I keep this little chart tacked to my wall: # BIGINT UNSIGNED = 8 Byte = FFFFFFFFFFFFFFFF = 18446744073709551615 # INT UNSIGNED = 4 Byte = FFFFFFFF = 4294967295 # MEDIUMINT UNSIGNED = 3 Byte = FFFFFF = 16777215 # SMALLINT UNSIGNED = 2 Byte = FFFF = 65535 # TINYINT UNSIGNED = 1 Byte = FF = 255
# BIGINT SIGNED = -9223372036854775808 to 9223372036854775807 # INT SIGNED = -2147483648 to 2147483647 # MEDIUMINT SIGNED = -8388608 to 8388607 # SMALLINT SIGNED = -32768 to 32767 # TINYINT SIGNED = -128 to 127 # TINYTEXT = 255 # TEXT = 65535 # MEDIUMTEXT = 16777215 # LONGTEXT = 4294967295 DÆVID > -----Original Message----- > From: Daniel Kasak [mailto:[EMAIL PROTECTED] > Sent: Tuesday, June 13, 2006 9:52 PM > To: wolverine my; mysql@lists.mysql.com > Subject: Re: Reset (or Defrag) the AUTO_INCREMENT columns > > wolverine my wrote: > > > Yes, I agree on what you have described. > > > > However, what should we do when the value is reaching the > maximum? To > > alter the data type to a bigger one? > > Yes - convert the data type to a larger one. > > If you've got a mediumint, for example, you can convert it to an > unsigned mediumint. The 'unsigned' bit means that the field > won't store > negative values - this gives you twice the positive numbers you can > store. Otherwise if you're already using an unsigned data type, then > just go up to the next data type ( eg mediumint to int, or int to > bigint, etc ). -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
