From ddc5dddccb275bffbb06d9bc2a5e60eced84a151 Mon Sep 17 00:00:00 2001
From: David Fetter <david.fetter@onelogin.com>
Date: Mon, 22 Apr 2019 17:50:48 -0700
Subject: [PATCH v6] Show detailed table persistence in \dt+
To: hackers
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\d would show this for individual tables, but there wasn't an
overarching view of all tables. Now, there is.

diff --git a/src/bin/psql/describe.c b/src/bin/psql/describe.c
index ee00c5da08..46b1fad52d 100644
--- a/src/bin/psql/describe.c
+++ b/src/bin/psql/describe.c
@@ -3631,7 +3631,7 @@ listTables(const char *tabtypes, const char *pattern, bool verbose, bool showSys
 	PQExpBufferData buf;
 	PGresult   *res;
 	printQueryOpt myopt = pset.popt;
-	static const bool translate_columns[] = {false, false, true, false, false, false, false};
+	static const bool translate_columns[] = {false, false, true, false, false, false, false, false};
 
 	/* If tabtypes is empty, we default to \dtvmsE (but see also command.c) */
 	if (!(showTables || showIndexes || showViews || showMatViews || showSeq || showForeign))
@@ -3679,6 +3679,22 @@ listTables(const char *tabtypes, const char *pattern, bool verbose, bool showSys
 
 	if (verbose)
 	{
+		/*
+		 * Show whether a table is permanent, temporary, or unlogged.
+		 * Indexes are not, as of this writing, tables.
+		 */
+		if (!showIndexes)
+		{
+			if (pset.sversion >= 90100)
+				appendPQExpBuffer(&buf,
+								  ",\n  CASE c.relpersistence WHEN 'p' THEN 'permanent' WHEN 't' THEN 'temporary' WHEN 'u' THEN 'unlogged' ELSE 'unknown' END as \"%s\"",
+								  gettext_noop("Persistence"));
+			else if (pset.sversion >= 80400)
+				appendPQExpBuffer(&buf,
+								  ",\n CASE WHEN c.relistemp THEN 'temporary' ELSE 'permanent' END as \"%s\"",
+								  gettext_noop("Persistence"));
+		}
+
 		/*
 		 * As of PostgreSQL 9.0, use pg_table_size() to show a more accurate
 		 * size of a table, including FSM, VM and TOAST tables.

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