SVL_FEDERATED_QUERY

Use the SVL_FEDERATED_QUERY view to view information about a federated query call.

SVL_FEDERATED_QUERY is visible to all users. Superusers can see all rows; regular users can see only their own data. For more information, see Visibility of data in system tables and views.

Some or all of the data in this table can also be found in the SYS monitoring view SYS_EXTERNAL_QUERY_DETAIL. The data in the SYS monitoring view is formatted to be easier to use and understand. We recommend that you use the SYS monitoring view for your queries.

Table columns

Column name	Data type	Description
userid	integer	The ID of the user running the query.
xid	bigint	The transaction ID.
pid	integer	The ID of the leader process running the query.
query	integer	The query ID of a federated call.
sourcetype	character (32)	The federated call source type, for example "PG".
recordtime	timestamp	The time when a query is sent for federation. UTC is used.
querytext	character (4000)	The query string sent to the remote PostgreSQL engine for execution.
num_rows	bigint	The number of rows returned by the federated query.
num_bytes	bigint	The number of bytes returned by the federated query.
duration	bigint	The time (microseconds) spent fetching rows from cursor calls. It is the time spent running the federated query, as well as, getting results back.

Sample queries

To show information about federated query calls, run the following query.

select query, trim(sourcetype) as type, recordtime, trim(querytext) as "PG Subquery" from svl_federated_query where query = 4292;
                
 query | type |         recordtime         |                          pg subquery
-------+------+----------------------------+---------------------------------------------------------------
  4292 | PG   | 2020-03-27 04:29:58.485126 | SELECT "level" FROM functional.employees WHERE ("level" >= 6)
(1 row)