Struct google_cloud_googleapis::spanner::v1::ExecuteSqlRequest

pub struct ExecuteSqlRequest {
    pub session: String,
    pub transaction: Option<TransactionSelector>,
    pub sql: String,
    pub params: Option<Struct>,
    pub param_types: HashMap<String, Type>,
    pub resume_token: Vec<u8>,
    pub query_mode: i32,
    pub partition_token: Vec<u8>,
    pub seqno: i64,
    pub query_options: Option<QueryOptions>,
    pub request_options: Option<RequestOptions>,
}

The request for [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql] and [ExecuteStreamingSql][google.spanner.v1.Spanner.ExecuteStreamingSql].

Fields

session: String

Required. The session in which the SQL query should be performed.

transaction: Option<TransactionSelector>

The transaction to use.

For queries, if none is provided, the default is a temporary read-only transaction with strong concurrency.

Standard DML statements require a read-write transaction. To protect against replays, single-use transactions are not supported. The caller must either supply an existing transaction ID or begin a new transaction.

Partitioned DML requires an existing Partitioned DML transaction ID.

sql: String

Required. The SQL string.

params: Option<Struct>

Parameter names and values that bind to placeholders in the SQL string.

A parameter placeholder consists of the @ character followed by the parameter name (for example, @firstName). Parameter names must conform to the naming requirements of identifiers as specified at https://cloud.google.com/spanner/docs/lexical#identifiers.

Parameters can appear anywhere that a literal value is expected. The same parameter name can be used more than once, for example:

"WHERE id > @msg_id AND id < @msg_id + 100"

It is an error to execute a SQL statement with unbound parameters.

param_types: HashMap<String, Type>

It is not always possible for Cloud Spanner to infer the right SQL type from a JSON value. For example, values of type BYTES and values of type STRING both appear in [params][google.spanner.v1.ExecuteSqlRequest.params] as JSON strings.

In these cases, param_types can be used to specify the exact SQL type for some or all of the SQL statement parameters. See the definition of [Type][google.spanner.v1.Type] for more information about SQL types.

resume_token: Vec<u8>

If this request is resuming a previously interrupted SQL statement execution, resume_token should be copied from the last [PartialResultSet][google.spanner.v1.PartialResultSet] yielded before the interruption. Doing this enables the new SQL statement execution to resume where the last one left off. The rest of the request parameters must exactly match the request that yielded this token.

query_mode: i32

Used to control the amount of debugging information returned in [ResultSetStats][google.spanner.v1.ResultSetStats]. If [partition_token][google.spanner.v1.ExecuteSqlRequest.partition_token] is set, [query_mode][google.spanner.v1.ExecuteSqlRequest.query_mode] can only be set to [QueryMode.NORMAL][google.spanner.v1.ExecuteSqlRequest.QueryMode.NORMAL].

partition_token: Vec<u8>

If present, results will be restricted to the specified partition previously created using PartitionQuery(). There must be an exact match for the values of fields common to this message and the PartitionQueryRequest message used to create this partition_token.

seqno: i64

A per-transaction sequence number used to identify this request. This field makes each request idempotent such that if the request is received multiple times, at most one will succeed.

The sequence number must be monotonically increasing within the transaction. If a request arrives for the first time with an out-of-order sequence number, the transaction may be aborted. Replays of previously handled requests will yield the same response as the first execution.

Required for DML statements. Ignored for queries.

query_options: Option<QueryOptions>

Query optimizer configuration to use for the given query.

request_options: Option<RequestOptions>

Common options for this request.

Implementations

impl ExecuteSqlRequest

pub fn query_mode(&self) -> QueryMode

Returns the enum value of query_mode, or the default if the field is set to an invalid enum value.

pub fn set_query_mode(&mut self, value: QueryMode)

Sets query_mode to the provided enum value.

Trait Implementations

impl Clone for ExecuteSqlRequest

fn clone(&self) -> ExecuteSqlRequest

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ExecuteSqlRequest

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

Formats the value using the given formatter.

impl Default for ExecuteSqlRequest

fn default() -> Self

Returns the “default value” for a type.

impl Message for ExecuteSqlRequest

fn encoded_len(&self) -> usize

Returns the encoded length of the message without a length delimiter.

fn clear(&mut self)

Clears the message, resetting all fields to their default.

fn encode<B>(&self, buf: &mut B) -> Result<(), EncodeError> where
    B: BufMut, 

Encodes the message to a buffer.

fn encode_to_vec(&self) -> Vec<u8, Global>

Encodes the message to a newly allocated buffer.

fn encode_length_delimited<B>(&self, buf: &mut B) -> Result<(), EncodeError> where
    B: BufMut, 

Encodes the message with a length-delimiter to a buffer.

fn encode_length_delimited_to_vec(&self) -> Vec<u8, Global>

Encodes the message with a length-delimiter to a newly allocated buffer.

fn decode<B>(buf: B) -> Result<Self, DecodeError> where
    B: Buf,
    Self: Default, 

Decodes an instance of the message from a buffer.

fn decode_length_delimited<B>(buf: B) -> Result<Self, DecodeError> where
    B: Buf,
    Self: Default, 

Decodes a length-delimited instance of the message from the buffer.

fn merge<B>(&mut self, buf: B) -> Result<(), DecodeError> where
    B: Buf, 

Decodes an instance of the message from a buffer, and merges it into self.

fn merge_length_delimited<B>(&mut self, buf: B) -> Result<(), DecodeError> where
    B: Buf, 

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

impl PartialEq<ExecuteSqlRequest> for ExecuteSqlRequest

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

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

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

This method tests for !=.

impl StructuralPartialEq for ExecuteSqlRequest