| Commit message (Collapse) | Author | Age | Files | Lines |
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no_error handling for select (used by INSERT ... SELECT) still needs to be fixed, but I will do that in a separate commit
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Fixed up copyright messages.
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Assertion happens due to missing NULL value check in
Item_func_round::fix_length_and_dec() function.
The fix: added NULL value check for second parameter.
mysql-test/r/func_math.result:
test case
mysql-test/t/func_math.test:
test case
sql/item_func.cc:
added NULL value check for second parameter.
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In sql_class.cc, 'row_count', of type 'ha_rows', was used as last argument for
ER_TRUNCATED_WRONG_VALUE_FOR_FIELD which is
"Incorrect %-.32s value: '%-.128s' for column '%.192s' at row %ld".
So 'ha_rows' was used as 'long'.
On SPARC32 Solaris builds, 'long' is 4 bytes and 'ha_rows' is 'longlong' i.e. 8 bytes.
So the printf-like code was reading only the first 4 bytes.
Because the CPU is big-endian, 1LL is 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x01
so the first four bytes yield 0. So the warning message had "row 0" instead of
"row 1" in test outfile_loaddata.test:
-Warning 1366 Incorrect string value: '\xE1\xE2\xF7' for column 'b' at row 1
+Warning 1366 Incorrect string value: '\xE1\xE2\xF7' for column 'b' at row 0
All error-messaging functions which internally invoke some printf-life function
are potential candidate for such mistakes.
One apparently easy way to catch such mistakes is to use
ATTRIBUTE_FORMAT (from my_attribute.h).
But this works only when call site has both:
a) the format as a string literal
b) the types of arguments.
So:
func(ER(ER_BLAH), 10);
will silently not be checked, because ER(ER_BLAH) is not known at
compile time (it is known at run-time, and depends on the chosen
language).
And
func("%s", a va_list argument);
has the same problem, as the *real* type of arguments is not
known at this site at compile time (it's known in some caller).
Moreover,
func(ER(ER_BLAH));
though possibly correct (if ER(ER_BLAH) has no '%' markers), will not
compile (gcc says "error: format not a string literal and no format
arguments").
Consequences:
1) ATTRIBUTE_FORMAT is here added only to functions which in practice
take "string literal" formats: "my_error_reporter" and "print_admin_msg".
2) it cannot be added to the other functions: my_error(),
push_warning_printf(), Table_check_intact::report_error(),
general_log_print().
To do a one-time check of functions listed in (2), the following
"static code analysis" has been done:
1) replace
my_error(ER_xxx, arguments for substitution in format)
with the equivalent
my_printf_error(ER_xxx,ER(ER_xxx), arguments for substitution in
format),
so that we have ER(ER_xxx) and the arguments *in the same call site*
2) add ATTRIBUTE_FORMAT to push_warning_printf(),
Table_check_intact::report_error(), general_log_print()
3) replace ER(xxx) with the hard-coded English text found in
errmsg.txt (like: ER(ER_UNKNOWN_ERROR) is replaced with
"Unknown error"), so that a call site has the format as string literal
4) this way, ATTRIBUTE_FORMAT can effectively do its job
5) compile, fix errors detected by ATTRIBUTE_FORMAT
6) revert steps 1-2-3.
The present patch has no compiler error when submitted again to the
static code analysis above.
It cannot catch all problems though: see Field::set_warning(), in
which a call to push_warning_printf() has a variable error
(thus, not replacable by a string literal); I checked set_warning() calls
by hand though.
See also WL 5883 for one proposal to avoid such bugs from appearing
again in the future.
The issues fixed in the patch are:
a) mismatch in types (like 'int' passed to '%ld')
b) more arguments passed than specified in the format.
This patch resolves mismatches by changing the type/number of arguments,
not by changing error messages of sql/share/errmsg.txt. The latter would be wrong,
per the following old rule: errmsg.txt must be as stable as possible; no insertions
or deletions of messages, no changes of type or number of printf-like format specifiers,
are allowed, as long as the change impacts a message already released in a GA version.
If this rule is not followed:
- Connectors, which use error message numbers, will be confused (by insertions/deletions
of messages)
- using errmsg.sys of MySQL 5.1.n with mysqld of MySQL 5.1.(n+1)
could produce wrong messages or crash; such usage can easily happen if
installing 5.1.(n+1) while /etc/my.cnf still has --language=/path/to/5.1.n/xxx;
or if copying mysqld from 5.1.(n+1) into a 5.1.n installation.
When fixing b), I have verified that the superfluous arguments were not used in the format
in the first 5.1 GA (5.1.30 'bteam@astra04-20081114162938-z8mctjp6st27uobm').
Had they been used, then passing them today, even if the message doesn't use them
anymore, would have been necessary, as explained above.
include/my_getopt.h:
this function pointer is used only with "string literal" formats, so we can add
ATTRIBUTE_FORMAT.
mysql-test/collections/default.experimental:
test should pass now
sql/derror.cc:
by having a format as string literal, ATTRIBUTE_FORMAT check becomes effective.
sql/events.cc:
Change justified by the following excerpt from sql/share/errmsg.txt:
ER_EVENT_SAME_NAME
eng "Same old and new event name"
ER_EVENT_SET_VAR_ERROR
eng "Error during starting/stopping of the scheduler. Error code %u"
sql/field.cc:
ER_TOO_BIG_SCALE 42000 S1009
eng "Too big scale %d specified for column '%-.192s'. Maximum is %lu."
ER_TOO_BIG_PRECISION 42000 S1009
eng "Too big precision %d specified for column '%-.192s'. Maximum is %lu."
ER_TOO_BIG_DISPLAYWIDTH 42000 S1009
eng "Display width out of range for column '%-.192s' (max = %lu)"
sql/ha_ndbcluster.cc:
ER_OUTOFMEMORY HY001 S1001
eng "Out of memory; restart server and try again (needed %d bytes)"
(sizeof() returns size_t)
sql/ha_ndbcluster_binlog.cc:
Too many arguments for:
ER_GET_ERRMSG
eng "Got error %d '%-.100s' from %s"
Patch by Jonas Oreland.
sql/ha_partition.cc:
print_admin_msg() is used only with a literal as format, so ATTRIBUTE_FORMAT
works.
sql/handler.cc:
ER_OUTOFMEMORY HY001 S1001
eng "Out of memory; restart server and try again (needed %d bytes)"
(sizeof() returns size_t)
sql/item_create.cc:
ER_TOO_BIG_SCALE 42000 S1009
eng "Too big scale %d specified for column '%-.192s'. Maximum is %lu."
