doc: Remove incorrect note about wal_status in pg_replication_slots.

The documentation previously stated that the wal_status column is NULL
if restart_lsn is NULL in the pg_replication_slots view. This is incorrect,
and wal_status can be "lost" even when restart_lsn is NULL.

This commit removes the incorrect description.

Back-patched to all supported versions.

Author: Fujii Masao 
Reviewed-by: Nisha Moond 
Discussion: https://postgr.es/m/c9d23cdc-b5dd-455a-8ee9-f1f24d701d89@oss.nttdata.com
Backpatch-through: 13

diff --git a/doc/src/sgml/system-views.sgml b/doc/src/sgml/system-views.sgml
index 986ae1f543dbd0d7f57b88054c2bab48cb3ded5b..82825db03bb2f891b8a05c1cb00fba95b491950e 100644 (file)
--- a/doc/src/sgml/system-views.sgml
+++ b/doc/src/sgml/system-views.sgml
@@ -2832,8 +2832,7 @@ SELECT * FROM pg_locks pl LEFT JOIN pg_prepared_xacts ppx
        
        The last two states are seen only when
         is
-       non-negative. If restart_lsn is NULL, this
-       field is null.
+       non-negative.