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Bug#33717 INSERT...(default) fails for enum. Crashes CSV tables, loads spaces for MyISAM

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Table corruption happens during table reading in ha_tina::find_current_row() func.
Field::store() method returns error(true) if stored value is 0.
The fix:
added special case for enum type which correctly processes 0 value.
Additional fix:
INSERT...(default) and INSERT...() have the same behaviour now for enum type.
This commit is contained in:
Sergey Glukhov 2010-02-17 16:13:42 +04:00
parent 1e7700b8b8
commit c8f278485b
5 changed files with 45 additions and 26 deletions
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31
mysql-test/r/csv.result
View File

@ -5394,17 +5394,24 @@ select * from t1;
ERROR HY000: File 'MYSQLD_DATADIR/test/t1.CSV' not found (Errcode: 2)
unlock tables;
drop table t1;
create table t1(a enum ('a') not null) engine=csv;
insert into t1 values (2);
CREATE TABLE t1 (e enum('foo','bar') NOT NULL) ENGINE = CSV;
INSERT INTO t1 VALUES();
INSERT INTO t1 VALUES(default);
INSERT INTO t1 VALUES(0);
Warnings:
Warning 1265 Data truncated for column 'a' at row 1
select * from t1 limit 1;
ERROR HY000: Table 't1' is marked as crashed and should be repaired
repair table t1;
Table Op Msg_type Msg_text
test.t1 repair Warning Data truncated for column 'a' at row 1
test.t1 repair status OK
select * from t1 limit 1;
a
drop table t1;
Warning 1265 Data truncated for column 'e' at row 1
INSERT INTO t1 VALUES(3);
Warnings:
Warning 1265 Data truncated for column 'e' at row 1
INSERT INTO t1 VALUES(-1);
Warnings:
Warning 1265 Data truncated for column 'e' at row 1
SELECT * FROM t1;
e
foo
foo
DROP TABLE t1;
End of 5.1 tests

3
mysql-test/r/default.result
View File

@ -180,7 +180,6 @@ insert into bug20691 values (2, 3, 5, '0007-01-01', 11, 13, 17, '0019-01-01 00:0
insert into bug20691 values (DEFAULT, DEFAULT, DEFAULT, DEFAULT, DEFAULT, DEFAULT, DEFAULT, DEFAULT, DEFAULT, 4);
Warnings:
Warning 1364 Field 'a' doesn't have a default value
Warning 1364 Field 'b' doesn't have a default value
Warning 1364 Field 'c' doesn't have a default value
Warning 1364 Field 'd' doesn't have a default value
Warning 1364 Field 'e' doesn't have a default value
@ -193,7 +192,7 @@ a b c d e f g h i x
two large 00:00:05 0007-01-01 11 13 17 0019-01-01 00:00:00 23 1
small 00:00:00 0000-00-00 0 0000-00-00 00:00:00 0 2
two large 00:00:05 0007-01-01 11 13 17 0019-01-01 00:00:00 23 3
00:00:00 0000-00-00 0 0000-00-00 00:00:00 0 4
small 00:00:00 0000-00-00 0 0000-00-00 00:00:00 0 4
drop table bug20691;
create table t1 (id int not null);
insert into t1 values(default);

18
mysql-test/t/csv.test
View File

@ -1807,16 +1807,16 @@ unlock tables;
drop table t1;
#
# Bug#41441 repair csv table crashes debug server
# Bug#33717 INSERT...(default) fails for enum. Crashes CSV tables, loads spaces for MyISAM
#
# Note: The test should be removed after Bug#33717 is fixed
CREATE TABLE t1 (e enum('foo','bar') NOT NULL) ENGINE = CSV;
INSERT INTO t1 VALUES();
INSERT INTO t1 VALUES(default);
INSERT INTO t1 VALUES(0);
INSERT INTO t1 VALUES(3);
INSERT INTO t1 VALUES(-1);
SELECT * FROM t1;
DROP TABLE t1;
create table t1(a enum ('a') not null) engine=csv;
insert into t1 values (2);
--error ER_CRASHED_ON_USAGE
select * from t1 limit 1;
repair table t1;
select * from t1 limit 1;
drop table t1;
--echo End of 5.1 tests

3
sql/item.cc
View File

@ -6488,7 +6488,8 @@ int Item_default_value::save_in_field(Field *field_arg, bool no_conversions)
{
if (!arg)
{
if (field_arg->flags & NO_DEFAULT_VALUE_FLAG)
if (field_arg->flags & NO_DEFAULT_VALUE_FLAG &&
field_arg->real_type() != MYSQL_TYPE_ENUM)
{
if (field_arg->reset())
{

16
storage/csv/ha_tina.cc
View File

@ -679,9 +679,21 @@ int ha_tina::find_current_row(uchar *buf)
if (read_all || bitmap_is_set(table->read_set, (*field)->field_index))
{
bool is_enum= ((*field)->real_type() == MYSQL_TYPE_ENUM);
/*
Here CHECK_FIELD_WARN checks that all values in the csv file are valid
which is normally the case, if they were written by
INSERT -> ha_tina::write_row. '0' values on ENUM fields are considered
invalid by Field_enum::store() but it can store them on INSERT anyway.
Thus, for enums we silence the warning, as it doesn't really mean
an invalid value.
*/
if ((*field)->store(buffer.ptr(), buffer.length(), buffer.charset(),
CHECK_FIELD_WARN))
goto err;
is_enum ? CHECK_FIELD_IGNORE : CHECK_FIELD_WARN))
{
if (!is_enum)
goto err;
}
if ((*field)->flags & BLOB_FLAG)
{
Field_blob *blob= *(Field_blob**) field;