Class ExecuteSqlRequest (2.1.0)

ExecuteSqlRequest(mapping=None, *, ignore_unknown_fields=False, **kwargs)

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

Attributes

Name	Description
session	`str` Required. The session in which the SQL query should be performed.
transaction	`.gs_transaction.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	`str` Required. The SQL string.
params	`.struct.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 can contain letters, numbers, and underscores. 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	Sequence[`.spanner.ExecuteSqlRequest.ParamTypesEntry`] 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	`bytes` 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	`.spanner.ExecuteSqlRequest.QueryMode` 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	`bytes` 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	`int` 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	`.spanner.ExecuteSqlRequest.QueryOptions` Query optimizer configuration to use for the given query.

Inheritance

builtins.object > proto.message.Message > ExecuteSqlRequest

Classes

ParamTypesEntry

ParamTypesEntry(mapping=None, *, ignore_unknown_fields=False, **kwargs)

The abstract base class for a message.

Parameters

Name	Description
kwargs	`dict` Keys and values corresponding to the fields of the message.
mapping	Union[dict, `.Message`] A dictionary or message to be used to determine the values for this message.
ignore_unknown_fields	`Optional(bool)` If True, do not raise errors for unknown fields. Only applied if `mapping` is a mapping type or there are keyword parameters.

QueryMode

QueryMode(value)

Mode in which the statement must be processed.

QueryOptions

QueryOptions(mapping=None, *, ignore_unknown_fields=False, **kwargs)

Query optimizer configuration.