public sealed class PartitionQueryRequest : IMessage<PartitionQueryRequest>, IEquatable<PartitionQueryRequest>, IDeepCloneable<PartitionQueryRequest>, IBufferMessage, IMessageReference documentation and code samples for the Google Cloud Spanner v1 API class PartitionQueryRequest.
The request for [PartitionQuery][google.spanner.v1.Spanner.PartitionQuery]
Implements
IMessagePartitionQueryRequest, IEquatablePartitionQueryRequest, IDeepCloneablePartitionQueryRequest, IBufferMessage, IMessageNamespace
Google.Cloud.Spanner.V1Assembly
Google.Cloud.Spanner.V1.dll
Constructors
PartitionQueryRequest()
public PartitionQueryRequest()PartitionQueryRequest(PartitionQueryRequest)
public PartitionQueryRequest(PartitionQueryRequest other)| Parameter | |
|---|---|
| Name | Description |
other | PartitionQueryRequest |
Properties
Params
public Struct Params { get; set; }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.
| Property Value | |
|---|---|
| Type | Description |
Struct | |
ParamTypes
public MapField<string, Type> ParamTypes { get; }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.PartitionQueryRequest.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 query parameters. See the
definition of [Type][google.spanner.v1.Type] for more information
about SQL types.
| Property Value | |
|---|---|
| Type | Description |
MapFieldstringType | |
PartitionOptions
public PartitionOptions PartitionOptions { get; set; }Additional options that affect how many partitions are created.
| Property Value | |
|---|---|
| Type | Description |
PartitionOptions | |
Session
public string Session { get; set; }Required. The session used to create the partitions.
| Property Value | |
|---|---|
| Type | Description |
string | |
SessionAsSessionName
public SessionName SessionAsSessionName { get; set; }SessionName-typed view over the Session resource name property.
| Property Value | |
|---|---|
| Type | Description |
SessionName | |
Sql
public string Sql { get; set; }Required. The query request to generate partitions for. The request will fail if the query is not root partitionable. The query plan of a root partitionable query has a single distributed union operator. A distributed union operator conceptually divides one or more tables into multiple splits, remotely evaluates a subquery independently on each split, and then unions all results.
This must not contain DML commands, such as INSERT, UPDATE, or DELETE. Use [ExecuteStreamingSql][google.spanner.v1.Spanner.ExecuteStreamingSql] with a PartitionedDml transaction for large, partition-friendly DML operations.
| Property Value | |
|---|---|
| Type | Description |
string | |
Transaction
public TransactionSelector Transaction { get; set; }Read only snapshot transactions are supported, read/write and single use transactions are not.
| Property Value | |
|---|---|
| Type | Description |
TransactionSelector | |