Commit graph

809 commits

Author SHA1 Message Date
Gleb Shchepa
33cd911a16 Bug #44139: Table scan when NULL appears in IN clause
SELECT ... WHERE ... IN (NULL, ...) does full table scan,
even if the same query without the NULL uses efficient range scan.

The bugfix for the bug 18360 introduced an optimization:
if
  1) all right-hand arguments of the IN function are constants
  2) result types of all right argument items are compatible
     enough to use the same single comparison function to
     compare all of them to the left argument,

then

  we can convert the right-hand list of constant items to an array
  of equally-typed constant values for the further
  QUICK index access etc. (see Item_func_in::fix_length_and_dec()).

The Item_null constant item objects have STRING_RESULT
result types, so, as far as Item_func_in::fix_length_and_dec()
is aware of NULLs in the right list, this improvement efficiently
optimizes IN function calls with a mixed right list of NULLs and
string constants. However, the optimization doesn't affect mixed
lists of NULLs and integers, floats etc., because there is no
unique common comparator.


New optimization has been added to ignore the result type
of NULL constants in the static analysis of mixed right-hand lists.
This is safe, because at the execution phase we care about
presence of NULLs anyway.

1. The collect_cmp_types() function has been modified to optionally
   ignore NULL constants in the item list.
2. NULL-skipping code of the Item_func_in::fix_length_and_dec()
   function has been modified to work not only with in_string
   vectors but with in_vectors of other types.


mysql-test/r/func_in.result:
  Added test case for the bug #44139.
mysql-test/t/func_in.test:
  Added test case for the bug #44139.
sql/item_cmpfunc.cc:
  Bug #44139: Table scan when NULL appears in IN clause
  
  1. The collect_cmp_types() function has been modified to optionally
     ignore NULL constants in the item list.
  2. NULL-skipping code of the Item_func_in::fix_length_and_dec()
     function has been modified to work not only with in_string
     vectors but with in_vectors of other types.
2009-10-05 10:27:36 +05:00
Staale Smedseng
5be4c38226 Merge from 5.0 for 43414 2009-08-28 18:21:54 +02:00
Staale Smedseng
1ba25ae47c Bug #43414 Parenthesis (and other) warnings compiling MySQL
with gcc 4.3.2
      
This patch fixes a number of GCC warnings about variables used
before initialized. A new macro UNINIT_VAR() is introduced for
use in the variable declaration, and LINT_INIT() usage will be
gradually deprecated. (A workaround is used for g++, pending a
patch for a g++ bug.)
      
GCC warnings for unused results (attribute warn_unused_result)
for a number of system calls (present at least in later
Ubuntus, where the usual void cast trick doesn't work) are
also fixed.


client/mysqlmanager-pwgen.c:
  A fix for warn_unused_result, adding fallback to use of
  srand()/rand() if /dev/random cannot be used. Also actually
  adds calls to rand() in the second branch so that it actually
  creates a random password.
2009-08-28 17:51:31 +02:00
Davi Arnaut
fc39459504 Bug#45261: Crash, stored procedure + decimal
The problem was that creating a DECIMAL column from a decimal
value could lead to a failed assertion as decimal values can
have a higher precision than those attached to a table. The
assert could be triggered by creating a table from a decimal
with a large (> 30) scale. Also, there was a problem in
calculating the number of digits in the integral and fractional
parts if both exceeded the maximum number of digits permitted
by the new decimal type.

The solution is to ensure that truncation procedure is executed
when deducing a DECIMAL column from a decimal value of higher
precision. If the integer part is equal to or bigger than the
maximum precision for the DECIMAL type (65), the integer part
is truncated to fit and the fractional becomes zero. Otherwise,
the fractional part is truncated to fit into the space left
after the integer part is copied.

This patch borrows code and ideas from Martin Hansson's patch.

mysql-test/r/type_newdecimal.result:
  Add test case result for Bug#45261. Also, update test case to
  reflect that an additive operation increases the precision of
  the resulting type by 1.
mysql-test/t/type_newdecimal.test:
  Add test case for Bug#45261
sql/field.cc:
  Added DBUG_ASSERT to ensure object's invariant is maintained.
  Implement method to create a field to hold a decimal value
  from an item.
sql/field.h:
  Explain member variable. Add method to create a new decimal field.
sql/item.cc:
  The precision should only be capped when storing the value
  on a table. Also, this makes it impossible to calculate the
  integer part if Item::decimals (the scale) is larger than the
  precision.
sql/item.h:
  Simplify calculation of integer part.
sql/item_cmpfunc.cc:
  Do not limit the precision. It will be capped later.
sql/item_func.cc:
  Use new method for allocating a new decimal field.
  Add a specialized method for retrieving the precision
  of a user variable item.
sql/item_func.h:
  Add method to return the precision of a user variable.
sql/item_sum.cc:
  Use new method for allocating a new decimal field.
sql/my_decimal.h:
  The integer part could be improperly calculated for a decimal
  with 31 digits in the fractional part.
sql/sql_select.cc:
  Use new method which truncates the integer or decimal parts
  as needed.
2009-08-24 16:47:08 -03:00
Alexey Kopytov
2d4df13ef2 Manual merge. 2009-07-03 14:36:04 +04:00
Alexey Kopytov
096c12b2c4 Bug #45262: Bad effects with CREATE TABLE and DECIMAL
Using DECIMAL constants with more than 65 digits in CREATE 
TABLE ... SELECT led to bogus errors in release builds or 
assertion failures in debug builds. 
 
The problem was in inconsistency in how DECIMAL constants and 
fields are handled internally. We allow arbitrarily long 
DECIMAL constants, whereas DECIMAL(M,D) columns are limited to 
M<=65 and D<=30. my_decimal_precision_to_length() was used in 
both Item and Field code and truncated precision to 
DECIMAL_MAX_PRECISION when calculating value length without 
adjusting precision and decimals. As a result, a DECIMAL 
constant with more than 65 digits ended up having length less 
than precision or decimals which led to assertion failures. 
 
