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Bug#19564: mysql displays NULL instead of space

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Correct a bug (that I introduced, after using Oracle's database software for 
too many years) where the length of the database-sent data is incorrectly 
used to infer NULLness.


client/mysql.cc:
  No longer use the length of the data to infer whether it is NULL or not.
mysql-test/r/mysql.result:
  Add result and version marker, and correct previous result.
mysql-test/t/mysql.test:
  Add test and version marker
This commit is contained in:
unknown 2006-05-09 22:35:51 -04:00
parent 481493a6fc
commit 2e72ae3d81
3 changed files with 19 additions and 3 deletions
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2
client/mysql.cc
View file

@ -2319,7 +2319,7 @@ print_table_data(MYSQL_RES *result)
uint extra_padding;
/* If this column may have a null value, use "NULL" for empty. */
if (! not_null_flag[off] && (lengths[off] == 0))
if (! not_null_flag[off] && (cur[off] == NULL))
{
buffer= "NULL";
data_length= 4;

12
mysql-test/r/mysql.result
View file

@ -74,7 +74,7 @@ c_cp932
+----------------------+------------+--------+
| >a < | b | 123421 |
| >a < | 0123456789 | 4 |
| >abcd< | NULL | 4 |
| >abcd< | | 4 |
+----------------------+------------+--------+
+------+------+---------------------------+
| i | j | k |
@ -94,6 +94,14 @@ c_cp932
| Field | Type | Null | Key | Default | Extra |
+-------+---------+------+-----+---------+-------+
| i | int(11) | YES | | NULL | |
| j | int(11) | NO | | NULL | |
| j | int(11) | NO | | | |
| k | int(11) | YES | | NULL | |
+-------+---------+------+-----+---------+-------+
+------+------+
| i | s1 |
+------+------+
| 1 | x |
| 2 | NULL |
| 3 | |
+------+------+
End of 5.0 tests

8
mysql-test/t/mysql.test
View file

@ -72,3 +72,11 @@ drop table t1;
#
--exec $MYSQL -t --default-character-set utf8 test -e "create table t1 (i int, j int not null, k int); insert into t1 values (null, 1, null); select * from t1; describe t1; drop table t1;"
#
# Bug#19564: mysql displays NULL instead of space
#
--exec $MYSQL -t test -e "create table b19564 (i int, s1 char(1)); insert into b19564 values (1, 'x'); insert into b19564 values (2, NULL); insert into b19564 values (3, ' '); select * from b19564 order by i; drop table b19564;"
--echo End of 5.0 tests