Statement(mapping=None, *, ignore_unknown_fields=False, **kwargs)
A single DML statement.
Attributes | |
---|---|
Name | Description |
sql |
str
Required. The DML string. |
params |
google.protobuf.struct_pb2.Struct
Parameter names and values that bind to placeholders in the DML 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="" +="">
It is an error to execute a SQL statement with unbound
parameters.
|
param_types |
MutableMapping[str, google.cloud.spanner_v1.types.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.ExecuteBatchDmlRequest.Statement.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.
|
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,
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 |