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Show table persistence in psql's \dt+ and related commands.

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In verbose mode, listTables() now emits a "Persistence" column
showing whether the table/index/view/etc is permanent, temporary,
or unlogged.

David Fetter, reviewed by Fabien Coelho and Rafia Sabih

Discussion: https://postgr.es/m/20190423005642.GZ28936@fetter.org
This commit is contained in:
Tom Lane 2019-07-03 11:46:34 -04:00
parent a5be4062f7
commit 9a2ea61832
1 changed files with 28 additions and 2 deletions

30
src/bin/psql/describe.c

@ -3632,7 +3632,8 @@ 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};
int cols_so_far;
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))
@ -3672,14 +3673,39 @@ listTables(const char *tabtypes, const char *pattern, bool verbose, bool showSys
gettext_noop("partitioned index"),
gettext_noop("Type"),
gettext_noop("Owner"));
cols_so_far = 4;
if (showIndexes)
{
appendPQExpBuffer(&buf,
",\n c2.relname as \"%s\"",
",\n c2.relname as \"%s\"",
gettext_noop("Table"));
cols_so_far++;
}
if (verbose)
{
/*
* Show whether a relation is permanent, temporary, or unlogged. Like
* describeOneTableDetails(), we consider that persistence emerged in
* v9.1, even though related concepts existed before.
*/
if (pset.sversion >= 90100)
{
appendPQExpBuffer(&buf,
",\n CASE c.relpersistence WHEN 'p' THEN '%s' WHEN 't' THEN '%s' WHEN 'u' THEN '%s' END as \"%s\"",
gettext_noop("permanent"),
gettext_noop("temporary"),
gettext_noop("unlogged"),
gettext_noop("Persistence"));
translate_columns[cols_so_far] = true;
}
/*
* We don't bother to count cols_so_far below here, as there's no need
* to; this might change with future additions to the output columns.
*/
/*
* As of PostgreSQL 9.0, use pg_table_size() to show a more accurate
* size of a table, including FSM, VM and TOAST tables.