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MDEV-29890 Update with inner join false row count result

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when creating a temp table field from an actual table field,
these two fields are supposed to be mostly identical
(except for BIT field storage), in particular, temp field should
have the same default as the orig field, even if the sql_mode has
been changed meanwhile (e.g. to include NO_ZERO_DATE)
This commit is contained in:
Sergei Golubchik
2022-11-17 17:33:34 +01:00
parent 610cea3dda
commit 32f09df2b8
3 changed files with 38 additions and 1 deletions
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4
sql/sql_select.cc
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@ -19035,8 +19035,10 @@ create_tmp_table(THD *thd, TMP_TABLE_PARAM *param, List<Item> &fields,
{
/*
Copy default value. We have to use field_conv() for copy, instead of
memcpy(), because bit_fields may be stored differently
memcpy(), because bit_fields may be stored differently.
But otherwise we copy as is, in particular, ignore NO_ZERO_DATE, etc
*/
Use_relaxed_field_copy urfc(thd);
my_ptrdiff_t ptr_diff= (orig_field->table->s->default_values -
orig_field->table->record[0]);
field->set_notnull();