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...
(res); } } int main(int argc, char* argv[]) { MYSQL* conn; conn = mysql_init(NULL); if (!mysql_real_connect(conn, "host", "user", "pass", "db", 0, NULL, 0)) printf("Connect error: %s", mysql_error(conn)); MYSQL_STMT* stmt; stmt = mysql_stmt_init(conn); char ...
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. For me...
MYSQL_FIELD * mysql_fetch_field_direct(MYSQL_RES * res, unsigned int fieldnr); res - a result set identifier returned by mysql_store_result() or mysql_use_result(). fieldnr - the field number. This value must be within the range from 0 to number of fields - 1 Description Return...
MYSQL_FIELD * mysql_fetch_field_direct(MYSQL_RES *result, unsigned int fieldnr) Description Given a field numberfieldnrfor a column within a result set, returns that column's field definition as aMYSQL_FIELDstructure. Use this function to retrieve the definition for an arbitrary column. Specify...
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...
MYSQL_FIELD*mysql_fetch_field_direct(MYSQL_RES*result,unsignedintfieldnr) Description Given a field numberfieldnrfor a column within a result set, returns that column's field definition as aMYSQL_FIELDstructure. Use this function to retrieve the definition for an arbitrary column. Specify a value...
MYSQL_FIELD * mysql_fetch_field_direct(MYSQL_RES *result, unsigned int fieldnr) The value offieldnrranges from 0 tomysql_num_fields(result)-1. Return values TheMYSQL_FIELDstructure for the specified column is returned. Errors None.
MYSQL_FIELD *f =mysql_fetch_field(res);inti =1;while(f) {if(f -> name) m_nmap[f -> name] = i; f =mysql_fetch_field(res); i++; } m_num_cols = i -1; } } }returnres; } 开发者ID:blackshadowwalker,项目名称:wx_kk_up,代码行数:28,代码来源:Query.cpp ...