ER_TOO_BIG_PRECISION 42000 S1009
eng "Too big precision %d specified for column '%-.192s'. Maximum is %lu."
'c_len' and 'c_dec' are char*, passed as %d !! We don't know their value
(as strtoul() failed), but they are likely big, so we use INT_MAX.
'len' is ulong.
sql/item_func.cc:
ER_WARN_DATA_OUT_OF_RANGE 22003
eng "Out of range value for column '%s' at row %ld"
ER_CANT_FIND_UDF
eng "Can't load function '%-.192s'"
sql/item_strfunc.cc:
ER_TOO_BIG_FOR_UNCOMPRESS
eng "Uncompressed data size too large; the maximum size is %d (probably, length of uncompressed data was corrupted)"
max_allowed_packet is ulong.
sql/mysql_priv.h:
sql_print_message_func is a function _pointer_.
sql/sp_head.cc:
ER_SP_RECURSION_LIMIT
eng "Recursive limit %d (as set by the max_sp_recursion_depth variable) was exceeded for routine %.192s"
max_sp_recursion_depth is ulong
sql/sql_acl.cc:
ER_PASSWORD_NO_MATCH 42000
eng "Can't find any matching row in the user table"
ER_CANT_CREATE_USER_WITH_GRANT 42000
eng "You are not allowed to create a user with GRANT"
sql/sql_base.cc:
ER_NOT_KEYFILE
eng "Incorrect key file for table '%-.200s'; try to repair it"
ER_TOO_MANY_TABLES
eng "Too many tables; MySQL can only use %d tables in a join"
MAX_TABLES is size_t.
sql/sql_binlog.cc:
ER_UNKNOWN_ERROR
eng "Unknown error"
sql/sql_class.cc:
ER_TRUNCATED_WRONG_VALUE_FOR_FIELD
eng "Incorrect %-.32s value: '%-.128s' for column '%.192s' at row %ld"
WARN_DATA_TRUNCATED 01000
eng "Data truncated for column '%s' at row %ld"
sql/sql_connect.cc:
ER_HANDSHAKE_ERROR 08S01
eng "Bad handshake"
ER_BAD_HOST_ERROR 08S01
eng "Can't get hostname for your address"
sql/sql_insert.cc:
ER_WRONG_VALUE_COUNT_ON_ROW 21S01
eng "Column count doesn't match value count at row %ld"
sql/sql_parse.cc:
ER_WARN_HOSTNAME_WONT_WORK
eng "MySQL is started in --skip-name-resolve mode; you must restart it without this switch for this grant to work"
ER_TOO_HIGH_LEVEL_OF_NESTING_FOR_SELECT
eng "Too high level of nesting for select"
ER_UNKNOWN_ERROR
eng "Unknown error"
sql/sql_partition.cc:
ER_OUTOFMEMORY HY001 S1001
eng "Out of memory; restart server and try again (needed %d bytes)"
sql/sql_plugin.cc:
ER_OUTOFMEMORY HY001 S1001
eng "Out of memory; restart server and try again (needed %d bytes)"
sql/sql_prepare.cc:
ER_OUTOFMEMORY HY001 S1001
eng "Out of memory; restart server and try again (needed %d bytes)"
ER_UNKNOWN_STMT_HANDLER
eng "Unknown prepared statement handler (%.*s) given to %s"
length value (for '%.*s') must be 'int', per the doc of printf()
and the code of my_vsnprintf().
sql/sql_show.cc:
ER_OUTOFMEMORY HY001 S1001
eng "Out of memory; restart server and try again (needed %d bytes)"
sql/sql_table.cc:
ER_TOO_BIG_FIELDLENGTH 42000 S1009
eng "Column length too big for column '%-.192s' (max = %lu); use BLOB or TEXT instead"
sql/table.cc:
ER_NOT_FORM_FILE
eng "Incorrect information in file: '%-.200s'"
ER_COL_COUNT_DOESNT_MATCH_PLEASE_UPDATE
eng "Column count of mysql.%s is wrong. Expected %d, found %d. Created with MySQL %d, now running %d. Please use mysql_upgrade to fix this error."
table->s->mysql_version is ulong.
sql/unireg.cc:
ER_TOO_LONG_TABLE_COMMENT
eng "Comment for table '%-.64s' is too long (max = %lu)"
ER_TOO_LONG_FIELD_COMMENT
eng "Comment for field '%-.64s' is too long (max = %lu)"
ER_TOO_BIG_ROWSIZE 42000
eng "Row size too large. The maximum row size for the used table type, not counting BLOBs, is %ld. You have to change some columns to TEXT or BLOBs"
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One can set @@global.max_user_connections to -1 to block anyone, except SUPER user, to login.
If max_user_connection is 0, one can't change it without a restart (needed to get user connections counting to work correctly)
mysql-test/r/system_mysql_db.result:
Changed max_user_connections to handle negative numbers.
mysql-test/r/user_limits-2.result:
New test case that one can't change max_user_connection if it was 0
mysql-test/r/user_limits.result:
Fixed wrong error messages.
mysql-test/r/variables.result:
Store / restore max_user_connections (needed as there is now a --master.opt file that changes it)
mysql-test/t/subselect_mat_cost-master.opt:
Enable slow query log (as this test found some errors in slow query logging)
mysql-test/t/user_limits-2.test:
New test case that one can't change max_user_connection if it was 0
mysql-test/t/user_limits-master.opt:
Set max_user_connections (as one can't change it if it was 0)
mysql-test/t/user_limits.test:
Test max_user_connections -1
mysql-test/t/variables-master.opt:
Set max_user_connections (as one can't change it if it was 0)
mysql-test/t/variables.test:
Set/restore max_user_connections
scripts/Makefile.am:
Add a text message to mysql_fix_privilege_tables.sql that it's automaticly generated
scripts/mysql_system_tables.sql:
Change max_user_connections to signed
scripts/mysql_system_tables_fix.sql:
Change max_user_connections to signed
sql/item_func.cc:
Change SHOW_INT to be signed.
