group_begin / group_end: Result Set Delimiters

This section describes the query delimiters that indicate where the results of a query begin and end.

group_begin message

The group_begin message marks the beginning of a set of records returned by a SOW query.

For more information, see the State of the World (SOW) Topics and Querying the State of the World (SOW) chapters in the AMPS User Guide.

Header Fields

The following table contains the header fields returned in a group_begin message:

Field	Description
Command	Type of message. Always group_begin, as encoded by the protocol.
QueryId	The QueryId of the query that produced this message.

group_end message

The group_end message marks the end of a set of records returned by a SOW query.

For more information, see the State of the World (SOW) Topics and Querying the State of the World (SOW) chapters in the AMPS User Guide.

Header Fields

The following table contains the header fields returned in a group_end message:

Field	Description
Command	Type of message. Always group_end, as encoded by the protocol.
QueryId	The QueryId of the query that produced this message.