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NO_ZERO_DATE with ALGORITHM=INPLACE
accept table_name and db_name instead of table_share in make_truncated_value_warning
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* Update wrong zip-code
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Item_func_additive_op::result_precision()
This change is a backport from 10.0 to 5.5 for:
1. The full patch for:
MDEV-4841 Wrong character set of ADDTIME() and DATE_ADD()
9adb6e991ec87b65d04929f115d9d0c899e4ab19
2. A small fragment of:
MDEV-5298 Illegal mix of collations on timestamp
03f6778d61a74bdd7d09103a16473a2a5624cf66
which overrides Item_temporal_hybrid_func::cmp_type(),
and adds a new line into cache_temporal_4265.result.
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column.
The error message modified.
Then the TABLE_SHARE::error_table_name() implementation taken from 10.3,
to be used as a name of the table in this message.
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Extract_source
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Field_temporal_with_date::store_TIME_with_warning
The problem happened because {{Field_xxx::store(longlong nr, bool unsigned_val)}} erroneously passed {{unsigned_flag}} to the {{usec}} parameter of this constructor:
{code:cpp}
Datetime(int *warn, longlong sec, ulong usec, date_conv_mode_t flags)
{code}
1. Changing Time and Datetime constructors to accept data as Sec6 rather than as
longlong/double/my_decimal, so it's not possible to do such mistakes
in the future. Additional good effect of these changes:
- This reduced some amount of similar code (minus ~35 lines).
- The code now does not rely on the fact that "unsigned_flag" is
not important inside Datetime().
The constructor always gets all three parts: sign, integer part,
fractional part. The simple the better.
2. Fixing Field_xxx::store() to use the new Datetime constructor format.
This change actually fixes the problem.
3. Adding "explicit" keyword to all Sec6 constructors,
to avoid automatic hidden conversion from double/my_decimal to Sec6,
as well as from longlong/ulonglong through double to Sec6.
4. Change#1 caused (as a dependency) changes in a few places
with code like this:
bool neg= nr < 0 && !unsigned_val;
ulonglong value= m_neg ? (ulonglong) -nr : (ulonglong) nr;
These fragments relied on a non-standard behavior with
the operator "minus" applied to the lowest possible negative
signed long long value. This can lead to different results
depending on the platform and compilation flags.
We have fixed such bugs a few times already.
So instead of modifying the old wrong code to a new wrong code,
replacing all such fragments to use Longlong_hybrid,
which correctly handles this special case with -LONGLONG_MIN
in its method abs().
This also reduced the amount of similar code
(1 or 2 new lines instead 3 old lines in all 6 such fragments).
5. Removing ErrConvInteger(longlong nr, bool unsigned_flag= false)
and adding ErrConvInteger(Longlong_hybrid) instead, to encourage
use of safe Longlong_hybrid instead of unsafe pairs nr+neg.
6. Removing unused ErrConvInteger from Item_cache_temporal::get_date()
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stricter data type control to "fuzzydate"
Fixing C++ function check_date() to get the "fuzzydate" as
date_mode_t rather than ulonglong, so conversion from
date_time_t to ulonglong is now done inside C++ check_date(),
and no conversion is needed in the callers' code.
As an additional safety, modified the code not to pass
TIME_FUZZY_DATE to the low level C functions:
- check_date()
- str_to_datetime()
- str_to_time()
- number_to_datetime()
because TIME_FUZZY_DATE is known only on the C++ level,
C functions do not know it.
Soon we'll be adding more flags into the C++ level (i.e. to date_time_t),
e.g. for rounding. It's a good idea to prevent passing C++ specific
flags into pure C routines before this change.
Asserts were added into the affected C functions to verify
that the caller passed only known C level flags.
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control to "fuzzydate"
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Item_xxx_typecast::get_date() to Time and Datetime constructors
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MYSQL_TIME_STATUS
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The affected code is well covered by tests for MDEV-8766.
Adding only the missing part: the old mode OLD_MODE_ZERO_DATE_TIME_CAST
in combination with 0000-MM-00 and YYYY-00-00.
The old mode in combination with 0000-00-DD was already covered,
so was the new mode with all types of DATETIME values.
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- Adding a helper class Sec6 to store (neg,seconds,microseconds)
- Adding a helper class VSec6 (Sec6 with a flag for "IS NULL")
- Wrapping related functions as methods of Sec6;
* number_to_datetime()
* number_to_time()
* my_decimal2seconds()
* Item::get_seconds()
* A big piece of code in Item_func_sec_to_time::get_date()
- Using the new classes in places where second-to-temporal
conversion takes place:
* Field_timestamp::store(double)
* Field_timestamp::store(longlong)
* Field_timestamp_with_dec::store_decimal(my_decimal)
* Field_temporal_with_date::store(double)
* Field_temporal_with_date::store(longlong)
* Field_time::store(double)
* Field_time::store(longlong)
* Field_time::store_decimal(my_decimal)
* Field_temporal_with_date::store_decimal(my_decimal)
* get_interval_value()
* Item_func_sec_to_time::get_date()
* Item_func_from_unixtime::get_date()
* Item_func_maketime::get_date()
This change simplifies these methods and functions a lot.
