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mysql_stmt_attr_get(3) MariaDB Connector/C mysql_stmt_attr_get(3)
Name
mysql_stmt_attr_get - Gets the current value of a statement attribute
Synopsis
#include <mysql.h>
my_bool mysql_stmt_attr_get(MYSQL_STMT * stmt,
enum enum_stmt_attr_type,
void * attr);
Description
Gets the current value of a statement attribute. Returns zero on suc-
cess, non zero on failure.
Parameter
• stmt - a statement handle, which was previously allocated by
mysql_stmt_init(3).
• enum_stmt_attr_type - attribute. See below.
• attr - pointer to a variable, which will contain the attribute value.
Attribute types
The enum_stmt_attr_type parameter has the following possible values:
Value Type Description
-----------------------------------------------------------------------------
STMT_ATTR_UP- my_bool * Indicates if
DATE_MAX_LENGTH mysql_stmt_store_re-
sult(3) will update the
max_length value of
MYSQL_FIELD structures.
STMT_ATTR_CURSOR_TYPE unsigned long * Possible values are
CURSOR_TYPE_READ_ONLY
or default value CUR-
SOR_TYPE_NO_CURSOR.
STMT_ATTR_PREFETCH_ROWS unsigned long * Number of rows which
will be prefetched.
The default value is 1.
STMT_ATTR_PRE- unsigned int * Number of parameters
BIND_PARAMS used for mari-
adb_stmt_execute_di-
rect(3)
STMT_ATTR_STATE enum mysql_stmt_state * Status of prepared
statement. Possible
values are defined in
enum mysql_stmt_state.
This option was added
in MariaDB Connector/C
3.1.0
Notes
• Setting the number of prefetched rows will work only for read only
cursors.
See Also
• mysql_stmt_attr_set(3)
Version 3.4 mysql_stmt_attr_get(3)
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