DROP TABLE IF EXISTS t1;
CREATE TABLE t1(a int);
INSERT INTO t1 VALUES (1), (2);
<?xml version="1.0"?>
<mysqldump>
<database name="test">
	<table name="t1">
	<row>
		<field name="a">1</field>
	</row>
	<row>
		<field name="a">2</field>
	</row>
	</table>
</database>
</mysqldump>
DROP TABLE t1;
CREATE TABLE t1 (a decimal(240, 20));
INSERT INTO t1 VALUES ("1234567890123456789012345678901234567890"),
("0987654321098765432109876543210987654321");
CREATE TABLE t1 (
  a decimal(240,20) default NULL
) TYPE=MyISAM;

INSERT INTO t1 VALUES ("1234567890123456789012345678901234567890.00000000000000000000");
INSERT INTO t1 VALUES ("0987654321098765432109876543210987654321.00000000000000000000");

DROP TABLE t1;
CREATE TABLE t1 (a double);
INSERT INTO t1 VALUES (-9e999999);
CREATE TABLE t1 (
  a double default NULL
) TYPE=MyISAM;

INSERT INTO t1 VALUES (RES);

DROP TABLE t1;