- Warnings are now sent at VSec6 initialization time, when the source
data is available in its original data type representation.
If Sec6::to_time() or Sec6::to_datetime() truncate data again during
conversion to MYSQL_TIME, they send warnings, but only if no warnings
were sent during VSec6 initialization. This helps prevents double warnings.
The call for val_str() in Item_func_sec_to_time::get_date() is not
needed any more, so it's removed. This change actually fixes the problem.
As a good effect, FROM_UNIXTIME() and MAKETIME() now also send warnings
in case if the seconds arguments is out of range. Previously these
functions returned NULL silently.
- Splitting the code in the global function make_truncated_value_warning()
into a number of methods THD::raise_warning_xxxx().
This was needed to reuse the logic that chooses between:
* ER_TRUNCATED_WRONG_VALUE
* ER_WRONG_VALUE
* ER_TRUNCATED_WRONG_VALUE_FOR_FIELD
for non-temporal data types (Sec6).
- Removing:
* Item::get_seconds()
* number_to_time_with_warn()
as this code now resides inside methods of Sec6.
- Cleanup (changes that are not directly related to the fix):
* Removing calls for field_name_or_null() and passing NULL instead
in Item_func_hybrid_field_type::get_date_from_{int|real}_op,
because Item_func_hybrid_field_type::field_name_or_null()
always returns NULL
* Replacing a number of calls for make_truncated_value_warning()
to calls for THD::raise_warning_xxx(). In these places
we know that the execution went through a certain
branch of make_truncated_value_warning(),
(e.g. the exact error code is known, or field name is always NULL,
or field name is always not-NULL). So calls for the entire
make_truncated_value_warning() after splitting are not necessary.
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Changing data types for:
- seconds from longlong to ulonglong
- microseconds from long to ulong
in:
- parameters of calc_time_diff()
- parameters of calc_time_from_sec()
- Members of Sec6_add
This will help to reuse the code easier:
all other functions use ulonglong+long
for seconds/microsecond, e.g.:
- number_to_time()
- number_to_datetime()
- number_to_datetime_with_warn()
- Field_temporal_with_date::store_decimal()
- my_decimal2seconds()
- Item::get_seconds()
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IN (const_list)"
There were two problems related to the bug report:
1. Item_datetime::get_date() was not implemented.
So execution went through val_int() followed
by int-to-datetime or int-to-time conversion.
This was the reason why the optimizer did not
work well on data with fractional seconds.
2. Item_datetime::set() did not have a TIME specific code
to mix months and days to hours after unpack_time().
This is why the optimizer did not work well with negative
TIME values, as well as huge time values.
Changes:
1. Overriding Item_datetime::get_date(), to return ltime.
This fixes the problem N1.
2. Cleanup: Moving pack_time() and unpack_time() from
sql-common/my_time.c and include/my_time.h to
sql/sql_time.cc and sql/sql_time.h, as they are not needed
on the client side.
3. Adding a new "enum_mysql_timestamp_type ts_type" parameter
to unpack_time() and moving the TIME specific code to mix
months and days with hours inside unpack_time().
Adding a new "ts_type" parameter to Item_datetime::set(),
to pass it from the caller down to unpack_time().
So now the TIME specific code is automatically called
from Item_datetime::set(). This fixes the problem N2.
This change also helped to get rid of duplicate TIME specific code
from other three places, where mixing month/days to hours
was done immediately after unpack_time().
Moving the DATE specific code to zero hhmmssff
from Item_func_min_max::get_date_native to inside unpack_time(),
for symmetry.
4. Removing the virtual method in_vector::result_type(),
adding in_vector::type_handler() instead.
This helps to get result_type(), field_type(),
mysql_timestamp_type() of an in_vector easier.
Passing type_handler()->mysql_timestamp_type() as
a new parameter to Item_datetime::set() inside
in_temporal::value_to_item().
5. Cleaup: Removing separate implementations of in_datetime::get_value()
and in_time::get_value(). Adding a single implementation
in_temporal::get_value() instead.
Passing type_handler()->field_type() to get_value_internal().
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'size_t' to 'type', possible loss of data)
Handle string length as size_t, consistently (almost always:))
Change function prototypes to accept size_t, where in the past
ulong or uint were used. change local/member variables to size_t
when appropriate.
This fix excludes rocksdb, spider,spider, sphinx and connect for now.
