编码	中文描述
1	CHAR
2	VARCHAR
3	TINYBLOB
4	TINYTEXT
5	BLOB
6	TEXT
7	MEDIUMBLOB
8	MEDIUMTEXT
9	LONGBLOB
10	LONGTEXT
11	DATE
12	TIME
13	YEAR
14	DATETIME
15	TIMESTAMP
16	TINYINT
17	SMALLINT
18	MEDIUMINT
19	INT/INTEGER
20	BIGINT
21	FLOAT
22	DOUBLE
23	DECIMAL
24	BINARY
25	VARBINARY
26	IMAGE