Fixed by modifying my_decimal_precision_to_length() so that 
precision is truncated to DECIMAL_MAX_PRECISION only for Field 
object which is indicated by the new 'truncate' parameter. 
 
Another inconsistency fixed by this patch is how DECIMAL 
constants and expressions are handled for CREATE ... SELECT. 
create_tmp_field_from_item() (which is used for constants) was 
changed as a part of the bugfix for bug #24907 to handle long 
DECIMAL constants gracefully. Item_func::tmp_table_field() 
(which is used for expressions) on the other hand was still 
using a simplistic approach when creating a Field_new_decimal 
from a DECIMAL expression. 

mysql-test/r/type_newdecimal.result:
  Added a test case for bug #45262.
mysql-test/t/type_newdecimal.test:
  Added a test case for bug #45262.
sql/item.cc:
  Use the new 'truncate' parameter in 
  my_decimal_precision_to_length().
sql/item_cmpfunc.cc:
  Use the new 'truncate' parameter in 
  my_decimal_precision_to_length().
sql/item_func.cc:
  1. Use the new 'truncate' parameter in 
  my_decimal_precision_to_length().
  
  2. Do not truncate decimal precision to DECIMAL_MAX_PRECISION
  for additive expressions involving long DECIMAL constants.
  
  3. Fixed an incosistency in how DECIMAL constants and 
  expressions are handled for CREATE ... SELECT.
sql/item_func.h:
  Use the new 'truncate' parameter in 
  my_decimal_precision_to_length().
sql/item_sum.cc:
  Use the new 'truncate' parameter in 
  my_decimal_precision_to_length().
sql/my_decimal.h:
  Do not truncate precision to DECIMAL_MAX_PRECISION
  when calculating length in 
  my_decimal_precision_to_length() if 'truncate' parameter
  is FALSE.
sql/sql_select.cc:
  1. Use the new 'truncate' parameter in 
  my_decimal_precision_to_length().
  
  2. Use a more correct logic when adjusting value's length.
2009-07-03 11:41:19 +04:00
Staale Smedseng
62bb2beb92 Merge from 5.0-bugteam for 43414 2009-06-09 18:44:26 +02:00
Staale Smedseng
a073ee45c2 Bug #43414 Parenthesis (and other) warnings compiling MySQL
with gcc 4.3.2
      
Compiling MySQL with gcc 4.3.2 and later produces a number of 
warnings, many of which are new with the recent compiler
versions.
      
This bug will be resolved in more than one patch to limit the
size of changesets. This is the first patch, fixing a number 
of the warnings, predominantly "suggest using parentheses 
around && in ||", and empty for and while bodies.
2009-06-09 18:11:21 +02:00
Staale Smedseng
a092ed1afe Bug #43414 Parenthesis (and other) warnings compiling MySQL
with gcc 4.3.2

Compiling MySQL with gcc 4.3.2 and later produces a number of 
warnings, many of which are new with the recent compiler
versions.

This bug will be resolved in more than one patch to limit the
size of changesets. This is the first patch, fixing a number 
of the warnings, predominantly "suggest using parentheses 
around && in ||", and empty for and while bodies.
2009-06-09 14:55:30 +02:00
Georgi Kodinov
7348140465 Bug #44399 : crash with statement using TEXT columns, aggregates, GROUP BY, and
HAVING
            
When calculating GROUP BY the server caches some expressions. It does
that by allocating a string slot (Item_copy_string) and assigning the 
value of the expression to it. This effectively means that the result
type of the expression can be changed from whatever it was to a string.
As this substitution takes place after the compile-time result type 
calculation for IN but before the run-time type calculations, 
it causes the type calculations in the IN function done at run time 
to get unexpected results different from what was prepared at compile time.
                  
In the CASE ... WHEN ... THEN ... statement there was a similar problem
and it was solved by artificially adding a STRING argument to the set of 
types of the IN/CASE arguments at compile time, so if any of the 
arguments of the CASE function changes its type to a string it will 
still be covered by the information prepared at compile time.

mysql-test/include/mix1.inc:
  Bug #44399: extended the test to cover the different types
mysql-test/r/func_in.result:
  Bug #44399: test case
mysql-test/r/innodb_mysql.result:
  Bug #44399: extended the test to cover the different types
mysql-test/t/func_in.test:
  Bug #44399: test case
sql/item.cc:
  Bug #44399: Implement typed caching for GROUP BY
sql/item.h:
  Bug #44399: Implement typed caching for GROUP BY
sql/item_cmpfunc.cc:
  Bug #44399: remove the special case
sql/sql_select.cc:
  Bug #44399: Implement typed caching for GROUP BY
2009-05-25 11:00:40 +03:00
Georgi Kodinov
54d36955b2 Revert of the fix for bug #44399 (joro@sun.com-20090512135917-kal1dvtqpqgnj3yc). 2009-05-20 14:14:33 +03:00
Georgi Kodinov
d7a22ed9a9 Bug #44399: crash with statement using TEXT columns, aggregates, GROUP BY,
and HAVING

When calculating GROUP BY the server caches some expressions. It does
that by allocating a string slot (Item_copy_string) and assigning the 
value of the expression to it. This effectively means that the result
type of the expression can be changed from whatever it was to a string.
As this substitution takes place after the compile-time result type 
calculation for IN but before the run-time type calculations, 
it causes the type calculations in the IN function done at run time 
to get unexpected results different from what was prepared at compile time.

