pg_stat_activity.leader_pid
Process ID of the parallel group leader if this process is a parallel query worker, or process ID of the leader apply worker if this process is a parallel apply worker. NULL indicates that this process is a parallel group leader or leader apply worker, or does not participate in any parallel operation.
Reading PG 18·Select a recorded version
- View
- pg_stat_activity
- Field
- leader_pid
- SQL type
- integer
- Units named in the field definition
- Not specified
- Reset observation
- No stats_reset field is documented for this view
- documented
- true
- field
- leader_pid
- manual path
- /docs/18/monitoring-stats.html
- signature
- SELECT leader_pid FROM pg_catalog.pg_stat_activity;
- source only
- false
- sql type
- integer
- units mentioned
- Unknown
- view
- pg_stat_activity
Definition PG 18
Process ID of the parallel group leader if this process is a parallel query worker, or process ID of the leader apply worker if this process is a parallel apply worker. NULL indicates that this process is a parallel group leader or leader apply worker, or does not participate in any parallel operation.
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Source references
Full definition and evidence JSON
Definition sources
center · PostgreSQL 18 · 555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f
Text language: en · 555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f