to create a record that is to be sent to the
delayed insert thread. Of course it can interpret the record
correctly only if all field types are the same in both table
objects.
So I revoked the fix for Bug 13707 and changed the new_field()
method so that it can suppress conversions.
No test case as this is a migration problem. One needs to
create a table with 4.x and use it with 5.x. I added two
test scripts to the bug report.
sql/field.cc:
Bug#16218 - Crash on insert delayed
Bug#17294 - INSERT DELAYED puting an \n before data
Bug#16611 - INSERT DELAYED corrupts data
Bug#13707 - Server crash with INSERT DELAYED on MyISAM table
Combined as Bug#16218.
Added parameter 'keep_type' to Field::new_field().
Undid the change from Bug 13707 (Server crash with INSERT
DELAYED on MyISAM table).
I solved all four bugs in sql/sql_insert.cc by making exact
duplicates of the fields. The new_field() method converts
certain field types, which is wrong for INSERT DELAYED.
sql/field.h:
Bug#13707 - Server crash with INSERT DELAYED on MyISAM table
Combined as Bug#16218.
Added parameter 'keep_type' to Field::new_field().
sql/sql_insert.cc:
Bug#16218 - Crash on insert delayed
Bug#17294 - INSERT DELAYED puting an \n before data
Bug#16611 - INSERT DELAYED corrupts data
Bug#13707 - Server crash with INSERT DELAYED on MyISAM table
Combined as Bug#16218.
Added comments. Made small style fixes.
Used the new parameter 'keep_type' of Field::new_field()
to avoid field type conversion. The table copy must have
exactly the same types of fields as the original table.
Otherwise the record contents created by the foreground
thread could be misinterpreted by the delayed insert thread.
sql/sql_select.cc:
Bug#16218 - Crash on insert delayed
Bug#17294 - INSERT DELAYED puting an \n before data
Bug#16611 - INSERT DELAYED corrupts data
Bug#13707 - Server crash with INSERT DELAYED on MyISAM table
Combined as Bug#16218.
Added parameter 'keep_type' to Field::new_field().
Undid the change from Bug 13707 (Server crash with INSERT
DELAYED on MyISAM table).
I solved all four bugs in sql/sql_insert.cc by making exact
duplicates of the fields. The new_field() method converts
certain field types, which is wrong for INSERT DELAYED.
sql/sql_trigger.cc:
Bug#16218 - Crash on insert delayed
Bug#17294 - INSERT DELAYED puting an \n before data
Bug#16611 - INSERT DELAYED corrupts data
Bug#13707 - Server crash with INSERT DELAYED on MyISAM table
Combined as Bug#16218.
Added parameter 'keep_type' to Field::new_field().
Undid the change from Bug 13707 (Server crash with INSERT
DELAYED on MyISAM table).
I solved all four bugs in sql/sql_insert.cc by making exact
duplicates of the fields. The new_field() method converts
certain field types, which is wrong for INSERT DELAYED.
sql/table.cc:
Bug#16218 - Crash on insert delayed
Bug#17294 - INSERT DELAYED puting an \n before data
Bug#16611 - INSERT DELAYED corrupts data
Bug#13707 - Server crash with INSERT DELAYED on MyISAM table
Combined as Bug#16218.
Added parameter 'keep_type' to Field::new_field().
Undid the change from Bug 13707 (Server crash with INSERT
DELAYED on MyISAM table).
I solved all four bugs in sql/sql_insert.cc by making exact
duplicates of the fields. The new_field() method converts
certain field types, which is wrong for INSERT DELAYED.
Bug#17294 - INSERT DELAYED puting an \n before data
Bug#16611 - INSERT DELAYED corrupts data
Bug#13707 - Server crash with INSERT DELAYED on MyISAM table
Combined as Bug#16218.
INSERT DELAYED crashed in 5.0 on a table with a varchar that
could be NULL and was created pre-5.0 (Bugs 16218 and 13707).
INSERT DELAYED corrupted data in 5.0 on a table with varchar
fields that was created pre-5.0 (Bugs 17294 and 16611).
In case of INSERT DELAYED the open table is copied from the
delayed insert thread to be able to create a record for the
queue. When copying the fields, a method was used that did
convert old varchar to new varchar fields and did not set up
some pointers into the record buffer of the table.
The field conversion was guilty for the misinterpretation of
the record contents by the delayed insert thread. The wrong
pointer setup was guilty for the crashes.
For Bug 13707 (Server crash with INSERT DELAYED on MyISAM table)
I fixed the above mentioned method to set up one of the pointers.
For Bug 16218 I set up the other pointers too.
But when looking at the corruptions I got aware that converting
the field type was totally wrong for INSERT DELAYED. The copied
table is used to create a record that is to be sent to the
delayed insert thread. Of course it can interpret the record
correctly only if all field types are the same in both table
objects.
So I revoked the fix for Bug 13707 and changed the new_field()
method so that it can suppress conversions.
No test case as this is a migration problem. One needs to
create a table with 4.x and use it with 5.x. I added two
test scripts to the bug report.
into mysql.com:/home/emurphy/src/bk-clean/mysql-5.1
mysql-test/mysql-test-run.sh:
Auto merged
mysql-test/valgrind.supp:
Auto merged
mysql-test/r/func_str.result:
Auto merged
mysql-test/r/insert_select.result:
Auto merged
mysql-test/r/myisam.result:
Auto merged
mysql-test/t/func_time.test:
Auto merged
mysql-test/t/myisam.test:
Auto merged
mysql-test/t/select.test:
Auto merged
mysys/Makefile.am:
Auto merged
sql/field.cc:
Auto merged
sql/field.h:
Auto merged
sql/ha_ndbcluster.cc:
Auto merged
sql/item_cmpfunc.cc:
Auto merged
sql/item_strfunc.cc:
Auto merged
sql/item_strfunc.h:
Auto merged
sql/mysqld.cc:
Auto merged
sql/opt_sum.cc:
Auto merged
sql/slave.cc:
Auto merged
sql/sql_select.cc:
Auto merged
storage/ndb/src/kernel/blocks/dbdih/DbdihMain.cpp:
Auto merged
storage/ndb/src/ndbapi/ndberror.c:
Auto merged
include/Makefile.am:
manual merge
mysql-test/r/func_time.result:
manual merge
mysql-test/r/select.result:
manual merge
Review comments
mysql-test/t/partition.test:
Changed procedure names ensured procedures were dropped
sql/ha_ndbcluster.h:
Improved name of method
sql/ha_partition.h:
Improved name of method
sql/handler.h:
Improved name of method
Removed deprecated constants
sql/item_sum.cc:
Improved name of method
sql/sql_acl.cc:
Improved name of method
sql/sql_insert.cc:
Removed use of HA_WRITE_SKIP and introduced is_fatal_error instead
sql/sql_select.cc:
Improved name of method
sql/sql_table.cc:
Improved name of method
Reintroduced dead code for future possible use
sql/sql_union.cc:
Improved name of method
sql/sql_update.cc:
Improved name of method
Additional fix for #16377 for bigendian platforms
sql_select.cc, select.result, select.test:
After merge fix
mysql-test/t/select.test:
After merge fix
mysql-test/r/select.result:
After merge fix
sql/sql_select.cc:
After merge fix
sql/field.h:
Additional fix for #16377 for bigendian platforms
sql/field.cc:
Additional fix for #16377 for bigendian platforms
