diff --git a/contrib/bloom/bloom--1.0.sql b/contrib/bloom/bloom--1.0.sql
index 7fa751361aa81b9fc639520541bf2838cf6c1c0b..87b5442568191b48993de3264a7dc01015c30cdf 100644
--- a/contrib/bloom/bloom--1.0.sql
+++ b/contrib/bloom/bloom--1.0.sql
@@ -5,6 +5,7 @@ LANGUAGE C;
-- Access method
CREATE ACCESS METHOD bloom TYPE INDEX HANDLER blhandler;
+COMMENT ON ACCESS METHOD bloom IS 'bloom index access method';
-- Opclasses
diff --git a/doc/src/sgml/ref/comment.sgml b/doc/src/sgml/ref/comment.sgml
index 3321d4b49d67929450032f468ee4be9d5ed5874f..fdebbffc70581b0fafc5e61bdf4b4122c0daffa0 100644
--- a/doc/src/sgml/ref/comment.sgml
+++ b/doc/src/sgml/ref/comment.sgml
@@ -23,6 +23,7 @@ PostgreSQL documentation
<synopsis>
COMMENT ON
{
+ ACCESS METHOD <replaceable class="PARAMETER">object_name</replaceable> |
AGGREGATE <replaceable class="PARAMETER">aggregate_name</replaceable> ( <replaceable>aggregate_signature</replaceable> ) |
CAST (<replaceable>source_type</replaceable> AS <replaceable>target_type</replaceable>) |
COLLATION <replaceable class="PARAMETER">object_name</replaceable> |
@@ -89,6 +90,8 @@ COMMENT ON
Roles don't have owners, so the rule for <literal>COMMENT ON ROLE</> is
that you must be superuser to comment on a superuser role, or have the
<literal>CREATEROLE</> privilege to comment on non-superuser roles.
+ Likewise, access methods don't have owners either; you must be superuser
+ to comment on an access method.
Of course, a superuser can comment on anything.
</para>
@@ -296,6 +299,7 @@ COMMENT ON TABLE mytable IS NULL;
Some more examples:
<programlisting>
+COMMENT ON ACCESS METHOD rtree IS 'R-Tree access method';
COMMENT ON AGGREGATE my_aggregate (double precision) IS 'Computes sample variance';
COMMENT ON CAST (text AS int4) IS 'Allow casts from text to int4';
COMMENT ON COLLATION "fr_CA" IS 'Canadian French';
diff --git a/doc/src/sgml/ref/psql-ref.sgml b/doc/src/sgml/ref/psql-ref.sgml
index 06803ab89ca08e3f1021e5c1021ee9ffc1f38aca..aef72284d26de081563c2515999d20589d17ca37 100644
--- a/doc/src/sgml/ref/psql-ref.sgml
+++ b/doc/src/sgml/ref/psql-ref.sgml
@@ -1130,6 +1130,19 @@ testdb=>
</listitem>
</varlistentry>
+ <varlistentry>
+ <term><literal>\dA[+] [ <link linkend="APP-PSQL-patterns"><replaceable class="parameter">pattern</replaceable></link> ]</literal></term>
+
+ <listitem>
+ <para>
+ Lists access methods. If <replaceable
+ class="parameter">pattern</replaceable> is specified, only access
+ methods whose names match the pattern are shown. If
+ <literal>+</literal> is appended to the command name, each access
+ method is listed with its associated handler function and description.
