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MDEV-5039: incorrect Item_func_regex::update_used_tables()

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Other fix of maybe_null problem and revert of revno: 3608 "MDEV-3873 & MDEV-3876 & MDEV-3912 : Wrong result (extra rows) with ALL subquery from a MERGE view."
This commit is contained in:
unknown 2013-09-25 15:30:13 +03:00
commit ec7da1561e
17 changed files with 135 additions and 170 deletions
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10
sql/item_timefunc.cc
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@ -875,7 +875,7 @@ void Item_func_monthname::fix_length_and_dec()
collation.set(cs, DERIVATION_COERCIBLE, repertoire);
decimals=0;
max_length= locale->max_month_name_length * collation.collation->mbmaxlen;
set_persist_maybe_null(1);
maybe_null=1;
}
@ -1025,7 +1025,7 @@ void Item_func_dayname::fix_length_and_dec()
collation.set(cs, DERIVATION_COERCIBLE, repertoire);
decimals=0;
max_length= locale->max_day_name_length * collation.collation->mbmaxlen;
set_persist_maybe_null(1);
maybe_null=1;
}
@ -1407,7 +1407,7 @@ void Item_func_curdate::fix_length_and_dec()
ltime.hour= ltime.minute= ltime.second= 0;
ltime.time_type= MYSQL_TIMESTAMP_DATE;
Item_datefunc::fix_length_and_dec();
set_persist_maybe_null(0);
maybe_null= false;
}
/**
@ -1646,7 +1646,7 @@ void Item_func_date_format::fix_length_and_dec()
collation.collation->mbmaxlen;
set_if_smaller(max_length,MAX_BLOB_WIDTH);
}
set_persist_maybe_null(1); // If wrong date
maybe_null=1; // If wrong date
}
@ -2014,7 +2014,7 @@ void Item_extract::print(String *str, enum_query_type query_type)
void Item_extract::fix_length_and_dec()
{
set_persist_maybe_null(1); // If wrong date
maybe_null=1; // If wrong date
switch (int_type) {
case INTERVAL_YEAR: max_length=4; date_value=1; break;
case INTERVAL_YEAR_MONTH: max_length=6; date_value=1; break;