In the CASE ... WHEN ... THEN ... statement there was a similar problem
and it was solved by artificially adding a STRING argument to the matrix
at compile time, so if any of the arguments of the CASE function changes 
its type to a string it will still be covered by the information prepared 
at compile time.
Extended the CASE fix for cover the IN case.
An alternative way of fixing this problem is by caching the result type of 
the arguments at compile time and using the cached information at run time
instead of re-calculating the result types.
Preferred the CASE approach for uniformity and fix localization.

mysql-test/r/func_in.result:
  Bug #44399: test case
mysql-test/t/func_in.test:
  Bug #44399: test case
sql/item_cmpfunc.cc:
  Bug #44399: assume at compile time there's an extra string argument
  in the IN function (similar to CASE) to cater for possible string 
  conversions in the process of calculating the GROUP BY/aggregates.
2009-05-12 16:59:17 +03:00
Sergey Glukhov
fafeaf460b 5.0-bugteam->5.1-bugteam merge 2009-02-19 17:59:00 +04:00
Sergey Glukhov
c2e23208ef Bug#37601 Cast Is Not Done On Row Comparison
In case of ROW item each compared pair does not
check if argumet collations can be aggregated and
thus appropiriate item conversion does not happen.
The fix is to add the check and convertion for ROW
pairs.


mysql-test/r/row.result:
  test result
mysql-test/t/row.test:
  test case
sql/item.cc:
  added agg_item_set_converter() function which was a part of
  agg_item_charsets() func. The only difference is that
  agg_item_set_converter() checks and converts items 
  using already known collation.
sql/item.h:
  added agg_item_set_converter() function
sql/item_cmpfunc.cc:
  In case of ROW item each compared pair does not
  check if argumet collations can be aggregated and
  thus appropiriate item conversion does not happen.
  The fix is to add the check and convertion for ROW
  pairs.
2009-02-19 17:20:44 +04:00
Sergey Petrunia
a9608b196d BUG#37822: Correlated subquery with IN and IS UNKNOWN provides wrong result
Item_in_optimizer::is_null() evaluated "NULL IN (SELECT ...)" to NULL regardless of
whether subquery produced any records, this was a documented limitation.

The limitation has been removed (see bugs 8804, 24085, 24127) now
Item_in_optimizer::val_int() correctly handles all cases with NULLs. Make
Item_in_optimizer::is_null() invoke val_int() to return correct values for
"NULL IN (SELECT ...)".


mysql-test/r/subselect.result:
  BUG#37822: Correlated subquery with IN and IS UNKNOWN provides wrong result
  - Testcase
mysql-test/t/subselect.test:
  BUG#37822: Correlated subquery with IN and IS UNKNOWN provides wrong result
  - Testcase
2009-01-28 22:18:27 +03:00
Gleb Shchepa
335e842d24 Bug #41363: crash of mysqld on windows with aggregate in case
Execution of queries containing the CASE function of
aggregate function like in "SELECT ... CASE ARGV(...) WHEN ..."
crashed the server.


The CASE function caches pointers to concrete comparison
functions for an each pair of types of CASE-WHERE clause
parameters, i.e. for the "CASE INT_RESULT WHERE REAL_RESULT
THEN ... WHERE DECIMAL_RESULT ... END" function call it
caches comparisons for INT_RESULT with REAL_RESULT and
for INT_RESULT with DECIMAL_RESULT. Usually a result
type is known after a call to the fix_fields function,
however, the setup_copy_fields function call may
wrap aggregate items with Item_copy_string that has
STRING_RESULT result type, so setup_copy_fields may
change argument result types of the CASE function after
call to Item_func_case::fix_fields/fix_length_and_dec.
Then the Item_func_case::find_item function tries to
use comparison function for unexpected pair of the
STRING_RESULT and some other type - that caused
an assertion failure of server crash.

The Item_func_case::fix_length_and_dec function has
been modified to take into account possible STRING_RESULT
result type in the presence of aggregate arguments of
the CASE function.


mysql-test/r/func_in.result:
  Added test case for bug #41363.
mysql-test/t/func_in.test:
  Added test case for bug #41363.
sql/item_cmpfunc.cc:
  Bug #41363: crash of mysqld on windows with aggregate in case
  
  The Item_func_case::fix_length_and_dec function has
  been modified to take into account possible STRING_RESULT
  result type in the presence of aggregate arguments of
  the CASE function.
2008-12-31 15:55:04 +04:00
Gleb Shchepa
749847686c rollback of bug #40761 fix 2008-12-12 15:13:11 +04:00
Gleb Shchepa
5ff1bcbc2a rollback of bug #40761 fix 2008-12-12 14:59:10 +04:00
Gleb Shchepa
a4467c9798 manual merge 5.0-bugteam -> 5.1-bugteam (bug 40761) 2008-12-12 02:04:06 +04:00
Gleb Shchepa
ffe23f0eb7 Bug #40761: Assert on sum function on
IF(..., CAST(longtext AS UNSIGNED), signed_val)
            (was: LEFT JOIN on inline view crashes server)

Select from a LONGTEXT column wrapped with an expression
like "IF(..., CAST(longtext_column AS UNSIGNED), smth_signed)"
failed an assertion or crashed the server. IFNULL function was
affected too.

LONGTEXT column item has a maximum length of 32^2-1 bytes,
at the same time this is a maximum possible length of any
MySQL item. CAST(longtext_column AS UNSIGNED) returns some
unsigned numeric result of length 32^2-1, so the result of
IF/IFNULL function of this number and some other signed number
will have text length of (32^2-1)+1=32^2 (one byte for the
minus sign) - there is integer overflow, and the length is
equal to zero. That caused assert/crash.

The bug has been fixed by the same solution as in the CASE
function implementation.


mysql-test/r/func_if.result:
  Added test case for bug #40761.
mysql-test/t/func_if.test:
  Added test case for bug #40761.
sql/item_cmpfunc.cc:
  Bug #40761: Assert on sum function on
              IF(..., CAST(longtext AS UNSIGNED), signed_val)
  
  1. Item_func_case::agg_str_lengths method has been moved
     to the Item_func superclass.
  2. Item_func_ifnull/Item_func_if::fix_length_and_dec methods
     have been updated to calculate max_length, decimals and
     unsigned flag like Item_func_case.
sql/item_cmpfunc.h:
  Bug #40761: Assert on sum function on
              IF(..., CAST(longtext AS UNSIGNED), signed_val)
  
  Item_func_case::agg_str_lengths method has been moved to
  the Item_func superclass.
sql/item_func.cc:
  Bug #40761: Assert on sum function on
              IF(..., CAST(longtext AS UNSIGNED), signed_val)
  
  Item_func_case::agg_str_lengths method has been moved to
  the Item_func superclass.
sql/item_func.h:
  Bug #40761: Assert on sum function on
              IF(..., CAST(longtext AS UNSIGNED), signed_val)
  
