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branches/5.1: In the last round of AUTOINC cleanup we assumed that AUTOINC

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is only defined for integer columns. This caused an assertion failure when
we checked for the maximum value of a column type. We now calculate the
max value for floating-point autoinc columns too.

Fix Bug#42400 - InnoDB autoinc code can't handle floating-point columns
rb://84 and Mantis issue://162
This commit is contained in:
sunny 2009-01-29 14:01:36 +00:00
parent de14b0d1ee
commit 5a4789be8d
3 changed files with 85 additions and 2 deletions
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12
handler/ha_innodb.cc
View file

@ -3405,7 +3405,7 @@ skip_field:
}
/************************************************************************
Get the upper limit of the MySQL integral type. */
Get the upper limit of the MySQL integral and floating-point type. */
ulonglong
ha_innobase::innobase_get_int_col_max_value(
@ -3444,12 +3444,20 @@ ha_innobase::innobase_get_int_col_max_value(
max_value = 0x7FFFFFFFULL;
break;
/* BIG */
case HA_KEYTYPE_ULONGLONG:
case HA_KEYTYPE_ULONGLONG:
max_value = 0xFFFFFFFFFFFFFFFFULL;
break;
case HA_KEYTYPE_LONGLONG:
max_value = 0x7FFFFFFFFFFFFFFFULL;
break;
case HA_KEYTYPE_FLOAT:
/* We use the maximum as per IEEE754-2008 standard, 2^24 */
max_value = 0x1000000;
break;
case HA_KEYTYPE_DOUBLE:
/* We use the maximum as per IEEE754-2008 standard, 2^53 */
max_value = 0x20000000000000;
break;
default:
ut_error;
}

48
mysql-test/innodb-autoinc.result
View file

@ -581,3 +581,51 @@ c1
18446744073709551610
18446744073709551615
DROP TABLE t1;
SET @@SESSION.AUTO_INCREMENT_INCREMENT=1, @@SESSION.AUTO_INCREMENT_OFFSET=1;
SET @@INSERT_ID=1;
SHOW VARIABLES LIKE "%auto_inc%";
Variable_name Value
auto_increment_increment 1
auto_increment_offset 1
CREATE TABLE t1 (c1 DOUBLE NOT NULL AUTO_INCREMENT, c2 INT, PRIMARY KEY (c1)) ENGINE=InnoDB;
INSERT INTO t1 VALUES(NULL, 1);
INSERT INTO t1 VALUES(NULL, 2);
SELECT * FROM t1;
c1 c2
1 1
2 2
ALTER TABLE t1 CHANGE c1 c1 SERIAL;
SELECT * FROM t1;
c1 c2
1 1
2 2
INSERT INTO t1 VALUES(NULL, 3);
INSERT INTO t1 VALUES(NULL, 4);
SELECT * FROM t1;
c1 c2
1 1
2 2
3 3
4 4
DROP TABLE IF EXISTS t1;
CREATE TABLE t1 (c1 FLOAT NOT NULL AUTO_INCREMENT, c2 INT, PRIMARY KEY (c1)) ENGINE=InnoDB;
INSERT INTO t1 VALUES(NULL, 1);
INSERT INTO t1 VALUES(NULL, 2);
SELECT * FROM t1;
c1 c2
1 1
2 2
ALTER TABLE t1 CHANGE c1 c1 SERIAL;
SELECT * FROM t1;
c1 c2
1 1
2 2
INSERT INTO t1 VALUES(NULL, 3);
INSERT INTO t1 VALUES(NULL, 4);
SELECT * FROM t1;
c1 c2
1 1
2 2
3 3
4 4
DROP TABLE t1;

27
mysql-test/innodb-autoinc.test
View file

@ -371,3 +371,30 @@ SHOW VARIABLES LIKE "%auto_inc%";
INSERT INTO t1 VALUES (NULL),(NULL), (NULL);
SELECT * FROM t1;
DROP TABLE t1;
#
# Check for floating point autoinc column handling
#
SET @@SESSION.AUTO_INCREMENT_INCREMENT=1, @@SESSION.AUTO_INCREMENT_OFFSET=1;
SET @@INSERT_ID=1;
SHOW VARIABLES LIKE "%auto_inc%";
CREATE TABLE t1 (c1 DOUBLE NOT NULL AUTO_INCREMENT, c2 INT, PRIMARY KEY (c1)) ENGINE=InnoDB;
INSERT INTO t1 VALUES(NULL, 1);
INSERT INTO t1 VALUES(NULL, 2);
SELECT * FROM t1;
ALTER TABLE t1 CHANGE c1 c1 SERIAL;
SELECT * FROM t1;
INSERT INTO t1 VALUES(NULL, 3);
INSERT INTO t1 VALUES(NULL, 4);
SELECT * FROM t1;
DROP TABLE IF EXISTS t1;
CREATE TABLE t1 (c1 FLOAT NOT NULL AUTO_INCREMENT, c2 INT, PRIMARY KEY (c1)) ENGINE=InnoDB;
INSERT INTO t1 VALUES(NULL, 1);
INSERT INTO t1 VALUES(NULL, 2);
SELECT * FROM t1;
ALTER TABLE t1 CHANGE c1 c1 SERIAL;
SELECT * FROM t1;
INSERT INTO t1 VALUES(NULL, 3);
INSERT INTO t1 VALUES(NULL, 4);
SELECT * FROM t1;
DROP TABLE t1;