9. Query Result Set Delimiters¶
AMPS provides a pair of delimiters, group_begin and group_end,
that indicate when a query result set begins and ends.
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 and SOW Queries chapters in the AMPS User Guide
Header Fields¶
| Field | Description |
|---|---|
Command |
Type of message. Always group_begin, as
encoded by the protocol. |
QueryId |
The QueryId of the query that produced this message. |
Header fields provided in group_begin
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 and SOW
Queries chapters in the AMPS User Guide
Header Fields¶
| Field | Description |
|---|---|
Command |
Type of message. Always group_end, as
encoded by the protocol. |
QueryId |
The QueryId of the query that produced this message. |
Header fields provided in group_end