$v_hist_queries, $v_hist_successful_queries, and $v_hist_unsuccessful_queries

The $v_hist_queries view shows information about the completed queries and their status, runtime seconds (for total, cumulative queued, prep time and GRA time), and number of plans. The $v_hist_successful_queries and $v_hist_unsuccessful_queries views show the same information as $v_hist_queries, but filters that information depending on whether each query was successful.

Table 1. $v_hist_queries, $v_hist_successful_queries, and $v_hist_unsuccessful_queries
Name	Description
npsid	A unique ID for the system. This value is generated as a sequence on the target database where this view is defined.
npsinstanceid	The instance ID of the nzstart command for the source Netezza Performance Server system.
opid	Operation ID, which is used as a foreign key from query epilog, overflow and plan, table, column access tables.
logentryid	This ID and the NPS ID (npsid) and instance ID (npsinstanceid) form a foreign key into the hist_log_entry_n table.
sessionid	The session ID. This ID is NULL for a failed authentication.
dbname	The name of the database to which the session is connected.
queryid	The unique checksum of the query.
query	The first 8 KB of the query text.
submittime	The time the query was submitted to Postgres.
finishtime	The time when the query execution finished and Postgres has the results. The query could still be returning the results to the client after this time.
runtime runtime_seconds	The total query run time (as interval and in seconds).
status verbose_status	The Query Completion status (as integer and text string).
queuetime queued_seconds	The amount of time the query was queued (as interval and in seconds).
preptime prep_seconds	The amount of time the query spent in "prep" stage (as interval and in seconds).
gratime gra_seconds	The amount of time that the query spent in GRA (as interval and in seconds).
numplans	The number of plans generated.
numrestarts	The cumulative number of times the plans were restarted.
client_user_id	The user ID under which the application that submitted the query. This field is available only in database version 3 or later.
client_application_name	The name of the application that submitted the query associated with the plan. This value is specified for the session, and is usually set by an application. This field is available only in database version 3 or later.
client_workstation_name	The host name of the workstation on which the application that submitted the query associated with the plan runs. This value is specified for the session, and is usually set by an application. This field is available only in database version 3 or later.
client_accounting_string	The value of the accounting string. This value is specified for the session, and is usually set by an application. This field is available only in database version 3 or later.