MySQL FLAG Constants
 
These flags are used along with the FIELD_TYPE to indicate various
properties of columns in a result set.

Data
		AUTO_INCREMENT = 512 BINARY = 128 BLOB = 16 ENUM = 256 GROUP = 32768 MULTIPLE_KEY = 8 NOT_NULL = 1 NUM = 32768 PART_KEY = 16384 PRI_KEY = 2 SET = 2048 TIMESTAMP = 1024 UNIQUE = 65536 UNIQUE_KEY = 4 UNSIGNED = 32 ZEROFILL = 64