+ </para>
+ </listitem>
+ </varlistentry>
<varlistentry>
<term><literal>\db[+] [ <link linkend="APP-PSQL-patterns"><replaceable class="parameter">pattern</replaceable></link> ]</literal></term>
diff --git a/src/backend/parser/gram.y b/src/backend/parser/gram.y
index ad338d3ddbe0f039fc2a4f83ffc0121fc64cffb7..2c950f937c49a1513867c590592ba412726c023f 100644
--- a/src/backend/parser/gram.y
+++ b/src/backend/parser/gram.y
@@ -5693,7 +5693,8 @@ opt_restart_seqs:
* The COMMENT ON statement can take different forms based upon the type of
* the object associated with the comment. The form of the statement is:
*
- * COMMENT ON [ [ CONVERSION | COLLATION | DATABASE | DOMAIN |
+ * COMMENT ON [ [ ACCESS METHOD | CONVERSION | COLLATION |
+ * DATABASE | DOMAIN |
* EXTENSION | EVENT TRIGGER | FOREIGN DATA WRAPPER |
* FOREIGN TABLE | INDEX | [PROCEDURAL] LANGUAGE |
* MATERIALIZED VIEW | POLICY | ROLE | SCHEMA | SEQUENCE |
@@ -5713,7 +5714,7 @@ opt_restart_seqs:
* OPERATOR FAMILY <name> USING <access-method> |
* RULE <rulename> ON <relname> |
* TRIGGER <triggername> ON <relname> ]
- * IS 'text'
+ * IS { 'text' | NULL }
*
*****************************************************************************/
@@ -5888,7 +5889,8 @@ CommentStmt:
;
comment_type:
- COLUMN { $$ = OBJECT_COLUMN; }
+ ACCESS METHOD { $$ = OBJECT_ACCESS_METHOD; }
+ | COLUMN { $$ = OBJECT_COLUMN; }
| DATABASE { $$ = OBJECT_DATABASE; }
| SCHEMA { $$ = OBJECT_SCHEMA; }
| INDEX { $$ = OBJECT_INDEX; }
diff --git a/src/bin/psql/command.c b/src/bin/psql/command.c
index 693b5312afc1395afe936645e7ae894089c79263..543fe5f5569a1895b0bb01615116332b49094471 100644
--- a/src/bin/psql/command.c
+++ b/src/bin/psql/command.c
@@ -402,6 +402,9 @@ exec_command(const char *cmd,
/* standard listing of interesting things */
success = listTables("tvmsE", NULL, show_verbose, show_system);
break;
+ case 'A':
+ success = describeAccessMethods(pattern, show_verbose);
+ break;
case 'a':
success = describeAggregates(pattern, show_verbose, show_system);
break;
diff --git a/src/bin/psql/describe.c b/src/bin/psql/describe.c
index 0a771bd2107fd41336a1148c06ff772c35f84dca..2a05cf95dabfb601b75641f19305d313d3521624 100644
--- a/src/bin/psql/describe.c
+++ b/src/bin/psql/describe.c
@@ -129,6 +129,70 @@ describeAggregates(const char *pattern, bool verbose, bool showSystem)
return true;
}
+/* \dA
+ * Takes an optional regexp to select particular access methods
+ */
+bool
+describeAccessMethods(const char *pattern, bool verbose)
+{
+ PQExpBufferData buf;
+ PGresult *res;
+ printQueryOpt myopt = pset.popt;
+ static const bool translate_columns[] = {false, true, false};
+
+ if (pset.sversion < 90600)
+ {
+ psql_error("The server (version %d.%d) does not support access methods.\n",
+ pset.sversion / 10000, (pset.sversion / 100) % 100);
+ return true;
+ }
+
+ initPQExpBuffer(&buf);
+
+ printfPQExpBuffer(&buf,
+ "SELECT amname AS \"%s\",\n"
+ " CASE amtype"
+ " WHEN 'i' THEN '%s'"
+ " END AS \"%s\"",
+ gettext_noop("Name"),
+ gettext_noop("Index"),
+ gettext_noop("Type"));
+
+ if (verbose)
+ {
+ appendPQExpBuffer(&buf,
+ ",\n amhandler AS \"%s\",\n"
+ " pg_catalog.obj_description(oid, 'pg_am') AS \"%s\"",
+ gettext_noop("Handler"),
+ gettext_noop("Description"));
+ }
+
+ appendPQExpBufferStr(&buf,
+ "\nFROM pg_catalog.pg_am\n");
+
+ processSQLNamePattern(pset.db, &buf, pattern, false, false,
+ NULL, "amname", NULL,
+ NULL);
+
+ appendPQExpBufferStr(&buf, "ORDER BY 1;");
+
+ res = PSQLexec(buf.data);
+ termPQExpBuffer(&buf);
+ if (!res)
+ return false;
+
+ myopt.nullPrint = NULL;
+ myopt.title = _("List of access methods");
+ myopt.translate_header = true;
+ myopt.translate_columns = translate_columns;
+ myopt.n_translate_columns = lengthof(translate_columns);
+