(Needed for max_user_connections and it's probably a bug that it was not originally signed)
sql/log.cc:
Remove some code that was not needed (All these variables are reset at start of query)
sql/mysql_priv.h:
Made max_user_connections signed.
Added max_user_connections_checking
sql/mysqld.cc:
Added max_user_connections_checking so that we know if max_user_connections was 0 at startup
(Which means that we will not do connection counting for accounts that don't have user resource limits)
Set thd->start_utime at same time as thr_create_utime. (Before start_utime could be < thr_create_utime which lead to wrong query counting)
sql/set_var.cc:
Don't allow one to change 'max_user_connections' if it was 0 at startup.
sql/sql_acl.cc:
Change user_connection counting to be negative.
sql/sql_connect.cc:
If max_user_connections is < 0 then only SUPER user can login.
Fixed wrong variable names for error messages.
Fixed wrong initial value for questions.
Set thd->start_utime and thd->thr_create_utime at startup. Needed to get time_out_user_resource_limits() to work.
sql/sql_show.cc:
SHOW_INT is now negative
sql/sql_yacc.yy:
Support negative values for MAX_USER_CONNECTIONS
sql/structs.h:
Make user connect counting work with signed numbers.
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subquery in HAVING
- The problem was that the code that made the check whether the subquery is an AND-part of the WHERE
clause didn't work correctly for nested subqueries. In particular, grand-child subquery in HAVING was
treated as if it was in the WHERE, which eventually caused an assert when replace_where_subcondition
looked for the subquery predicate in the WHERE and couldn't find it there.
- The fix: Removed implementation of "thd_marker approach". thd->thd_marker was used to determine the
location of subquery predicate: setup_conds() would set accordingly it when making the
{where|on_expr}->fix_fields(...)
call so that AND-parts of the WHERE/ON clauses can determine they are the AND-parts.
Item_cond_or::fix_fields(), Item_func::fix_fields(), Item_subselect::fix_fields (this one was missed),
and all other items-that-contain-items had to reset thd->thd_marker before calling fix_fields() for
their children items, so that the children can see they are not AND-parts of WHERE/ON.
- The "thd_marker approach" required that a lot of code in different locations maintains correct value of
thd->thd_marker, so it was replaced with:
- The new approach with mark_as_condition_AND_part does not keep context in thd->thd_marker. Instead,
setup_conds() now calls
{where|on_expr}->mark_as_condition_AND_part()
and implementations of that function make sure that:
- parts of AND-expressions get the mark_as_condition_AND_part() call
- Item_in_subselect objects record that they are AND-parts of WHERE/ON
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Missing initialization of the bitmap not_null_tables_cache to 0
in the function Item_func::eval_not_null_tables caused this bug.
This function is called indirectly from the function
SELECT_LEX::update_used_tables after merging mergeable views and
derived tables into the main query. The leaf tables of resulting
query may change their bitmap numbers after this merge. That's why
the not_null_tables_cache bitmaps must be updated. Due to the bug
mentioned above the result of the re-evaluation of the
not_null_tables_cache turned out to be incorrect in some cases.
This could trigger an invalid conversion of outer joins into
inner joins leading to invalid query result sets.
Also removed an implicit conversion from int to bool in the function
SELECT_LEX::update_used_tables.
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Resolved all conflicts and failures.
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Item_func_set_user_var::fix_fields.
Adjusted the result files in the pbxt, innodb and innodb_plugin suites.
Commented out a failing test case in innodb.innodb_multi_update.test.
It should be returned back when the problem with multi-update of derived
tables (bug 784297) is resolved.
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Resolved all conflicts, bad merges and fixed a few minor bugs in the code.
Commented out the queries from multi_update, view, subselect_sj, func_str,
derived_view, view_grant that failed either with crashes in ps-protocol or
with wrong results.
The failures are clear indications of some bugs in the code and these bugs
are to be fixed.
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Resolved conflicts. Adjusted some test results
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The main consolidated patch.
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microsecond(TIME)
alter table datetime<->datetime(6)
max(TIME), mix(TIME)
mysql-test/t/func_if.test:
fix the test case of avoid overflow
sql/field.cc:
don't use make_date() and make_time()
sql/field.h:
correct eq_def() for temporal fields
sql/item.cc:
move datetime caching from Item_cache_int
to Item_cache_temporal
sql/item.h:
move datetime caching from Item_cache_int
to Item_cache_temporal
sql/item_func.cc:
use existing helper methods, don't duplicate
sql/item_sum.cc:
argument cache must use argument's cmp_type, not result_type.
sql/item_timefunc.cc:
use existing methods, don't tuplicate.
remove unused function.
fix micorseconds() to support TIME argument
sql/mysql_priv.h:
dead code
sql/time.cc:
dead code
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compilation error in mysys/my_getsystime.c fixed
some redundant code removed
sec_to_time, time_to_sec, from_unixtime, unix_timestamp, @@timestamp now
use decimal, not double for numbers with a fractional part.
purge_master_logs_before_date() fixed
many bugs in corner cases fixed
mysys/my_getsystime.c:
compilation failure fixed
sql/sql_parse.cc:
don't cut corners. it backfires.
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A lot of small fixes and new test cases.
client/mysqlbinlog.cc:
Cast removed
client/mysqltest.cc:
Added missing DBUG_RETURN
include/my_pthread.h:
set_timespec_time_nsec() now only takes one argument
mysql-test/t/date_formats.test:
Remove --disable_ps_protocl as now also ps supports microseconds
mysys/my_uuid.c:
Changed to use my_interval_timer() instead of my_getsystime()
mysys/waiting_threads.c:
Changed to use my_hrtime()
sql/field.h:
Added bool special_const_compare() for fields that may convert values before compare (like year)
sql/field_conv.cc:
Added test to get optimal copying of identical temporal values.
sql/item.cc:
Return that item_int is equal if it's positive, even if unsigned flag is different.
Fixed Item_cache_str::save_in_field() to have identical null check as other similar functions
Added proper NULL check to Item_cache_int::save_in_field()
sql/item_cmpfunc.cc:
Don't call convert_constant_item() if there is nothing that is worth converting.
Simplified test when years should be converted
sql/item_sum.cc:
Mark cache values in Item_sum_hybrid as not constants to ensure they are not replaced by other cache values in compare_datetime()
sql/item_timefunc.cc:
Changed sec_to_time() to take a my_decimal argument to ensure we don't loose any sub seconds.
