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Manual merge from mysql-trunk-merge.

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Conflicts:
  - extra/comp_err.c
  - mysql-test/collections/default.experimental
  - mysql-test/r/archive.result
  - mysql-test/r/select.result
  - mysql-test/suite/binlog/r/binlog_unsafe.result
  - mysql-test/suite/binlog/t/binlog_unsafe.test
  - mysql-test/suite/rpl/t/disabled.def
  - mysql-test/t/archive.test
  - mysql-test/t/select.test
  - sql/item.cc
  - sql/item.h
  - sql/item_timefunc.cc
  - sql/sql_base.cc
  - sql/sql_delete.cc
  - sql/sql_load.cc
  - sql/sql_partition.cc
  - sql/sql_table.cc
  - storage/innobase/handler/ha_innodb.cc
  - vio/vio.c
This commit is contained in:
Alexander Nozdrin
2009-12-12 23:38:59 +03:00
parent 376cf4275f 5676713687
commit aceea2342f
221 changed files with 5385 additions and 1584 deletions
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44
sql/field.cc
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@@ -2519,6 +2519,50 @@ Field_new_decimal::Field_new_decimal(uint32 len_arg,
}
Field *Field_new_decimal::create_from_item (Item *item)
{
uint8 dec= item->decimals;
uint8 intg= item->decimal_precision() - dec;
uint32 len= item->max_length;
DBUG_ASSERT (item->result_type() == DECIMAL_RESULT);
/*
Trying to put too many digits overall in a DECIMAL(prec,dec)
will always throw a warning. We must limit dec to
DECIMAL_MAX_SCALE however to prevent an assert() later.
*/
if (dec > 0)
{
signed int overflow;
dec= min(dec, DECIMAL_MAX_SCALE);
/*
If the value still overflows the field with the corrected dec,
we'll throw out decimals rather than integers. This is still
bad and of course throws a truncation warning.
+1: for decimal point
*/
const int required_length=
my_decimal_precision_to_length(intg + dec, dec,
item->unsigned_flag);
overflow= required_length - len;
if (overflow > 0)
dec= max(0, dec - overflow); // too long, discard fract
else
/* Corrected value fits. */
len= required_length;
}
return new Field_new_decimal(len, item->maybe_null, item->name,
dec, item->unsigned_flag);
}
int Field_new_decimal::reset(void)
{
store_value(&decimal_zero);