  Item_func_case::agg_str_lengths method has been moved to
  the Item_func superclass.
2008-12-12 00:57:32 +04:00
Georgi Kodinov
5705e3abda merged 37936 to 5.1-bugteam 2008-12-09 19:58:50 +02:00
Georgi Kodinov
bd8657786a Bug #37936: ASSERT_COLUMN_MARKED_FOR_WRITE in Field_datetime::store ,
Field_varstring::store
      
The code that temporary saved the bitmaps of the read set and the write set so that
it can set it to all columns for debug purposes was not expecting that the
table->read_set and table->write_set can be the same. And was always saving both in 
sequence.
As a result the original value was never restored.
Fixed by saving & restoring the original value only once if the two sets are the
same (in a special set of functions).

mysql-test/r/select.result:
  Bug #37936: test case
mysql-test/t/select.test:
  Bug #37936: test case
sql/item_cmpfunc.cc:
  Bug #37936: don't save/restore twice if the read and write sets are the same
sql/opt_range.cc:
  Bug #37936: don't save/restore twice if the read and write sets are the same
sql/table.h:
  Bug #37936: Make a designated set of functions that save/restore
  both the read and the write sets in a single call.
2008-12-09 19:46:03 +02:00
Tatiana A. Nurnberg
61296d6db7 auto-merge 2008-11-27 12:33:04 +01:00
Tatiana A. Nurnberg
d096079d33 Bug#37553: MySql Error Compare TimeDiff & Time
We pretended that TIMEDIFF() would always return positive results;
this gave strange results in comparisons of the TIMEDIFF(low,hi)<TIME(0)
type that rendered a negative result, but still gave false in comparison.
We also inadvertantly dropped the sign when converting times to
decimal.

CAST(time AS DECIMAL) handles signs of the times correctly.
TIMEDIFF() marked up as signed. Time/date comparison code switched to
signed for clarity.

mysql-test/r/func_sapdb.result:
  show that time-related comparisons work with negative
  time values now.
  show that converting time to DECIMAL no longer drops sign.
mysql-test/t/func_sapdb.test:
  show that time-related comparisons work with negative
  time values now.
  show that converting time to DECIMAL no longer drops sign.
sql/item_cmpfunc.cc:
  signed returns
sql/item_cmpfunc.h:
  signed now (time/date < > =)
sql/item_func.cc:
  signed now
sql/item_timefunc.h:
  Functions such as TIMEDIFF() return signed results!
  The file-comments pretended we were doing that all along, anyway...
sql/my_decimal.cc:
  heed sign when converting time to my_decimal;
  times may actually be negative!
  Needed for SELECT CAST(time('-73:42:12') AS DECIMAL);
sql/mysql_priv.h:
  using signed for dates and times now
2008-11-26 09:28:17 +01:00
Sergey Glukhov
bd6376f1d1 Bug#34760 Character set autodetection appears to fail
the problem is the same as reported in bug#20835,
so the fix is backport of bug#20835 patch.


mysql-test/r/subselect.result:
  test result
mysql-test/t/subselect.test:
  test case
2008-11-21 16:39:59 +04:00
Evgeny Potemkin
3c49cb0795 Bug#37870: Usage of uninitialized value caused failed assertion.
The convert_constant_item function converts a constant to integer using
field for condition like 'field = a_constant'. In some cases the
convert_constant_item is called for a subquery when outer select is already
being executed, so convert_constant_item saves field's value to prevent its
corruption. For EXPLAIN and at the prepare phase field's value isn't
initialized yet, thus when convert_constant_item tries to restore saved
value it fails assertion.

Now the convert_constant_item doesn't save/restore field's value if it's
haven't been read yet. Outer constant values are always saved.

mysql-test/r/explain.result:
  Added a test case for the bug#37870.
mysql-test/t/explain.test:
  Added a test case for the bug#37870.
sql/item_cmpfunc.cc:
  Bug#37870: Usage of uninitialized value caused failed assertion.
  Now the convert_constant_item doesn't save/restore field's value if it's
  haven't been read yet. Outer constant values are always saved.
2008-11-05 18:40:23 +03:00
Evgeny Potemkin
545e4c58b2 Corrected fix for the bug#37870. 2008-10-27 19:19:26 +03:00
Evgeny Potemkin
e27e560783 Bug#37870: Usage of uninitialized value caused failed assertion.
The convert_constant_item function converts a constant to integer using
field for condition like 'field = a_constant'. When the convert_constant_item
is called for a subquery the outer select is already being executed, so
convert_constant_item saves field's value to prevent its corruption.
For EXPLAIN field's value isn't initialized thus when convert_constant_item
tries to restore saved value it fails assertion.
      
Now the convert_constant_item doesn't save/restore field's value
for EXPLAIN.


mysql-test/r/explain.result:
  Added a test case for the bug#37870.
mysql-test/t/explain.test:
  Added a test case for the bug#37870.
sql/item_cmpfunc.cc:
  Bug#37870: Usage of uninitialized value caused failed assertion.
  Now the convert_constant_item doesn't save/restore field's value
  for EXPLAIN.
2008-10-27 12:26:32 +03:00
Ramil Kalimullin
eb2794d422 Merge 2008-09-09 20:52:38 +05:00
Ramil Kalimullin
776793a97c Fix for bug#37526: asymertic operator <=> in trigger
Problem: <=> operator may return wrong results 
comparing NULL and a DATE/DATETIME/TIME value.

Fix: properly check NULLs.


mysql-test/r/type_datetime.result:
  Fix for bug#37526: asymertic operator <=> in trigger
    - test result.
mysql-test/t/type_datetime.test:
  Fix for bug#37526: asymertic operator <=> in trigger
    - test case.
sql/item_cmpfunc.cc:
  Fix for bug#37526: asymertic operator <=> in trigger
    - if is_nulls_eq is TRUE Arg_comparator::compare_datetime() 
  should return 1 only if both arguments are NULL.
2008-09-09 20:05:27 +05:00
Ramil Kalimullin
bef0ee999d Merge 2008-09-05 13:36:02 +05:00
Ramil Kalimullin
788be2aebd Fix for bug #39021: SELECT REGEXP BINARY NULL never returns
Problem: SELECT ... REGEXP BINARY NULL may lead to server crash/hang.