Added Item_temporal_func::get_time() (This simplifies some things)
sql/mysql_priv.h:
Added Lazy_string_decimal()
sql/mysqld.cc:
Added my_decimal constants max_seconds_for_time_type, time_second_part_factor
sql/table.cc:
Changed expr_arena to be of type CONVENTIONAL_EXECUTION to ensure that we don't loose any items that are created by fix_fields()
sql/tztime.cc:
TIME_to_gmt_sec() now sets *in_dst_time_gap in case of errors
This is needed to be able to detect if timestamp is 0
storage/maria/lockman.c:
Changed from my_getsystime() to set_timespec_time_nsec()
storage/maria/ma_loghandler.c:
Changed from my_getsystime() to my_hrtime()
storage/maria/ma_recovery.c:
Changed from my_getsystime() to mmicrosecond_interval_timer()
storage/maria/unittest/trnman-t.c:
Changed from my_getsystime() to mmicrosecond_interval_timer()
storage/xtradb/handler/ha_innodb.cc:
Added support for new time,datetime and timestamp
unittest/mysys/thr_template.c:
my_getsystime() -> my_interval_timer()
unittest/mysys/waiting_threads-t.c:
my_getsystime() -> my_interval_timer()
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sql/event_parse_data.cc:
don't use "not_used" variable
sql/item_timefunc.cc:
Item_temporal_func::fix_length_and_dec()
and other changes
sql/item_timefunc.h:
introducing Item_timefunc::fix_length_and_dec()
sql/share/errmsg.txt:
don't say "column X" in the error message that used not only for columns
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implement Item_func_min_max::get_date()
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and a test case for lp:736370 Datetime functions in subquery context cause wrong result
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and collateral changes.
* introduce my_hrtime_t, my_timediff_t, and conversion macros
* inroduce TIME_RESULT, but it can only be returned from Item::cmp_type(),
never from Item::result_type()
* pack_time/unpack_time function for "packed" representation of
MYSQL_TIME in a longlong that can be compared
* ADDTIME()/SUBTIME()/+- INTERVAL now work with TIME values
* numbers aren't quoted in EXPLAIN EXTENDED
* new column I_S.COLUMNS.DATETIME_PRECISION
* date/time values are compares to anything as date/time, not as strings or numbers.
* old timestamp(X) is no longer supported
* MYSQL_TIME to string conversion functions take precision as an argument
* unified the warnings from Field_timestamp/datetime/time/date/newdate store methods
* Field_timestamp_hires, Field_datetime_hires, Field_time_hires
* Field_temporal
* Lazy_string class to pass a value (string, number, time) polymorphically down the stack
* make_truncated_value_warning and Field::set_datetime_warning use Lazy_string as an argument, removed char*/int/double variants
* removed Field::can_be_compared_as_longlong(). Use Field::cmp_type() == INT_RESULT instead
* introduced Item::cmp_result() instead of Item::is_datetime() and Item::result_as_longlong()
* in many cases date/time types are treated like other types, not as special cases
* greatly simplified Arg_comparator (regarding date/time/year code)
* SEC_TO_TIME is real function, not integer.
* microsecond precision in NOW, CURTIME, etc
* Item_temporal. All items derived from it only provide get_date, but no val* methods
* replication of NOW(6)
* Protocol::store(time) now takes the precision as an argument
* @@TIMESTAMP is a double
client/mysqlbinlog.cc:
remove unneded casts
include/my_sys.h:
introduce my_hrtime_t, my_timediff_t, and conversion macros
include/my_time.h:
pack_time/unpack_time, etc.
convenience functions to work with MYSQL_TIME::second_part
libmysql/libmysql.c:
str_to_time() is gone. str_to_datetime() does it now.
my_TIME_to_str() takes the precision as an argument
mysql-test/include/ps_conv.inc:
time is not equal to datetime anymore
mysql-test/r/distinct.result:
a test for an old MySQL bug
mysql-test/r/explain.result:
numbers aren't quoted in EXPLAIN EXTENDED
mysql-test/r/func_default.result:
numbers aren't quoted in EXPLAIN EXTENDED
mysql-test/r/func_sapdb.result:
when decimals=NOT_FIXED_DEC it means "not fixed" indeed
mysql-test/r/func_test.result:
numbers aren't quoted in EXPLAIN EXTENDED
mysql-test/r/func_time.result:
ADDTIME()/SUBTIME()/+- INTERVAL now work with TIME values
mysql-test/r/having.result:
numbers aren't quoted in EXPLAIN EXTENDED
mysql-test/r/information_schema.result:
new column I_S.COLUMNS.DATETIME_PRECISION
mysql-test/r/join_outer.result:
numbers aren't quoted in EXPLAIN EXTENDED
mysql-test/r/metadata.result:
TIMESTAMP no longer has zerofill flag
mysql-test/r/range.result:
invalid datetime is not compared with as a string
mysql-test/r/select.result:
NO_ZERO_IN_DATE, etc only affect storage - according to the manual
numbers aren't quoted in EXPLAIN EXTENDED
mysql-test/r/subselect.result:
numbers aren't quoted in EXPLAIN EXTENDED
mysql-test/r/sysdate_is_now.result:
when decimals=NOT_FIXED_DEC it means "not fixed" indeed
mysql-test/r/type_blob.result:
TIMESTAMP(N) is not deprecated
mysql-test/r/type_timestamp.result:
old TIMESTAMP(X) semantics is not supported anymore
mysql-test/r/union.result:
numbers aren't quoted in EXPLAIN EXTENDED
mysql-test/r/varbinary.result:
numbers aren't quoted in EXPLAIN EXTENDED
mysql-test/t/distinct.test:
test for an old MySQL bug
mysql-test/t/func_time.test:
+- INTERVAL now works with TIME values
mysql-test/t/select.test:
typo
mysql-test/t/subselect.test:
only one error per statement, please
mysql-test/t/system_mysql_db_fix40123.test:
old timestamp(X) is no longer supported
mysql-test/t/system_mysql_db_fix50030.test:
old timestamp(X) is no longer supported
mysql-test/t/system_mysql_db_fix50117.test:
old timestamp(X) is no longer supported
mysql-test/t/type_blob.test:
old timestamp(X) is no longer supported
mysql-test/t/type_timestamp.test:
old timestamp(X) is no longer supported
mysys/my_getsystime.c:
functions to get the time with microsecond precision
mysys/my_init.c:
move the my_getsystime.c initialization code to my_getsystime.c
mysys/my_static.c:
no need to make these variables extern
mysys/my_static.h:
no need to make these variables extern
