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e64aa1a39d
Improve the documentation of pg_stat_replication to explain when the backend_xmin column becomes NULL. This happens when a replication slot is used (the xmin is then shown in pg_replication_slots) or when hot_standby_feedback is disabled. Author: Renzo Dani <arons7@gmail.com> Reviewed-by: Fujii Masao <masao.fujii@gmail.com> Discussion: https://postgr.es/m/CA+XOKQAMXzskpdUmj2sg03_5fmiXc2Gs0r3TX1_rmcFcqh+=xQ@mail.gmail.com |
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