Fix: properly handle NULL regular expressions.


mysql-test/r/func_regexp.result:
  Fix for bug #39021: SELECT REGEXP BINARY NULL never returns
    - test result.
mysql-test/t/func_regexp.test:
  Fix for bug #39021: SELECT REGEXP BINARY NULL never returns
    - test case.
sql/item_cmpfunc.cc:
  Fix for bug #39021: SELECT REGEXP BINARY NULL never returns
    - checking regular expressions' null_value
  we tested it without a val_xxx() call before, which is wrong.
  Now Item_func_regex::regcomp() returns -1 in the case
  and allows to handle NULL expessions properly.
sql/item_cmpfunc.h:
  Fix for bug #39021: SELECT REGEXP BINARY NULL never returns
    - checking regular expressions' null_value
  we tested it without a val_xxx() call before, which is wrong.
  Now Item_func_regex::regcomp() returns -1 in the case
  and allows to handle NULL expessions properly.
2008-09-05 13:30:01 +05:00
Ramil Kalimullin
67a3d9e4d0 Fix for bug#37337: Function returns different results
Problem: REGEXP in functions/PSs may return wrong results
due to improper initialization.

Fix: initialize required REGEXP params.


sql/item_cmpfunc.cc:
  Fix for bug#37337: Function returns different results
  
  prev_regexp is used in the Item_func_regex::regcomp()
  to store previous regex and to avoid re-initialization 
  if given the same pattern.
  Shoud be deleted in the Item_func_regex::cleanup() where we
  clean up the regexp structure.
2008-08-15 10:53:25 +05:00
Georgi Kodinov
a3cd2e2dab merged 34159 and 37662 5.0-bugteam->5.1-bugteam 2008-07-31 12:50:24 +03:00
Georgi Kodinov
ae4a35fd5c Bug#37662 nested if() inside sum() is parsed in exponential time
min() and max() functions are implemented in MySQL as macros.
This means that max(a,b) is expanded to: ((a) > (b) ? (a) : (b))
Note how 'a' is quoted two times.
Now imagine 'a' is a recursive function call that's several 10s of levels deep.
And the recursive function does max() with a function arg as well to dive into
recursion.
This means that simple function call can take most of the clock time.
Identified and fixed several such calls to max()/min() : including the IF() 
sql function implementation.

mysql-test/r/func_if.result:
  Bug#37662 test case
mysql-test/t/func_if.test:
  Bug#37662 test case
sql/item.cc:
  Bug#37662 don't call expensive functions as arguments to min/max
sql/item_cmpfunc.cc:
  Bug#37662 don't call expensive functions as arguments to min/max
sql/item_func.cc:
  Bug#37662 don't call expensive functions as arguments to min/max
2008-07-30 14:07:37 +03:00
Gleb Shchepa
56861c2d1f after-push patch: partial rollback of bug #37761 fix.
Note: item->null_value is not updated before a call to
item->store(), item->is_null() is not too (in common case).
2008-07-15 17:12:08 +05:00
Gleb Shchepa
e000e4a2a2 Bug #37761: IN handles NULL differently for table-subquery
and value-list

The server returns unexpected results if a right side of the 
NOT IN clause consists of NULL value and some constants of
the same type, for example:

  SELECT * FROM t WHERE NOT t.id IN (NULL, 1, 2) 
  
may return 3, 4, 5 etc if a table contains these values.


The Item_func_in::val_int method has been modified:
unnecessary resets of an Item_func_case::has_null field 
value has been moved outside of an argument comparison
loop. (Also unnecessary re-initialization of the null_value
field has been moved).


mysql-test/r/func_in.result:
  Added test case for bug #37761.
mysql-test/t/func_in.test:
  Added test case for bug #37761.
sql/item_cmpfunc.cc:
  Bug #37761: IN handles NULL differently for table-subquery 
              and value-list
  
  The Item_func_in::val_int method has been modified:
  unnecessary resets of an Item_func_case::has_null field 
  value has been moved outside of an argument comparison
  loop. (Also unnecessary re-initialization of the null_value
  field has been moved).
2008-07-14 14:06:49 +05:00
unknown
a9089cf460 Bug#26243 mysql command line crash after control-c
- Backported the 5.1 DBUG to 5.0.
- Avoid memory cleanup race on Windows client for CTRL-C


client/mysql.cc:
  Bug#26243 mysql command line crash after control-c
  - On Windows, the sigint handler shouldn't call mysql_end
  because the main thread will do so automatically.
  - Remove unnecessary signal call from the sigint handler.
  - Call my_end with proper value.
dbug/dbug.c:
  Bug#26243 mysql command line crash after control-c
  - Backported the 5.1 DBUG library. The old version uses a non-thread 
  safe global variable 'static struct state *stack'.
dbug/factorial.c:
  Bug#26243 mysql command line crash after control-c
  - Backported the 5.1 DBUG library. The old version uses a non-thread 
  safe global variable 'static struct state *stack'.
dbug/user.r:
  Bug#26243 mysql command line crash after control-c
  - Backported the 5.1 DBUG library. The old version uses a non-thread 
  safe global variable 'static struct state *stack'.
include/my_dbug.h:
  Bug#26243 mysql command line crash after control-c
  - Backported the 5.1 DBUG library. The old version uses a non-thread 
  safe global variable 'static struct state *stack'.
libmysql/libmysql.c:
  Bug#26243 mysql command line crash after control-c
  - Update for new DBUG library.
myisam/mi_open.c:
  Bug#26243 mysql command line crash after control-c
  - Update for new DBUG library.
sql/ha_federated.cc:
  Bug#26243 mysql command line crash after control-c
  - Update for new DBUG library.
sql/ha_innodb.cc:
  Bug#26243 mysql command line crash after control-c
  - Update for new DBUG library.
sql/ha_myisammrg.cc:
  Bug#26243 mysql command line crash after control-c
  - Update for new DBUG library.
sql/item_cmpfunc.cc:
  Bug#26243 mysql command line crash after control-c
  - Update for new DBUG library.
sql/mysqld.cc:
  Bug#26243 mysql command line crash after control-c
  - Update for new DBUG library.
sql/net_serv.cc:
  Bug#26243 mysql command line crash after control-c
  - Update for new DBUG library.
sql/opt_range.cc:
  Bug#26243 mysql command line crash after control-c
  - Update for new DBUG library.
sql/set_var.cc:
  Bug#26243 mysql command line crash after control-c
  - Update for new DBUG library.
sql/slave.cc:
  Bug#26243 mysql command line crash after control-c
  - Update for new DBUG library.
sql/sql_cache.cc:
  Bug#26243 mysql command line crash after control-c
  - Update for new DBUG library.
sql/sql_select.cc:
  Bug#26243 mysql command line crash after control-c
  - Update for new DBUG library.
tests/mysql_client_test.c:
  Bug#26243 mysql command line crash after control-c
  - Update for new DBUG library.
2008-03-28 14:02:27 -04:00
unknown
d6df18dd33 Merge kaamos.(none):/data/src/mysql-5.1
into  kaamos.(none):/data/src/opt/mysql-5.1-opt


