FreeBSD manual

download PDF document: mysql_fetch_lengths.3.pdf

mysql_fetch_lengths(3) MariaDB Connector/C mysql_fetch_lengths(3)
Name mysql_fetch_lengths - returns an array of length values for the current row
Synopsis
#include <mysql.h>
unsigned long * mysql_fetch_lengths(MYSQL_RES * result);

Description The mysql_fetch_lengths() function returns an array containing the lengths of every column of the current row within the result set (not including terminating zero character) or NULL if an error occurred.
Parameter o result - a result set identifier returned by mysql_store_result(3) or mysql_use_result(3). ### Notes mysql_fetch_lengths() is valid only for the current row of the result set. It returns NULL if you call it before calling mysql_fetch_row(3) or after retrieving all rows in the result.
Return value An array of unsigned long values . The size of the array can be determined by the number of fields in current result set.
See also o mysql_field_count(3)
o mysql_fetch_row(3)
Version 3.3.1 mysql_fetch_lengths(3)