unixODBC应用编程-- 数据类型与 C 类型对应关系（2）

Type identifier             ODBC typedef                              C typedef

SQL_C_CHAR            SQLCHAR *                                 unsigned char *

SQL_C_SSHORT        SQLSMALLINT                           short int

SQL_C_USHORT        SQLUSMALLINT                        unsigned short int

SQL_C_SLONG          SQLINTEGER                             ong int

SQL_C_FLOAT          SQLREAL                                    float

SQL_C_DOUBLE        SQLDOUBLE, SQLFLOAT           double

SQL_C_BINARY         SQLCHAR *                                unsigned char

SQL_C_TYPE_DATE    SQL_DATE_STRUCT         struct  tagDATE_STRUCT {

                                                                                    SQLSMALLINT year;

                                                                                    SQLUSMALLINT month;

                                                                                    SQLUSMALLINT day;

                                                                                   } DATE_STRUCT;

SQL_C_TYPE_TIME    SQL_TIME_STRUCT         struct  tagTIME_STRUCT {
                                                                                   SQLUSMALLINT hour;
                                                                                   SQLUSMALLINT minute;
                                                                                   SQLUSMALLINT second;
                                                                                   } TIME_STRUCT;