MySQL 5.6 C API Developer Guide
int mysql_stmt_fetch_column(MYSQL_STMT *stmt, MYSQL_BIND *bind, unsigned int column, unsigned long offset)
Fetches one column from the current result set row.
bind
provides the buffer where data should
be placed. It should be set up the same way as for
mysql_stmt_bind_result()
.
column
indicates which column to fetch. The
first column is numbered 0. offset
is the
offset within the data value at which to begin retrieving
data. This can be used for fetching the data value in pieces.
The beginning of the value is offset 0.
Invalid column number.
The end of the result set has already been reached.