int mysql_stmt_store_result(MYSQL_STMT *stmt)
Result sets are produced by calling
executed prepared statements for SQL statements such as
EXPLAIN. By default, result
sets for successfully executed prepared statements are not
buffered on the client and
them one at a time from the server. To cause the complete
result set to be buffered on the client, call
after binding data buffers with
mysql_stmt_fetch() to fetch
rows. (For an example, see
Section 6.4.11, “mysql_stmt_fetch()”.)
optional for result set processing, unless you will call
functions require a seekable result set.
It is unnecessary to call
after executing an SQL statement that does not produce a
result set, but if you do, it does not harm or cause any
notable performance problem. You can detect whether the
statement produced a result set by checking whether
NULL. For more information, refer
to Section 6.4.23, “mysql_stmt_result_metadata()”.
MySQL does not by default calculate
MYSQL_FIELD->max_length for all
because calculating this would slow down
considerably and most applications do not need
max_length. If you want
max_length to be updated, you can call
STMT_ATTR_UPDATE_MAX_LENGTH, &flag) to enable
this. See Section 6.4.3, “mysql_stmt_attr_set()”.
Commands were executed in an improper order.
Out of memory.
The MySQL server has gone away.
The connection to the server was lost during the query.
An unknown error occurred.