The type of the field. The type value may be one of the MYSQL_TYPE_ symbols shown in the following table.
Type Value Type Description
MYSQL_TYPE_TINY TINYINT field
MYSQL_TYPE_SHORT SMALLINT field
MYSQL_TYPE_LONG INTEGER field
MYSQL_TYPE_INT24 MEDIUMINT field
MYSQL_TYPE_LONGLONG BIGINT field
MYSQL_TYPE_DECIMAL DECIMAL or NUMERIC field
MYSQL_TYPE_NEWDECIMAL Precision math DECIMAL or NUMERIC
MYSQL_TYPE_FLOAT FLOAT field
MYSQL_TYPE_DOUBLE DOUBLE or REAL field
MYSQL_TYPE_BIT BIT field
MYSQL_TYPE_TIMESTAMP TIMESTAMP field
MYSQL_TYPE_DATE DATE field
MYSQL_TYPE_TIME TIME field
MYSQL_TYPE_DATETIME DATETIME field
MYSQL_TYPE_YEAR YEAR field
MYSQL_TYPE_STRING CHAR or BINARY field
MYSQL_TYPE_VAR_STRING VARCHAR or VARBINARY field
MYSQL_TYPE_BLOB BLOB or TEXT field (use max_length to determine the maximum length)
MYSQL_TYPE_SET SET field
MYSQL_TYPE_ENUM ENUM field
MYSQL_TYPE_GEOMETRY Spatial field
MYSQL_TYPE_NULL NULL-type field
You can use the IS_NUM() macro to test whether a field has a numeric type. Pass the type value to IS_NUM() and it evaluates to TRUE if the field is numeric:
if (IS_NUM(field->type))
printf("Field is numeric\n");
谢谢楼上回复,问题能解决了,,1)用field->type 来switch()枚举表能解析出来了,但麻烦点,
2)show full columns from (table_name) 比较方便快捷,
3)SELECT * FROM `information_schema`.`COLUMNS` where `TABLE_NAME`='db_account' and `TABLE_SCHEMA`='bus' 更方便,因为已经将Varch(13) 分成 varchar 13两个字段,信息更多更细