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main.ctype_ucs2 --ps: Item_func_nullif should use m_args0_copy metadata

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in case args[0] changes between PREPARE and EXECUTE
This commit is contained in:
Sergei Golubchik
2015-01-31 16:35:50 +01:00
parent f122cca4df
commit b2ceedc9fb
1 changed files with 10 additions and 10 deletions
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20
sql/item_cmpfunc.cc
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@@ -2751,20 +2751,20 @@ bool Item_func_if::date_op(MYSQL_TIME *ltime, uint fuzzydate)
void
Item_func_nullif::fix_length_and_dec()
{
if (!args[0]) // Only false if EOM
if (!m_args0_copy) // Only false if EOM
return;
cached_result_type= args[0]->result_type();
cached_field_type= args[0]->field_type();
collation.set(args[0]->collation);
decimals= args[0]->decimals;
unsigned_flag= args[0]->unsigned_flag;
fix_char_length(args[0]->max_char_length());
cached_result_type= m_args0_copy->result_type();
cached_field_type= m_args0_copy->field_type();
collation.set(m_args0_copy->collation);
decimals= m_args0_copy->decimals;
unsigned_flag= m_args0_copy->unsigned_flag;
fix_char_length(m_args0_copy->max_char_length());
convert_const_compared_to_int_field(current_thd);
args[0]->cmp_context= args[1]->cmp_context=
item_cmp_type(args[0]->result_type(), args[1]->result_type());
cmp.set_cmp_func(this, tmp_arg, tmp_arg + 1, args[0]->cmp_context);
m_args0_copy->cmp_context= args[1]->cmp_context=
item_cmp_type(m_args0_copy->result_type(), args[1]->result_type());
cmp.set_cmp_func(this, tmp_arg, tmp_arg + 1, m_args0_copy->cmp_context);
maybe_null=1;
}