Enum odbc_sys::FreeStmtOption

#[repr(u16)]
pub enum FreeStmtOption {
    Close,
    Unbind,
    ResetParams,
}

SQL Free Statement options

Variants

Close

Closes the cursor associated with StatementHandle (if one was defined) and discards all pending results. The application can reopen this cursor later by executing a SELECT statement again with the same or different parameter values. If no cursor is open, this option has no effect for the application. SQLCloseCursor can also be called to close a cursor.

Unbind

Sets the SQL_DESC_COUNT field of the ARD to 0, releasing all column buffers bound by SQLBindCol for the given StatementHandle. This does not unbind the bookmark column; to do that, the SQL_DESC_DATA_PTR field of the ARD for the bookmark column is set to NULL. Notice that if this operation is performed on an explicitly allocated descriptor that is shared by more than one statement, the operation will affect the bindings of all statements that share the descriptor.

ResetParams

Sets the SQL_DESC_COUNT field of the APD to 0, releasing all parameter buffers set by SQLBindParameter for the given StatementHandle. If this operation is performed on an explicitly allocated descriptor that is shared by more than one statement, this operation will affect the bindings of all the statements that share the descriptor.

Trait Implementations

impl Clone for FreeStmtOption

fn clone(&self) -> FreeStmtOption

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for FreeStmtOption

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq<FreeStmtOption> for FreeStmtOption

fn eq(&self, other: &FreeStmtOption) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for FreeStmtOption

impl Eq for FreeStmtOption

impl StructuralEq for FreeStmtOption

impl StructuralPartialEq for FreeStmtOption