原文地址：http://www.cnblogs.com/guyueyanzi/archive/2010/02/27/1674788.html
Table 2-4 Default Data Type Mappings Used by Oracle SQL Developer
| MySQL Data Type | Oracle Data Type |
|---|---|
| BIGINT |
NUMBER(19, 0) |
| BIT |
RAW |
| BLOB |
BLOB, RAW |
| CHAR |
CHAR |
| DATE |
DATE |
| DATETIME |
DATE |
| DECIMAL |
FLOAT (24) |
| DOUBLE |
FLOAT (24) |
| DOUBLE PRECISION |
FLOAT (24) |
| ENUM |
VARCHAR2 |
| FLOAT |
FLOAT |
| INT |
NUMBER(10, 0) |
| INTEGER |
NUMBER(10, 0) |
| LONGBLOB |
BLOB, RAW |
| LONGTEXT |
CLOB, RAW |
| MEDIUMBLOB |
BLOB, RAW |
| MEDIUMINT |
NUMBER(7, 0) |
| MEDIUMTEXT |
CLOB, RAW |
| NUMERIC |
NUMBER |
| REAL |
FLOAT (24) |
| SET |
VARCHAR2 |
| SMALLINT |
NUMBER(5, 0) |
| TEXT |
VARCHAR2, CLOB |
| TIME |
DATE |
| TIMESTAMP |
DATE |
| TINYBLOB |
RAW |
| TINYINT |
NUMBER(3, 0) |
| TINYTEXT |
VARCHAR2 |
| VARCHAR |
VARCHAR2, CLOB |
| YEAR |
NUMBER |