Commit 0c17b6ed authored by unknown's avatar unknown
Browse files

fix for bug#8692 


mysql-test/r/sp.result:
  added expected result for bug #8692
mysql-test/t/sp.test:
  added testcase for bug #8692
sql/protocol_cursor.cc:
  fixed detecting of null fields: A field contains a null value only 
  if length is NULL_LENGTH
parent 17725b9d

mysql-test/r/sp.result

+24 −0
Original line number Diff line number Diff line
@@ -3099,4 +3099,28 @@ select @@sort_buffer_size| 
1000000

set @@sort_buffer_size = @x|

drop procedure bug9538|

drop procedure if exists bug8692|

create table t3 (c1 varchar(5), c2 char(5), c3 enum('one','two'), c4 text, c5 blob, c6 char(5), c7 varchar(5))|

insert into t3 values ('', '', '', '', '', '', NULL)|

Warnings:

Warning	1265	Data truncated for column 'c3' at row 1

create procedure bug8692()

begin 

declare v1 VARCHAR(10); 

declare v2 VARCHAR(10); 

declare v3 VARCHAR(10); 

declare v4 VARCHAR(10); 

declare v5 VARCHAR(10); 

declare v6 VARCHAR(10); 

declare v7 VARCHAR(10); 

declare c8692 cursor for select c1,c2,c3,c4,c5,c6,c7 from t3; 

open c8692; 

fetch c8692 into v1,v2,v3,v4,v5,v6,v7;

select v1, v2, v3, v4, v5, v6, v7;

end|

call bug8692()|

v1	v2	v3	v4	v5	v6	v7

						NULL

drop procedure bug8692|

drop table t3|

drop table t1,t2;

mysql-test/t/sp.test

+28 −0
Original line number Diff line number Diff line
@@ -3876,6 +3876,34 @@ set @@sort_buffer_size = @x| 
drop procedure bug9538|





#

# BUG#8692: Cursor fetch of empty string

#

--disable_warnings

drop procedure if exists bug8692|

--enable_warnings

create table t3 (c1 varchar(5), c2 char(5), c3 enum('one','two'), c4 text, c5 blob, c6 char(5), c7 varchar(5))|

insert into t3 values ('', '', '', '', '', '', NULL)|



create procedure bug8692()

begin 

    declare v1 VARCHAR(10); 

    declare v2 VARCHAR(10); 

    declare v3 VARCHAR(10); 

    declare v4 VARCHAR(10); 

    declare v5 VARCHAR(10); 

    declare v6 VARCHAR(10); 

    declare v7 VARCHAR(10); 

    declare c8692 cursor for select c1,c2,c3,c4,c5,c6,c7 from t3; 

    open c8692; 

    fetch c8692 into v1,v2,v3,v4,v5,v6,v7;

    select v1, v2, v3, v4, v5, v6, v7;

end|



call bug8692()|

drop procedure bug8692|

drop table t3|



#

# BUG#NNNN: New bug synopsis

#

sql/protocol_cursor.cc

+1 −2
Original line number Diff line number Diff line
@@ -114,8 +114,7 @@ bool Protocol_cursor::write() 


  for (; cur_field < fields_end; cur_field++, data_tmp++)

  {

    if ((len= net_field_length((uchar **)&cp)) == 0 ||

	len == NULL_LENGTH)

    if ((len= net_field_length((uchar **)&cp)) == NULL_LENGTH)

    {

      *data_tmp= 0;

    }