scripts/mysql_system_tables.sql:
old timestamp(X) is no longer supported
scripts/mysql_system_tables_fix.sql:
old timestamp(X) is no longer supported
scripts/mysqlhotcopy.sh:
old timestamp(X) is no longer supported
sql-common/my_time.c:
* call str_to_time from str_to_datetime, as appropriate
* date/time to string conversions take precision as an argument
* number_to_time()
* TIME_to_double()
* pack_time() and unpack_time()
sql/event_data_objects.cc:
cast is not needed
my_datetime_to_str() takes precision as an argument
sql/event_db_repository.cc:
avoid dangerous downcast (because the pointer is
not always Field_timestamp, see events_1.test)
sql/event_queue.cc:
avoid silly double-work for cond_wait
(having an endpoint of wait, subtract the current time to get the timeout,
and use set_timespec() macro to fill in struct timespec, by adding the current
time to the timeout)
sql/field.cc:
* remove virtual Field::get_time(), everyone should use only Field::get_date()
* remove lots of #ifdef WORDS_BIGENDIAN
* unified the warnings from Field_timestamp/datetime/time/date/newdate store methods
* Field_timestamp_hires, Field_datetime_hires, Field_time_hires
* Field_temporal
* make_truncated_value_warning and Field::set_datetime_warning use Lazy_string as an argument, removed char*/int/double variants
sql/field.h:
* remove virtual Field::get_time(), everyone should use only Field::get_date()
* remove lots of #ifdef WORDS_BIGENDIAN
* unified the warnings from Field_timestamp/datetime/time/date/newdate store methods
* Field_timestamp_hires, Field_datetime_hires, Field_time_hires
* Field_temporal
* make_truncated_value_warning and Field::set_datetime_warning use Lazy_string as an argument, removed char*/int/double variants
* removed Field::can_be_compared_as_longlong(). Use Field::cmp_type() == INT_RESULT instead
sql/filesort.cc:
TIME_RESULT, cmp_time()
sql/item.cc:
* numbers aren't quoted in EXPLAIN EXTENDED
* Item::cmp_result() instead of Item::is_datetime() and Item::result_as_longlong()
* virtual Item::get_time() is gone
* Item_param::field_type() is set correctly
* Item_datetime, for a datetime constant
* time to anything is compared as a time
* Item_cache::print() prints the value is available
* bug fixed in Item_cache_int::val_str()
sql/item.h:
* Item::print_value(), to be used from Item_xxx::print() when needed
* Item::cmp_result() instead of Item::is_datetime() and Item::result_as_longlong()
* virtual Item::get_time() is gone
* Item_datetime, for a datetime constant
* better default for cast_to_int_type()
* Item_cache objects now *always* have the field_type() set
sql/item_cmpfunc.cc:
* get_year_value, get_time_value are gone. get_datetime_value does it all
* get_value_a_func, get_value_b_func are gone
* can_compare_as_dates() is gone too, TIME_RESULT is used instead
* cmp_type() instead or result_type() when doing a comparison
* compare_datetime and compate_e_datetime in the comparator_matrix, is_nulls_eq is gone
* Item::cmp_result() instead of Item::is_datetime() and Item::result_as_longlong()
sql/item_cmpfunc.h:
greatly simplified Arg_comparator
sql/item_create.cc:
* fix a bug in error messages in CAST
sql/item_func.cc:
Item::cmp_result() instead of Item::is_datetime() and Item::result_as_longlong()
mention all possibitiles in switch over Item_result values, or use default:
sql/item_row.h:
overwrite the default cmp_type() for Item_row,
as no MYSQL_TYPE_xxx value corresponds to ROW_RESULT
sql/item_timefunc.cc:
rewrite make_datetime to support precision argument
SEC_TO_TIME is real function, not integer.
many functions that returned temporal values had duplicate code in val_* methods,
some of them did not have get_date() which resulted in unnecessary date->str->date conversions.
Now they all are derived from Item_temporal_func and *only* provide get_date, not val* methods.
many fixes to set decimals (datetime precision) correctly.
sql/item_timefunc.h:
SEC_TO_TIME is real function, not integer.
many functions that returned temporal values had duplicate code in val_* methods,
some of them did not have get_date() which resulted in unnecessary date->str->date conversions.
Now they all are derived from Item_temporal_func and *only* provide get_date, not val* methods.
many fixes to set decimals (datetime precision) correctly.
sql/log_event.cc:
replication of NOW(6)
sql/log_event.h:
replication of NOW(6)
sql/mysql_priv.h:
Lazy_string class to pass a value (string, number, time) polymorphically down the stack.
make_truncated_value_warning() that uses it.
sql/mysqld.cc:
datetime in Arg_comparator::comparator_matrix
sql/opt_range.cc:
cleanup: don't disable warnings before calling save_in_field_no_warnings()
sql/protocol.cc:
Protocol::store(time) now takes the precision as an argument
sql/protocol.h:
Protocol::store(time) now takes the precision as an argument
sql/rpl_rli.cc:
small cleanup
sql/set_var.cc:
SET TIMESTAMP=double
sql/set_var.h:
@@TIMESTAMP is a double
sql/share/errmsg.txt:
precision and scale are unsigned
sql/slave.cc:
replication of NOW(6)
sql/sp_head.cc:
cleanup
sql/sql_class.cc:
support for NOW(6)
sql/sql_class.h:
support for NOW(6)
sql/sql_insert.cc:
support for NOW(6)
sql/sql_select.cc:
use item->cmp_type().
move a comment where it belongs
sql/sql_show.cc:
new column I_S.COLUMNS.DATETIME_PRECISION
sql/sql_yacc.yy:
TIME(X), DATETIME(X), cast, NOW(X), CURTIME(X), etc
sql/time.cc:
fix date_add_interval() to support MYSQL_TIMESTAMP_TIME argument
storage/myisam/ha_myisam.cc:
TIMESTAMP no longer carries ZEROFIELD flag, still we keep MYI file compatible.
strings/my_vsnprintf.c:
warnings
tests/mysql_client_test.c:
old timestamp(X) does not work anymore
datetime is no longer equal to time
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Fields belonging to views in general cannot be substituted for
equal items, in particular for constants, because all references
to a view field refer to the same Item_field object while they
could be used in different OR parts of the where condition and
belong to different equivalence classes (to different Item_equals).
