[−][src]Struct hdbconnect::ResultSetMetadata
Metadata for the fields in a result set.
Methods
impl ResultSetMetadata[src]
pub fn number_of_fields(&self) -> usize[src]
Returns the number of fields.
pub fn is_empty(&self) -> bool[src]
Returns true if the set of fields is empty.
pub fn schemaname(&self, i: usize) -> HdbResult<&String>[src]
Database schema of the i'th column in the resultset.
pub fn tablename(&self, i: usize) -> HdbResult<&String>[src]
Database table of the i'th column in the resultset.
pub fn columnname(&self, i: usize) -> HdbResult<&String>[src]
Name of the i'th column in the resultset.
pub fn displayname(&self, index: usize) -> HdbResult<&String>[src]
Display name of the column.
pub fn nullable(&self, i: usize) -> HdbResult<bool>[src]
True if column can contain NULL values.
pub fn has_default(&self, i: usize) -> HdbResult<bool>[src]
Returns true if the column has a default value.
pub fn read_only(&self, i: usize) -> HdbResult<bool>[src]
Returns true if the column is read-only.
pub fn is_auto_incremented(&self, i: usize) -> HdbResult<bool>[src]
Returns true if the column is auto-incremented.
pub fn is_array_type(&self, i: usize) -> HdbResult<bool>[src]
Returns true if the column is of array type.
pub fn type_id(&self, i: usize) -> HdbResult<TypeId>[src]
Returns the id of the value type.
pub fn scale(&self, i: usize) -> HdbResult<i16>[src]
Scale length (for some numeric types only).
pub fn precision(&self, i: usize) -> HdbResult<i16>[src]
Precision (for some numeric types only).
Trait Implementations
impl Clone for ResultSetMetadata[src]
fn clone(&self) -> ResultSetMetadata[src]
fn clone_from(&mut self, source: &Self)1.0.0[src]
Performs copy-assignment from source. Read more
impl Display for ResultSetMetadata[src]
impl Debug for ResultSetMetadata[src]
Auto Trait Implementations
impl Send for ResultSetMetadata
impl Sync for ResultSetMetadata
Blanket Implementations
impl<T, U> Into for T where
U: From<T>, [src]
U: From<T>,
impl<T> ToOwned for T where
T: Clone, [src]
T: Clone,
impl<T> ToString for T where
T: Display + ?Sized, [src]
T: Display + ?Sized,
impl<T> From for T[src]
impl<T, U> TryFrom for T where
U: Into<T>, [src]
U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>[src]
impl<T> Borrow for T where
T: ?Sized, [src]
T: ?Sized,
impl<T> Any for T where
T: 'static + ?Sized, [src]
T: 'static + ?Sized,
impl<T> BorrowMut for T where
T: ?Sized, [src]
T: ?Sized,
fn borrow_mut(&mut self) -> &mut T[src]
impl<T, U> TryInto for T where
U: TryFrom<T>, [src]
U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>[src]
impl<T> Same for T
type Output = T
Should always be Self