client/mysql.cc:
  Auto merged
client/mysqldump.c:
  Auto merged
configure.in:
  Auto merged
include/my_global.h:
  Auto merged
libmysql/libmysql.c:
  Auto merged
libmysqld/lib_sql.cc:
  Auto merged
mysql-test/include/mix1.inc:
  Auto merged
mysql-test/r/create.result:
  Auto merged
mysql-test/r/func_str.result:
  Auto merged
mysql-test/r/innodb.result:
  Auto merged
mysql-test/r/innodb_mysql.result:
  Auto merged
mysql-test/r/select.result:
  Auto merged
mysql-test/r/subselect.result:
  Auto merged
mysql-test/t/create.test:
  Auto merged
mysql-test/t/disabled.def:
  Auto merged
sql/filesort.cc:
  Auto merged
sql/handler.cc:
  Auto merged
sql/item.cc:
  Auto merged
sql/item.h:
  Auto merged
sql/item_cmpfunc.cc:
  Auto merged
sql/item_func.cc:
  Auto merged
sql/item_func.h:
  Auto merged
sql/item_sum.cc:
  Auto merged
sql/log.cc:
  Auto merged
sql/mysql_priv.h:
  Auto merged
sql/mysqld.cc:
  Auto merged
sql/set_var.cc:
  Auto merged
sql/sp.cc:
  Auto merged
sql/sql_acl.cc:
  Auto merged
sql/sql_base.cc:
  Auto merged
sql/sql_insert.cc:
  Auto merged
sql/sql_plugin.cc:
  Auto merged
sql/sql_select.cc:
  Auto merged
sql/sql_yacc.yy:
  Auto merged
storage/ndb/src/kernel/blocks/backup/Backup.hpp:
  Auto merged
tests/mysql_client_test.c:
  Auto merged
mysql-test/r/func_time.result:
  Manual merge.
mysql-test/r/view.result:
  Manual merge.
mysql-test/t/view.test:
  Manual merge.
scripts/mysql_config.sh:
  Manual merge.
sql-common/client.c:
  Manual merge.
sql/sql_parse.cc:
  Manual merge.
2008-03-12 11:19:46 +03:00
unknown
a3e83048a3 Fix for Bug#30217: Views: changes in metadata behaviour
between 5.0 and 5.1.
  
The problem was that in the patch for Bug#11986 it was decided
to store original query in UTF8 encoding for the INFORMATION_SCHEMA.
This approach however turned out to be quite difficult to implement
properly. The main problem is to preserve the same IS-output after
dump/restore.
  
So, the fix is to rollback to the previous functionality, but also
to fix it to support multi-character-set-queries properly. The idea
is to generate INFORMATION_SCHEMA-query from the item-tree after
parsing view declaration. The IS-query should:
  - be completely in UTF8;
  - not contain character set introducers.
  
For more information, see WL4052.


mysql-test/include/ddl_i18n.check_views.inc:
  Add a test case for Bug#30217.
mysql-test/r/ddl_i18n_koi8r.result:
  Update result file.
mysql-test/r/ddl_i18n_utf8.result:
  Update result file.
mysql-test/r/information_schema.result:
  Update result file.
mysql-test/r/information_schema_db.result:
  Update result file.
mysql-test/r/mysqldump.result:
  Update result file.
mysql-test/r/show_check.result:
  Update result file.
mysql-test/t/ddl_i18n_koi8r.test:
  Add a test case for Bug#30217.
mysql-test/t/ddl_i18n_utf8.test:
  Add a test case for Bug#30217.
mysql-test/t/mysqldump.test:
  Add a test case for Bug#30217.
sql/ha_ndbcluster.cc:
  Add a parameter to print().
sql/item.cc:
  1. Add a parameter to print().
  2. Item_string::print():
        - Do not append character set introducer to the text literal
          if we're building a query for INFORMATION_SCHEMA;
        - Convert text literal to UTF8 if we're building a query
          for INFORMATION_SCHEMA.
sql/item.h:
  Add a parameter to print().
sql/item_cmpfunc.cc:
  Add a parameter to print().
sql/item_cmpfunc.h:
  Add a parameter to print().
sql/item_func.cc:
  Add a parameter to print().
sql/item_func.h:
  Add a parameter to print().
sql/item_geofunc.h:
  Add a parameter to print().
sql/item_row.cc:
  Add a parameter to print().
sql/item_row.h:
  Add a parameter to print().
sql/item_strfunc.cc:
  Add a parameter to print().
sql/item_strfunc.h:
  Add a parameter to print().
sql/item_subselect.cc:
  Add a parameter to print().
sql/item_subselect.h:
  Add a parameter to print().
sql/item_sum.cc:
  Add a parameter to print().
sql/item_sum.h:
  Add a parameter to print().
sql/item_timefunc.cc:
  Add a parameter to print().
sql/item_timefunc.h:
  Add a parameter to print().
sql/mysql_priv.h:
  Add a parameter to print().
sql/sp_head.cc:
  Add a parameter to print().
sql/sql_lex.cc:
  Add a parameter to print().
sql/sql_lex.h:
  Add a parameter to print().
sql/sql_parse.cc:
  Add a parameter to print().
sql/sql_select.cc:
  Add a parameter to print().
sql/sql_show.cc:
  Add a parameter to print().
sql/sql_test.cc:
  Add a parameter to print().
sql/sql_view.cc:
  Build INFORMATION_SCHEMA query from Item-tree.
sql/sql_yacc.yy:
  Build INFORMATION_SCHEMA query from Item-tree.
sql/table.h:
  Add a parameter to print().
2008-02-22 13:30:33 +03:00
unknown
695865fee9 Merge kaamos.(none):/data/src/mysql-5.1
into  kaamos.(none):/data/src/opt/mysql-5.1-opt