That's why substitution for equal items in any context is allowed
only in place of Item_direct_view_ref objects, but not in place of
Item_fields these objects refer to.
Due to some erroneous code in the patch for bug 717577 substitution
for view fields were allowed in some context.This could lead
to wrong results returned by queries using views.
The fix prohibits substitution of view fields for equal items
in any context.
The patch also changes slightly the compile method for the Item_func
class. Now if the analyze method returns NULL in his parameter the
compile method is not called for the arguments of the function
at all. A similar change was made for the Item_ref class.
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- COLUMN_CREATE(column_nr, value, [column_nr,value]...)
- COLUMN_ADD(blob,column_nr, value, column_nr,value]...)
- COLUMN_DELETE(blob, column_nr, column_nr...)
- COLUMN_EXISTS(blob, column_nr)
- COLUMN_LIST(blob, column_nr)
- COLUMN_GET(string, column_nr AS type)
Added cast(X as DOUBLE) and cast(x as INT)
Better warning and error messages for wrong cast's
Created some sub functions to simplify and reuse code.
Added a lot of conversation functions with error/warnings for what went wrong.
Fixed some issues when casting time to datetime.
Added functions to dynamic strings and Strings to allow one to move a string buffer from dynamic strings to String (to save malloc+ copy)
Added dynamic columns library to libmysqlclient
include/Makefile.am:
Added ma_dyncol.h
include/decimal.h:
Added 'const' to arguments for some functions.
include/my_sys.h:
Added dynstr_reassociate()
include/my_time.h:
Added TIME_SUBSECOND_RANGE
Added double_to_datetime()
Added flag argument to str_to_time()
libmysql/CMakeLists.txt:
Added mysys/ma_dyncol.c
libmysql/Makefile.shared:
Added ma_dyncol
libmysql/libmysql.c:
Added argument to str_to_time()
mysql-test/r/bigint.result:
Better error messages
mysql-test/r/cast.result:
Better warning and error messages
A lot of new cast() tests
mysql-test/r/func_math.result:
Better warning messages
mysql-test/r/func_str.result:
Better warning messages
mysql-test/r/func_time.result:
Better warning messages
mysql-test/r/sp-vars.result:
Better warning messages
mysql-test/r/strict.result:
Better warning messages
New test result
mysql-test/r/type_newdecimal.result:
Better warning messages
mysql-test/r/warnings.result:
Better warning messages
mysql-test/suite/funcs_1/r/innodb_func_view.result:
Updated results after better cast warnings
mysql-test/suite/funcs_1/r/memory_func_view.result:
Updated results after better cast warnings
mysql-test/suite/funcs_1/r/myisam_func_view.result:
Updated results after better cast warnings
mysql-test/suite/optimizer_unfixed_bugs/t/bug43448.test:
Added begin...commit to speed up test.
mysql-test/suite/parts/inc/part_supported_sql_funcs_delete.inc:
Added begin...commit to speed up test.
mysql-test/suite/parts/inc/partition_supported_sql_funcs.inc:
Added begin...commit to speed up test.
mysql-test/suite/parts/r/part_supported_sql_func_innodb.result:
Added begin...commit to speed up test.
mysql-test/suite/parts/r/part_supported_sql_func_myisam.result:
Added begin...commit to speed up test.
mysql-test/suite/parts/r/rpl_partition.result:
Added begin...commit to speed up test.
mysql-test/suite/parts/t/part_supported_sql_func_innodb.test:
Removed duplicated --big_test
mysql-test/suite/parts/t/rpl_partition.test:
Added begin...commit to speed up test.
mysql-test/suite/pbxt/r/cast.result:
Updated results after better cast warnings
mysql-test/suite/pbxt/r/func_str.result:
Updated results after better cast warnings
mysql-test/suite/pbxt/r/type_newdecimal.result:
Updated results after better cast warnings
mysql-test/suite/rpl/r/rpl_innodb_bug28430.result:
Added begin...commit to speed up test.
mysql-test/suite/rpl/t/rpl_innodb_bug28430.test:
Added begin...commit to speed up test.
mysql-test/suite/vcol/r/vcol_supported_sql_funcs_innodb.result:
More warnings
mysql-test/suite/vcol/r/vcol_supported_sql_funcs_myisam.result:
More warnings
mysql-test/t/cast.test:
A lot of new cast() tests
mysql-test/t/strict.test:
Added new test
mysys/CMakeLists.txt:
Added ma_dyncol.c
mysys/Makefile.am:
Added ma_dyncol.c
mysys/string.c:
Added dynstr_reassociate() to move a buffer from dynamic_strings to some other allocator
sql-common/my_time.c:
Added 'fuzzydate' flag to str_to_time()
Added support for microseconds to my_time_to_str() and my_datetime_to_str()
Reset second_parts in number_to_datetime()
Added double_to_datetime()
sql/field.cc:
Added double_to_longlong() and truncate_double() to simplify and reuse code
sql/field.h:
New prototypes
sql/item.cc:
Changed Item::get_date(MYSQL_TIME *ltime,uint fuzzydate) to be aware of type of argument.
(Needed to make it microsecond safe and get better warnings).
