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Fixed bug with BINARY NULL

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Docs/manual.texi:
  ChangeLog
mysql-test/r/binary.result:
  Test of binary NULL
mysql-test/t/binary.test:
  Test of binary NULL
This commit is contained in:
unknown
2002-09-18 02:00:56 +03:00
parent 6f8b510a2b
commit e4860747eb
4 changed files with 22 additions and 1 deletions
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2
Docs/manual.texi
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@@ -46929,6 +46929,8 @@ not yet 100% confident in this code.
@appendixsubsec Changes in release 3.23.53 @appendixsubsec Changes in release 3.23.53
@itemize @bullet @itemize @bullet
@item @item
Fixed core dump bug when using the @code{BINARY} cast on a @code{NULL} value.
@item
Fixed bug in @code{ALTER TABLE} and @code{RENAME TABLE} when running with Fixed bug in @code{ALTER TABLE} and @code{RENAME TABLE} when running with
@code{-O lower_case_table_names=1} (typically on windows) when giving the @code{-O lower_case_table_names=1} (typically on windows) when giving the
table name in uppercase. table name in uppercase.

4
mysql-test/r/binary.result
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@@ -31,3 +31,7 @@ hello hello
a b a b
a b a b
hello hello hello hello
b
b
NULL
b

10
mysql-test/t/binary.test
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@@ -31,3 +31,13 @@ select * from t1 where a="hello ";
select * from t1 where b="hello "; select * from t1 where b="hello ";
select * from t1 where b="hello"; select * from t1 where b="hello";
drop table t1; drop table t1;
#
# Test of binary and NULL
#
create table t1 (b char(8));
insert into t1 values(NULL);
select b from t1 where binary b like '';
select b from t1 group by binary b like '';
select b from t1 having binary b like '';
drop table t1;

7
sql/item_strfunc.h
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@@ -394,7 +394,12 @@ class Item_func_binary :public Item_str_func
public: public:
Item_func_binary(Item *a) :Item_str_func(a) {} Item_func_binary(Item *a) :Item_str_func(a) {}
const char *func_name() const { return "binary"; } const char *func_name() const { return "binary"; }
String *val_str(String *a) { return (args[0]->val_str(a)); } String *val_str(String *a)
{
String *tmp=args[0]->val_str(a);
null_value=args[0]->null_value;
return tmp;
}
void fix_length_and_dec() { binary=1; max_length=args[0]->max_length; } void fix_length_and_dec() { binary=1; max_length=args[0]->max_length; }
void print(String *str) { print_op(str); } void print(String *str) { print_op(str); }
}; };