libmysqld/lib_sql.cc:
  Auto merged
mysql-test/r/create.result:
  Auto merged
mysql-test/r/innodb_mysql.result:
  Auto merged
mysql-test/r/variables.result:
  Auto merged
BitKeeper/deleted/.del-rpl_ndb_charset.result:
  Auto merged
BitKeeper/deleted/.del-rpl_row_charset.result:
  Auto merged
BitKeeper/deleted/.del-rpl_row_charset.test:
  Auto merged
BitKeeper/deleted/.del-rpl_row_charset_innodb.result:
  Auto merged
mysql-test/t/create.test:
  Auto merged
mysql-test/t/sp.test:
  Auto merged
mysql-test/t/variables.test:
  Auto merged
sql/field.cc:
  Auto merged
sql/filesort.cc:
  Auto merged
sql/handler.cc:
  Auto merged
sql/item.cc:
  Auto merged
sql/item_cmpfunc.cc:
  Auto merged
sql/item_func.cc:
  Auto merged
sql/mysqld.cc:
  Auto merged
sql/sql_acl.cc:
  Auto merged
sql/share/errmsg.txt:
  Auto merged
sql/sql_select.cc:
  Auto merged
sql/sql_yacc.yy:
  Auto merged
mysql-test/lib/mtr_report.pl:
  Manual merge.
mysql-test/r/sp.result:
  Manual merge.
2008-02-17 14:57:01 +03:00
unknown
22e2762640 Merge host.loc:/home/uchum/work/5.0-opt-gca
into  host.loc:/home/uchum/work/5.1-opt-gca


mysql-test/r/select.result:
  Auto merged
mysql-test/t/select.test:
  Auto merged
sql/item_cmpfunc.cc:
  Auto merged
sql/sql_acl.cc:
  Auto merged
2008-02-13 19:37:05 +04:00
unknown
247efb9cf0 Fixed bug#33764: Wrong result with IN(), CONCAT() and implicit
type conversion.

Instead of copying of whole character string from a temporary
buffer, the server copied a short-living pointer to that string
into a long-living structure. That has been fixed.


mysql-test/r/select.result:
  Added test case for bug#33764.
mysql-test/t/select.test:
  Added test case for bug#33764.
sql/item_cmpfunc.cc:
  Fixed bug#33764.
  Copying of a pointer has been replaced with an optional copying of
  a whole array to a newly allocated memory space in case of a
  functional source item.
2008-02-13 19:32:19 +04:00
unknown
a36faa7eda Merge dl145h.mysql.com:/data0/mkindahl/mysql-5.1
into  dl145h.mysql.com:/data0/mkindahl/mysql-5.1-rpl-merge


client/client_priv.h:
  Auto merged
include/my_sys.h:
  Auto merged
mysql-test/mysql-test-run.pl:
  Auto merged
mysql-test/lib/mtr_report.pl:
  Auto merged
mysql-test/suite/rpl/t/rpl_err_ignoredtable.test:
  Auto merged
sql/item_cmpfunc.cc:
  Auto merged
sql/log_event.cc:
  Auto merged
sql/mysql_priv.h:
  Auto merged
sql/mysqld.cc:
  Auto merged
sql/set_var.cc:
  Auto merged
sql/set_var.h:
  Auto merged
sql/slave.cc:
  Auto merged
sql/sql_acl.cc:
  Auto merged
sql/sql_class.h:
  Auto merged
sql/sql_parse.cc:
  Auto merged
sql/sql_repl.cc:
  Auto merged
sql/sql_view.cc:
  Auto merged
mysql-test/suite/rpl/r/rpl_invoked_features.result:
  Manual merge.
mysql-test/suite/rpl/t/rpl_invoked_features.test:
  Manual merge.
sql/log.cc:
  Manual merge.
2008-01-31 17:46:50 +01:00
unknown
7b8ec92ecc Merge dl145h.mysql.com:/data0/mkindahl/mysql-5.1-rpl
into  dl145h.mysql.com:/data0/mkindahl/mysql-5.1-rpl-merge


sql/item_cmpfunc.cc:
  Auto merged
2008-01-30 17:46:37 +01:00
unknown
b0283afb9c Fixing return value.
sql/item_cmpfunc.cc:
  Minor fix to return correct value in case of error.
sql/rpl_utility.cc:
  Minor fix to return correct value in case of error.
2008-01-30 17:35:25 +01:00
unknown
b395490480 Merge dl145h.mysql.com:/data0/mkindahl/mysql-5.1-rpl
into  dl145h.mysql.com:/data0/mkindahl/mysql-5.1-rpl-merge