Updated call to str_to_time_with_warn()
sql/item.h:
Added struct st_dyncall_create_def used by dynamic columns
Added virtual bool dynamic_result() to tell if type of argument may change over calls.
sql/item_cmpfunc.cc:
Added Item_func_dyncol_exists()
sql/item_cmpfunc.h:
Added class Item_func_dyncol_exists
sql/item_create.cc:
Added get_length_and_scale() to simplify other functions
Simplified and extended create_func_cast()
Added support for cast(X as double(X,Y))
Added functions to create dynamic column functions.
sql/item_create.h:
Added prototypes
sql/item_func.cc:
Extended cast functions Item_func_signed() and Item_func_unsigned() to work with dynamic types
Added Item_double_typecast()
sql/item_func.h:
Added class Item_double_typecast()
sql/item_strfunc.cc:
Added functions for COLUMN_CREATE(), COLUMN_ADD(), COLUMN_GET() and COLUMN_LIST()
sql/item_strfunc.h:
Added classes for COLUMN_CREATE(), COLUMN_ADD(), COLUMN_GET() and COLUMN_LIST()
sql/item_timefunc.cc:
Added flag argument to str_to_time_with_warn()
Updated Item_char_typecast() to handle result type that may change between calls (for dynamic columns)
Added Item_time_typecast::get_date() to ensure that we cast a datetime to time properly.
sql/item_timefunc.h:
Added get_date() to Item_time_typecast() to allow proper results for casting time to datetime
sql/lex.h:
Added new SQL function names
sql/my_decimal.cc:
Added 'const' to some arguments.
Better error message in case of errors (we now print out the wrong value)
Added my_decimal2int()
sql/my_decimal.h:
Moved some constants to my_decimal_limits.h
Updated prototypes.
Made my_decimal2int() a function as it's rather long (no reason to have it inline)
Added decimal2my_decimal() function.
sql/mysql_priv.h:
Prototypes for new functions
sql/share/errmsg.txt:
New error messages for wrong casts and dynamic columns
sql/sql_acl.cc:
Fixed indentation
sql/sql_base.cc:
Added dynamic_column_error_message()
sql/sql_string.h:
Added reassociate() to move a buffer to be owned by String object.
sql/sql_yacc.yy:
Added syntax for COLUMN_ functions.
sql/time.cc:
Updated str_to_datetime_with_warn() flag argument to same type as other functions
Added conversion flag to str_to_time_with_warn() (Similar to all datetime functions)
Added conversion functions with warnings: double_to_datetime_with_warn() and decimal_to_datetime_with_warn()
strings/decimal.c:
Added 'const' to arguments for some functions.
unittest/mysys/Makefile.am:
Added test for dynamic columns code
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Moved some BSD string functions from Unireg
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DECIMAL COLUMN FUNCTION
Bug#11764671 57533: UNINITIALISED VALUES IN COPY_AND_CONVERT (SQL_STRING.CC) WITH CERTAIN CHA
When ROUND evaluates decimal result it uses Item::decimal
value as fraction value for the result. In some cases
Item::decimal is greater than real result fraction value
and uninitialised memory of result(decimal) buffer can be
used in further calculations. Issue is introduced by
Bug33143 fix. The fix is to remove erroneous assignment.
mysql-test/r/func_math.result:
test case
mysql-test/t/func_math.test:
test case
sql/item_func.cc:
remove erroneous assignment
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LONGLONG2DECIMAL
Valgrind warning happens due to missing NULL value check in
Item_func::val_decimal. The fix is to add this check.
mysql-test/r/func_time.result:
test case
mysql-test/t/func_time.test:
test case
sql/item_func.cc:
added check for NULL value
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> 0 && SCALE <= PR
Assert fails due to overflow which happens in
Item_func_int_val::fix_num_length_and_dec() as
geometry functions have max_length value equal to
max_field_size(4294967295U). The fix is to skip
max_length calculation for some boundary cases.
mysql-test/r/func_math.result:
test case
mysql-test/t/func_math.test:
test case
sql/item_func.cc:
skip max_length calculation
if argument max_length is near max_field_size.
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0 && SCALE <= PRE
Assertion happens due to missing initialization of unsigned_flag
for Item_func_set_user_var object. It leads to incorrect
calculation of decimal field size.
The fix is to add initialization of unsigned_flag.
mysql-test/r/variables.result:
test case
mysql-test/t/variables.test:
test case
sql/item_func.cc:
add initialization of unsigned_flag.
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0' FAILED
Problem: wrong character set pointer was passed to my_strtoll10_mb2,
which led to DBUG_ASSERT failure in some cases.
@ mysql-test/r/func_encrypt_ucs2.result
@ mysql-test/t/func_encrypt_ucs2.test
@ mysql-test/r/ctype_ucs.result
@ mysql-test/t/ctype_ucs.test
Adding tests
@ sql/item_func.cc
"cs" initialization was wrong (res does not necessarily point to &str_value)
@ sql/item_strfunc.cc
Item_func_dec_encrypt::val_str() and Item_func_des_descrypt::val_str()
did not set character set for tmp_value (the returned value),
so the old value, which was previously copied from args[1]->val_str(),
was incorrectly returned with tmp_value.
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Analysis:
A query with implicit grouping is one with aggregate functions and
no GROUP BY clause. MariaDB inherits from MySQL an SQL extenstion
that allows mixing aggregate functions with non-aggregate fields.
If a query with such mixed select clause produces an empty result
set, the meaning of aggregate functions is well defined - either
NULL (MIN, MAX, etc.), or 0 (count(*)). However the non-aggregated
fields must also have some value, and the only reasonable value in
the case of empty result is NULL.
The cause of the many wrong results was that if a field is declared
as non-nullable (e.g. because it is a PK or NOT NULL), the semantic
analysis and the optimization phases treat this field as non-nullable,
and generate all related query plan elements based on this assumption.
Later during execution, these incorrectly configured/generated query
plan elements result in a wrong result because the selected fields
are not null due to the not-null assumption during optimization.
Solution:
Detect before the context analysys phase that a query uses implicit
grouping with mixed aggregates/non-aggregates, and set all fields
as nullable. The parser already walks the SELECT clause, and
already sets Item::with_sum_func for Items that reference aggreagate
functions. The patch adds a symmetric Item::with_field so that all
Items that reference an Item_field are marked during their
construction at parse time in the same way as with aggregate function
use.
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- Fixed some issues with partitions and connection_string, which also fixed lp:716890 "Pre- and post-recovery crash in Aria"
- Fixed wrong assert in Aria
Now need to merge with latest xtradb before pushing
sql/ha_partition.cc:
Ensure that m_ordered_rec_buffer is not freed before close.
sql/mysqld.cc:
Changed to use opt_stack_trace instead of opt_pstack.
