PartitionQueryRequest class

The request for PartitionQuery


PartitionQueryRequest.fromJson(Map _json)


hashCode int
The hash code for this object. [...]
read-only, inherited
params Map<String, Object>
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. [...]
read / write
paramTypes Map<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 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 for more information about SQL types.
read / write
partitionOptions PartitionOptions
Additional options that affect how many partitions are created.
read / write
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited
sql String
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 with a PartitionedDml transaction for large, partition-friendly DML operations.
read / write
transaction TransactionSelector
Read only snapshot transactions are supported, read/write and single use transactions are not.
read / write


noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed. [...]
toJson() Map<String, Object>
toString() String
Returns a string representation of this object.


operator ==(Object other) bool
The equality operator. [...]