arrow_flight::sql::gen

Struct CommandStatementQuery

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pub struct CommandStatementQuery {
    pub query: String,
    pub transaction_id: Option<Bytes>,
}
Expand description

Represents a SQL query. Used in the command member of FlightDescriptor for the following RPC calls:

  • GetSchema: return the Arrow schema of the query. Fields on this schema may contain the following metadata:
    • ARROW:FLIGHT:SQL:CATALOG_NAME - Table’s catalog name
    • ARROW:FLIGHT:SQL:DB_SCHEMA_NAME - Database schema name
    • ARROW:FLIGHT:SQL:TABLE_NAME - Table name
    • ARROW:FLIGHT:SQL:TYPE_NAME - The data source-specific name for the data type of the column.
    • ARROW:FLIGHT:SQL:PRECISION - Column precision/size
    • ARROW:FLIGHT:SQL:SCALE - Column scale/decimal digits if applicable
    • ARROW:FLIGHT:SQL:IS_AUTO_INCREMENT - “1” indicates if the column is auto incremented, “0” otherwise.
    • ARROW:FLIGHT:SQL:IS_CASE_SENSITIVE - “1” indicates if the column is case-sensitive, “0” otherwise.
    • ARROW:FLIGHT:SQL:IS_READ_ONLY - “1” indicates if the column is read only, “0” otherwise.
    • ARROW:FLIGHT:SQL:IS_SEARCHABLE - “1” indicates if the column is searchable via WHERE clause, “0” otherwise.
  • GetFlightInfo: execute the query.

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§query: String

The SQL syntax.

§transaction_id: Option<Bytes>

Include the query as part of this transaction (if unset, the query is auto-committed).

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impl CommandStatementQuery

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pub fn transaction_id(&self) -> &[u8]

Returns the value of transaction_id, or the default value if transaction_id is unset.

Trait Implementations§

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impl Clone for CommandStatementQuery

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fn clone(&self) -> CommandStatementQuery

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for CommandStatementQuery

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

Formats the value using the given formatter. Read more
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impl Default for CommandStatementQuery

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fn default() -> Self

Returns the “default value” for a type. Read more
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impl Message for CommandStatementQuery

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fn encoded_len(&self) -> usize

Returns the encoded length of the message without a length delimiter.
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fn clear(&mut self)

Clears the message, resetting all fields to their default.
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fn encode(&self, buf: &mut impl BufMut) -> Result<(), EncodeError>
where Self: Sized,

Encodes the message to a buffer. Read more
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fn encode_to_vec(&self) -> Vec<u8>
where Self: Sized,

Encodes the message to a newly allocated buffer.
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fn encode_length_delimited( &self, buf: &mut impl BufMut, ) -> Result<(), EncodeError>
where Self: Sized,

Encodes the message with a length-delimiter to a buffer. Read more
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fn encode_length_delimited_to_vec(&self) -> Vec<u8>
where Self: Sized,

Encodes the message with a length-delimiter to a newly allocated buffer.
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fn decode(buf: impl Buf) -> Result<Self, DecodeError>
where Self: Default,

Decodes an instance of the message from a buffer. Read more
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fn decode_length_delimited(buf: impl Buf) -> Result<Self, DecodeError>
where Self: Default,

Decodes a length-delimited instance of the message from the buffer.
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fn merge(&mut self, buf: impl Buf) -> Result<(), DecodeError>
where Self: Sized,

Decodes an instance of the message from a buffer, and merges it into self. Read more
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fn merge_length_delimited(&mut self, buf: impl Buf) -> Result<(), DecodeError>
where Self: Sized,

Decodes a length-delimited instance of the message from buffer, and merges it into self.
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impl PartialEq for CommandStatementQuery

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

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl ProstMessageExt for CommandStatementQuery

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fn type_url() -> &'static str

type_url for this Message
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fn as_any(&self) -> Any

Convert this Message to Any
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impl StructuralPartialEq for CommandStatementQuery

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dst: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> FromRef<T> for T
where T: Clone,

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fn from_ref(input: &T) -> T

Converts to this type from a reference to the input type.
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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided [Span], returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoRequest<T> for T

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fn into_request(self) -> Request<T>

Wrap the input message T in a tonic::Request
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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fn vzip(self) -> V

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where S: Into<Dispatch>,

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where T: RefUnwindSafe + Send + Sync,