Struct datafusion::sql::sqlparser::ast::JsonTableColumn
source · pub struct JsonTableColumn {
pub name: Ident,
pub type: DataType,
pub path: Value,
pub exists: bool,
pub on_empty: Option<JsonTableColumnErrorHandling>,
pub on_error: Option<JsonTableColumnErrorHandling>,
}
Expand description
A single column definition in MySQL’s JSON_TABLE
table valued function.
SELECT *
FROM JSON_TABLE(
'["a", "b"]',
'$[*]' COLUMNS (
value VARCHAR(20) PATH '$'
)
) AS jt;
Fields§
§name: Ident
The name of the column to be extracted.
type: DataType
The type of the column to be extracted.
path: Value
The path to the column to be extracted. Must be a literal string.
exists: bool
true if the column is a boolean set to true if the given path exists
on_empty: Option<JsonTableColumnErrorHandling>
The empty handling clause of the column
on_error: Option<JsonTableColumnErrorHandling>
The error handling clause of the column
Trait Implementations§
source§impl Clone for JsonTableColumn
impl Clone for JsonTableColumn
source§fn clone(&self) -> JsonTableColumn
fn clone(&self) -> JsonTableColumn
Returns a copy of the value. Read more
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source
. Read moresource§impl Debug for JsonTableColumn
impl Debug for JsonTableColumn
source§impl Display for JsonTableColumn
impl Display for JsonTableColumn
source§impl Hash for JsonTableColumn
impl Hash for JsonTableColumn
source§impl Ord for JsonTableColumn
impl Ord for JsonTableColumn
source§fn cmp(&self, other: &JsonTableColumn) -> Ordering
fn cmp(&self, other: &JsonTableColumn) -> Ordering
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
Compares and returns the maximum of two values. Read more
source§impl PartialEq for JsonTableColumn
impl PartialEq for JsonTableColumn
source§fn eq(&self, other: &JsonTableColumn) -> bool
fn eq(&self, other: &JsonTableColumn) -> bool
This method tests for
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for JsonTableColumn
impl PartialOrd for JsonTableColumn
source§fn partial_cmp(&self, other: &JsonTableColumn) -> Option<Ordering>
fn partial_cmp(&self, other: &JsonTableColumn) -> Option<Ordering>
1.0.0 · source§fn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
This method tests less than or equal to (for
self
and other
) and is used by the <=
operator. Read moresource§impl Visit for JsonTableColumn
impl Visit for JsonTableColumn
source§impl VisitMut for JsonTableColumn
impl VisitMut for JsonTableColumn
fn visit<V>(&mut self, visitor: &mut V) -> ControlFlow<<V as VisitorMut>::Break>where
V: VisitorMut,
impl Eq for JsonTableColumn
impl StructuralPartialEq for JsonTableColumn
Auto Trait Implementations§
impl Freeze for JsonTableColumn
impl RefUnwindSafe for JsonTableColumn
impl Send for JsonTableColumn
impl Sync for JsonTableColumn
impl Unpin for JsonTableColumn
impl UnwindSafe for JsonTableColumn
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
source§impl<Q, K> Comparable<K> for Q
impl<Q, K> Comparable<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
Compare self to
key
and return true
if they are equal.source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
Converts
self
into a Left
variant of Either<Self, Self>
if into_left
is true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
Converts
self
into a Left
variant of Either<Self, Self>
if into_left(&self)
returns true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read more