BitKeeper/deleted/.del-show_binlog_events2.inc:
  Auto merged
sql-common/client.c:
  Auto merged
sql/item_cmpfunc.cc:
  Auto merged
sql/log_event.cc:
  Auto merged
sql/slave.cc:
  Auto merged
2008-01-30 16:14:14 +01:00
unknown
101c30ccc4 Post-merge changes.
BitKeeper/deleted/.del-show_binlog_events2.inc:
  Delete: mysql-test/include/show_binlog_events2.inc
client/mysqlbinlog.cc:
  char -> uchar for raw memory.
sql/item_cmpfunc.cc:
  Adding cast to remove warning when converting negative integer
  to unsigned type.
sql/log_event.cc:
  char -> uchar for raw memory.
sql/log_event.h:
  char -> uchar for raw memory.
sql/rpl_utility.cc:
  Adding cast to remove warning when converting negative integer
  to unsigned type.
sql/slave.cc:
  char -> uchar for raw memory.
sql/sql_repl.cc:
  char -> uchar for raw memory.
sql-common/client.c:
  char -> uchar for raw memory.
2008-01-30 16:03:00 +01:00
unknown
295732b580 Merge bk-internal.mysql.com:/home/bk/mysql-5.1-maint
into  janus.mylan:/usr/home/serg/Abk/mysql-5.1


configure.in:
  Auto merged
libmysql/CMakeLists.txt:
  Auto merged
libmysqld/lib_sql.cc:
  Auto merged
mysql-test/mysql-test-run.pl:
  Auto merged
mysql-test/r/information_schema.result:
  Auto merged
mysql-test/t/information_schema.test:
  Auto merged
sql/Makefile.am:
  Auto merged
sql/field.cc:
  Auto merged
sql/handler.cc:
  Auto merged
sql/item.cc:
  Auto merged
sql/item_func.cc:
  Auto merged
sql/item_geofunc.cc:
  Auto merged
sql/item_subselect.cc:
  Auto merged
sql/key.cc:
  Auto merged
sql/lock.cc:
  Auto merged
sql/log.cc:
  Auto merged
sql/log_event.cc:
  Auto merged
sql/mysql_priv.h:
  Auto merged
sql/mysqld.cc:
  Auto merged
sql/net_serv.cc:
  Auto merged
sql/opt_sum.cc:
  Auto merged
sql/protocol.h:
  Auto merged
sql/repl_failsafe.cc:
  Auto merged
sql/set_var.cc:
  Auto merged
sql/set_var.h:
  Auto merged
sql/sp_head.cc:
  Auto merged
sql/sql_base.cc:
  Auto merged
sql/sql_cache.cc:
  Auto merged
sql/sql_class.cc:
  Auto merged
sql/sql_delete.cc:
  Auto merged
sql/sql_insert.cc:
  Auto merged
sql/sql_lex.cc:
  Auto merged
sql/sql_prepare.cc:
  Auto merged
sql/sql_select.cc:
  Auto merged
sql/sql_select.h:
  Auto merged
sql/sql_show.cc:
  Auto merged
sql/sql_table.cc:
  Auto merged
sql/sql_update.cc:
  Auto merged
sql/sql_yacc.yy:
  Auto merged
sql/table.h:
  Auto merged
storage/archive/ha_archive.cc:
  Auto merged
storage/innobase/buf/buf0buf.c:
  Auto merged
storage/innobase/buf/buf0flu.c:
  Auto merged
storage/innobase/buf/buf0lru.c:
  Auto merged
storage/innobase/include/buf0buf.h:
  Auto merged
storage/innobase/include/buf0buf.ic:
  Auto merged
storage/innobase/include/sync0arr.h:
  Auto merged
storage/innobase/include/sync0rw.h:
  Auto merged
storage/innobase/include/sync0rw.ic:
  Auto merged
storage/innobase/include/sync0sync.h:
  Auto merged
storage/innobase/os/os0sync.c:
  Auto merged
storage/innobase/sync/sync0arr.c:
  Auto merged
storage/innobase/sync/sync0rw.c:
  Auto merged
storage/innobase/sync/sync0sync.c:
  Auto merged
storage/myisam/ha_myisam.cc:
  Auto merged
storage/myisam/mi_open.c:
  Auto merged
storage/myisammrg/ha_myisammrg.cc:
  Auto merged
sql/ha_ndbcluster.cc:
  merged
sql/item_cmpfunc.cc:
  merged
sql/protocol.cc:
  merged
sql/slave.cc:
  merged
sql/sql_class.h:
  merged
sql/sql_parse.cc:
  merged
2007-12-20 22:11:37 +01:00
unknown
18f5e87ed9 Merge bk-internal.mysql.com:/home/bk/mysql-5.1-maint
into  zippy.cornsilk.net:/home/cmiller/work/mysql/mysql-5.1-maint


sql/field.cc:
  Auto merged
sql/filesort.cc:
  Auto merged
sql/ha_ndbcluster.cc:
  Auto merged
sql/handler.cc:
  Auto merged
sql/item_cmpfunc.cc:
  Auto merged
sql/item_create.cc:
  Auto merged
sql/item_func.cc:
  Auto merged
sql/item_geofunc.cc:
  Auto merged
sql/item_strfunc.cc:
  Auto merged
sql/item_subselect.cc:
  Auto merged
sql/item_sum.cc:
  Auto merged
sql/item_timefunc.cc:
  Auto merged
sql/log.cc:
  Auto merged
sql/mysql_priv.h:
  Auto merged
sql/mysqld.cc:
  Auto merged
sql/net_serv.cc:
  Auto merged
sql/opt_sum.cc:
  Auto merged
sql/protocol.h:
  Auto merged
sql/records.cc:
  Auto merged
sql/set_var.cc:
  Auto merged
sql/sp.cc:
  Auto merged
sql/sp_head.h:
  Auto merged
sql/sql_cache.cc:
  Auto merged
sql/sql_class.cc:
  Auto merged
sql/sql_class.h:
  Auto merged
sql/sql_prepare.cc:
  Auto merged
sql/sql_select.h:
  Auto merged
sql/sql_trigger.cc:
  Auto merged
sql/sql_update.cc:
  Auto merged
sql/sql_view.cc:
  Auto merged
sql/structs.h:
  Auto merged
sql/unireg.h:
  Auto merged
sql/item.cc:
  manual merge
sql/log_event.cc:
  manual merge
sql/protocol.cc:
  manual merge
sql/sp_head.cc:
  manual merge
sql/sql_base.cc:
  manual merge
sql/sql_parse.cc:
  manual merge
sql/sql_select.cc:
  manual merge
2007-12-14 10:52:10 -05:00