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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.

此版本暂无所选语言的定义，以下显示原始英文内容。

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

未知

view

pg_stat_activity