mysql_fetch_field() 返回下一个表字段的类型。语法MYSQL_FIELD * mysql_fetch_field(MYSQL_RES *result) 返回值返回当前列的 MYSQL_FIELD 结构;如果没有剩余列,则返回 NULL。报错信息无。使用说明mysql_fetch_field() 将结果集的列定义返回给 MYSQL_FIELD 结构。可以...
;while((mysql_field=mysql_fetch_field(mysql_res))){printf("%s\t",mysql_field->name);}printf("\n");while((mysql_row=mysql_fetch_row(mysql_res))){for(unsignedinti=0;i<cols;i++){printf("%s\t",mysql_row[i]?mysql_row[i]:"NULL");}printf("\n");}mysql_free_result(mysql_res)...
Name mysql_fetch_fields( ) Synopsis MYSQL_FIELD *mysql_fetch_fields(MYSQL_RES *result) This returns an array of information about the fields in a results set. ... mysql_query(mysql, "SELECT * FROM clients"); result = mysql_store_result(mysql); num_fields
5.4.19 mysql_fetch_fields() MYSQL_FIELD*mysql_fetch_fields(MYSQL_RES*result) Description Returns an array of allMYSQL_FIELDstructures for a result set. Each structure provides the field definition for one column of the result set. Return Values ...
MYSQL_FIELD*mysql_fetch_field(MYSQL_RES*result) Description Returns the definition of one column of a result set as aMYSQL_FIELDstructure. Call this function repeatedly to retrieve information about all columns in the result set.mysql_fetch_field()returnsNULLwhen no more fields are left. ...
读取结果集中的一行: MYSQL_ROW mysql_fetch_row(MYSQL_RES *result) mysql_fetch_row 获得结果集中的域的属性: MYSQL_FIELD *mysql_fetch_field(MYSQL_RES *result) 获得域属性数组: MYSQL_FIELD *mysql_fetch_fields(MYSQL_RES *result) 查询被update、delete、insert等受影响的行: ...
1 MYSQL_FIELD *mysql_fetch_fields(MYSQL_RES *result); 描述:对于结果集,返回所有MYSQL_FIELD结构的数组。每个结构提供了结果集中1列的字段定义。 返回值:关于结果集所有列的MYSQL_FIELD结构的数组。 三、执行插入、删除、修改等SQL语句 示例如下: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 ...
mysql_fetch_field()is reset to return information about the first field each time you execute a newSELECTquery. The field returned bymysql_fetch_field()is also affected by calls tomysql_field_seek(). If you've calledmysql_real_query()ormysql_query()to perform aSELECTon a table but have...
int num_fields = mysql_num_fields(m_res); //参数数量 MYSQL_FIELD *fields = mysql_fetch_fields(m_res); //字段 for(int i = 0; i < num_fields; i++){ m_key_map.insert(make_pair(fields[i].name, i)); 以字段名,索引存储结果 ...