Removed references to pstack
sql/partition_element.h:
Ensure that connect_string is initialized
storage/maria/ma_key_recover.c:
Fixed wrong assert
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- Removed files specific to compiling on OS/2
- Removed files specific to SCO Unix packaging
- Removed "libmysqld/copyright", text is included in documentation
- Removed LaTeX headers for NDB Doxygen documentation
- Removed obsolete NDB files
- Removed "mkisofs" binaries
- Removed the "cvs2cl.pl" script
- Changed a few GPL texts to use "program" instead of "library"
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ASSERT happens due to improper calculation of the max_length
in Item_func_div object, if dividend has max_length == 0 then
Item_func_div::max_length is set to 0 under some circumstances.
The fix:
If decimals == NOT_FIXED_DEC then set
Item_func_div::max_length to max possible
DOUBLE length value.
mysql-test/r/func_math.result:
test case
mysql-test/t/func_math.test:
test case
sql/item_func.cc:
The fix:
If decimals == NOT_FIXED_DEC then set
Item_func_div::max_length to max possible
DOUBLE length value.
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--Bug#52157 various crashes and assertions with multi-table update, stored function
--Bug#54475 improper error handling causes cascading crashing failures in innodb/ndb
--Bug#57703 create view cause Assertion failed: 0, file .\item_subselect.cc, line 846
--Bug#57352 valgrind warnings when creating view
--Recently discovered problem when a nested materialized derived table is used
before being populated and it leads to incorrect result
We have several modes when we should disable subquery evaluation.
The reasons for disabling are different. It could be
uselessness of the evaluation as in case of 'CREATE VIEW'
or 'PREPARE stmt', or we should disable subquery evaluation
if tables are not locked yet as it happens in bug#54475, or
too early evaluation of subqueries can lead to wrong result
as it happened in Bug#19077.
Main problem is that if subquery items are treated as const
they are evaluated in ::fix_fields(), ::fix_length_and_dec()
of the parental items as a lot of these methods have
Item::val_...() calls inside.
We have to make subqueries non-const to prevent unnecessary
subquery evaluation. At the moment we have different methods
for this. Here is a list of these modes:
1. PREPARE stmt;
We use UNCACHEABLE_PREPARE flag.
It is set during parsing in sql_parse.cc, mysql_new_select() for
each SELECT_LEX object and cleared at the end of PREPARE in
sql_prepare.cc, init_stmt_after_parse(). If this flag is set
subquery becomes non-const and evaluation does not happen.
2. CREATE|ALTER VIEW, SHOW CREATE VIEW, I_S tables which
process FRM files
We use LEX::view_prepare_mode field. We set it before
view preparation and check this flag in
::fix_fields(), ::fix_length_and_dec().
Some bugs are fixed using this approach,
some are not(Bug#57352, Bug#57703). The problem here is
that we have a lot of ::fix_fields(), ::fix_length_and_dec()
where we use Item::val_...() calls for const items.
3. Derived tables with subquery = wrong result(Bug19077)
The reason of this bug is too early subquery evaluation.
It was fixed by adding Item::with_subselect field
The check of this field in appropriate places prevents
const item evaluation if the item have subquery.
The fix for Bug19077 fixes only the problem with
convert_constant_item() function and does not cover
other places(::fix_fields(), ::fix_length_and_dec() again)
where subqueries could be evaluated.
Example:
CREATE TABLE t1 (i INT, j BIGINT);
INSERT INTO t1 VALUES (1, 2), (2, 2), (3, 2);
SELECT * FROM (SELECT MIN(i) FROM t1
WHERE j = SUBSTRING('12', (SELECT * FROM (SELECT MIN(j) FROM t1) t2))) t3;
DROP TABLE t1;
4. Derived tables with subquery where subquery
is evaluated before table locking(Bug#54475, Bug#52157)
Suggested solution is following:
-Introduce new field LEX::context_analysis_only with the following
possible flags:
#define CONTEXT_ANALYSIS_ONLY_PREPARE 1
#define CONTEXT_ANALYSIS_ONLY_VIEW 2
#define CONTEXT_ANALYSIS_ONLY_DERIVED 4
-Set/clean these flags when we perform
context analysis operation
-Item_subselect::const_item() returns
result depending on LEX::context_analysis_only.
If context_analysis_only is set then we return
FALSE that means that subquery is non-const.
As all subquery types are wrapped by Item_subselect
it allow as to make subquery non-const when
it's necessary.
mysql-test/r/derived.result:
test case
mysql-test/r/multi_update.result:
test case
mysql-test/r/view.result:
test case
mysql-test/suite/innodb/r/innodb_multi_update.result:
test case
mysql-test/suite/innodb/t/innodb_multi_update.test:
test case
mysql-test/suite/innodb_plugin/r/innodb_multi_update.result:
test case
mysql-test/suite/innodb_plugin/t/innodb_multi_update.test:
test case
mysql-test/t/derived.test:
test case
mysql-test/t/multi_update.test:
test case
mysql-test/t/view.test:
test case
sql/item.cc:
--removed unnecessary code
sql/item_cmpfunc.cc:
--removed unnecessary checks
--THD::is_context_analysis_only() is replaced with LEX::is_ps_or_view_context_analysis()
sql/item_func.cc:
--refactored context analysis checks
sql/item_row.cc:
--removed unnecessary checks
sql/item_subselect.cc:
--removed unnecessary code
--added DBUG_ASSERT into Item_subselect::exec()
which asserts that subquery execution can not happen
if LEX::context_analysis_only is set, i.e. at context
analysis stage.
--Item_subselect::const_item()
Return FALSE if LEX::context_analysis_only is set.
It prevents subquery evaluation in ::fix_fields &
::fix_length_and_dec at context analysis stage.
sql/item_subselect.h:
--removed unnecessary code
sql/mysql_priv.h:
--Added new set of flags.
sql/sql_class.h:
--removed unnecessary code
sql/sql_derived.cc:
--added LEX::context_analysis_only analysis intialization/cleanup
sql/sql_lex.cc:
--init LEX::context_analysis_only field
sql/sql_lex.h:
--New LEX::context_analysis_only field
sql/sql_parse.cc:
--removed unnecessary code
sql/sql_prepare.cc:
--removed unnecessary code
--added LEX::context_analysis_only analysis intialization/cleanup
sql/sql_select.cc:
--refactored context analysis checks
sql/sql_show.cc:
--added LEX::context_analysis_only analysis intialization/cleanup
sql/sql_view.cc:
--added LEX::context_analysis_only analysis intialization/cleanup
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