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Merge remote-tracking branch 'origin/archive/2017-10-17' into 10.3
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* BEGIN_TS(), COMMIT_TS() SQL functions;
* VTQ instead of packed stores secs + usecs like my_timestamp_to_binary() does;
* versioned SELECT to IB is translated with COMMIT_TS();
* SQL fixes:
- FOR_SYSTEM_TIME_UNSPECIFIED condition compares to TIMESTAMP_MAX_VALUE;
- segfault fix #36: multiple execute of prepared stmt;
- different tables to same stored procedure fix (#39)
* Fixes of previous parts: ON DUPLICATE KEY, other misc fixes.
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* moved vers_notify_vtq() to commit phase;
* low_level insert (load test passed);
* rest of SYS_VTQ columns filled: COMMIT_TS, CONCURR_TRX;
* savepoints support;
* I_S.INNODB_SYS_VTQ adjustments:
- limit to I_S_SYS_VTQ_LIMIT(10000) of most recent records;
- CONCURR_TRX limit to I_S_MAX_CONCURR_TRX(100) with '...' truncation marker;
- TIMESTAMP fields show fractions of seconds.
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- Added sql/mariadb.h file that should be included first by files in sql
directory, if sql_plugin.h is not used (sql_plugin.h adds SHOW variables
that must be done before my_global.h is included)
- Removed a lot of include my_global.h from include files
- Removed include's of some files that my_global.h automatically includes
- Removed duplicated include's of my_sys.h
- Replaced include my_config.h with my_global.h
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Benefits of this patch:
- Removed a lot of calls to strlen(), especially for field_string
- Strings generated by parser are now const strings, less chance of
accidently changing a string
- Removed a lot of calls with LEX_STRING as parameter (changed to pointer)
- More uniform code
- Item::name_length was not kept up to date. Now fixed
- Several bugs found and fixed (Access to null pointers,
access of freed memory, wrong arguments to printf like functions)
- Removed a lot of casts from (const char*) to (char*)
Changes:
- This caused some ABI changes
- lex_string_set now uses LEX_CSTRING
- Some fucntions are now taking const char* instead of char*
- Create_field::change and after changed to LEX_CSTRING
- handler::connect_string, comment and engine_name() changed to LEX_CSTRING
- Checked printf() related calls to find bugs. Found and fixed several
errors in old code.
- A lot of changes from LEX_STRING to LEX_CSTRING, especially related to
parsing and events.
- Some changes from LEX_STRING and LEX_STRING & to LEX_CSTRING*
- Some changes for char* to const char*
- Added printf argument checking for my_snprintf()
- Introduced null_clex_str, star_clex_string, temp_lex_str to simplify
code
- Added item_empty_name and item_used_name to be able to distingush between
items that was given an empty name and items that was not given a name
This is used in sql_yacc.yy to know when to give an item a name.
- select table_name."*' is not anymore same as table_name.*
- removed not used function Item::rename()
- Added comparision of item->name_length before some calls to
my_strcasecmp() to speed up comparison
- Moved Item_sp_variable::make_field() from item.h to item.cc
- Some minimal code changes to avoid copying to const char *
- Fixed wrong error message in wsrep_mysql_parse()
- Fixed wrong code in find_field_in_natural_join() where real_item() was
set when it shouldn't
- ER_ERROR_ON_RENAME was used with extra arguments.
- Removed some (wrong) ER_OUTOFMEMORY, as alloc_root will already
give the error.
TODO:
- Check possible unsafe casts in plugin/auth_examples/qa_auth_interface.c
- Change code to not modify LEX_CSTRING for database name
(as part of lower_case_table_names)
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reverted about half of commits as either not applicable or
outright wrong
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UNIX_TIMESTAMP(STR_TO_DATE('201506', "%Y%M"
Issue:
-----
When an invalid date is supplied to the UNIX_TIMESTAMP
function from STR_TO_DATE, no check is performed before
converting it to a timestamp value.
SOLUTION:
---------
Add the check_date function and only if it succeeds,
proceed to the timestamp conversion.
No warning will be returned for dates having zero in
month/date, since partial dates are allowed. UNIX_TIMESTAMP
will return only a zero for such values.
The problem has been handled in 5.6+ with WL#946.
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This patch:
- Moves all definitions from the mysql_priv.h file into
header files for the component where the variable is
defined
- Creates header files if the component lacks one
- Eliminates all include directives from mysql_priv.h
- Eliminates all circular include cycles
- Rename time.cc to sql_time.cc
- Rename mysql_priv.h to sql_priv.h
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time_column=TIMESTAMP'2001-01-01 10:20:31'
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In some cases NO_ZERO_DATE did not allow datetime values with zero date part
and non-zero time part (e.g. '0000-00-00 10:20:30.123456').
Allowing values of this kind in all known pieces of the code.
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TIME/DATETIME COMPARE"
fix for ref like "indexed_time = datetime"
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