+ printQuery(res, &myopt, pset.queryFout, false, pset.logfile);
+
+ PQclear(res);
+ return true;
+}
+
/* \db
* Takes an optional regexp to select particular tablespaces
*/
diff --git a/src/bin/psql/describe.h b/src/bin/psql/describe.h
index 96722756b46dcb2bacf9353f336e5a2f434d1197..20a650861b6426ce117b4c7f8c76f42c2ab778db 100644
--- a/src/bin/psql/describe.h
+++ b/src/bin/psql/describe.h
@@ -12,6 +12,9 @@
/* \da */
extern bool describeAggregates(const char *pattern, bool verbose, bool showSystem);
+/* \dA */
+extern bool describeAccessMethods(const char *pattern, bool verbose);
+
/* \db */
extern bool describeTablespaces(const char *pattern, bool verbose);
diff --git a/src/bin/psql/help.c b/src/bin/psql/help.c
index b4021417863625e3b71eaf012e5c9eb5d77d3e6d..0d0461dc2a7e15db6bfa5b8b8d4d8fd8c0397eec 100644
--- a/src/bin/psql/help.c
+++ b/src/bin/psql/help.c
@@ -215,6 +215,7 @@ slashUsage(unsigned short int pager)
fprintf(output, _(" \\d[S+] list tables, views, and sequences\n"));
fprintf(output, _(" \\d[S+] NAME describe table, view, sequence, or index\n"));
fprintf(output, _(" \\da[S] [PATTERN] list aggregates\n"));
+ fprintf(output, _(" \\dA[+] [PATTERN] list access methods\n"));
fprintf(output, _(" \\db[+] [PATTERN] list tablespaces\n"));
fprintf(output, _(" \\dc[S+] [PATTERN] list conversions\n"));
fprintf(output, _(" \\dC[+] [PATTERN] list casts\n"));
diff --git a/src/bin/psql/tab-complete.c b/src/bin/psql/tab-complete.c
index a62ffe61e051cabda6fb60b449812163194a90b6..3b07726e5747703599f0405c489df5b58e40522c 100644
--- a/src/bin/psql/tab-complete.c
+++ b/src/bin/psql/tab-complete.c
@@ -1276,7 +1276,7 @@ psql_completion(const char *text, int start, int end)
static const char *const backslash_commands[] = {
"\\a", "\\connect", "\\conninfo", "\\C", "\\cd", "\\copy",
"\\copyright", "\\crosstabview",
- "\\d", "\\da", "\\db", "\\dc", "\\dC", "\\dd", "\\ddp", "\\dD",
+ "\\d", "\\da", "\\dA", "\\db", "\\dc", "\\dC", "\\dd", "\\ddp", "\\dD",
"\\des", "\\det", "\\deu", "\\dew", "\\dE", "\\df",
"\\dF", "\\dFd", "\\dFp", "\\dFt", "\\dg", "\\di", "\\dl", "\\dL",
"\\dm", "\\dn", "\\do", "\\dO", "\\dp", "\\drds", "\\ds", "\\dS",
@@ -1910,7 +1910,8 @@ psql_completion(const char *text, int start, int end)
else if (Matches2("COMMENT", "ON"))
{
static const char *const list_COMMENT[] =
- {"CAST", "COLLATION", "CONVERSION", "DATABASE", "EVENT TRIGGER", "EXTENSION",
+ {"ACCESS METHOD", "CAST", "COLLATION", "CONVERSION", "DATABASE",
+ "EVENT TRIGGER", "EXTENSION",
"FOREIGN DATA WRAPPER", "FOREIGN TABLE",
"SERVER", "INDEX", "LANGUAGE", "POLICY", "RULE", "SCHEMA", "SEQUENCE",
"TABLE", "TYPE", "VIEW", "MATERIALIZED VIEW", "COLUMN", "AGGREGATE", "FUNCTION",
@@ -1919,6 +1920,8 @@ psql_completion(const char *text, int start, int end)
COMPLETE_WITH_LIST(list_COMMENT);
}
+ else if (Matches4("COMMENT", "ON", "ACCESS", "METHOD"))
+ COMPLETE_WITH_QUERY(Query_for_list_of_access_methods);
else if (Matches3("COMMENT", "ON", "FOREIGN"))
COMPLETE_WITH_LIST2("DATA WRAPPER", "TABLE");
else if (Matches4("COMMENT", "ON", "TEXT", "SEARCH"))
@@ -2331,6 +2334,12 @@ psql_completion(const char *text, int start, int end)
else if (Matches5("DROP", "TRIGGER", MatchAny, "ON", MatchAny))
COMPLETE_WITH_LIST2("CASCADE", "RESTRICT");
+ /* DROP ACCESS METHOD */
+ else if (Matches2("DROP", "ACCESS"))
+ COMPLETE_WITH_CONST("METHOD");
+ else if (Matches3("DROP", "ACCESS", "METHOD"))
+ COMPLETE_WITH_QUERY(Query_for_list_of_access_methods);
+
/* DROP EVENT TRIGGER */
else if (Matches2("DROP", "EVENT"))
COMPLETE_WITH_CONST("TRIGGER");
@@ -2931,6 +2940,8 @@ psql_completion(const char *text, int start, int end)
}
else if (TailMatchesCS1("\\da*"))
COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_aggregates, NULL);
+ else if (TailMatchesCS1("\\dA*"))
+ COMPLETE_WITH_QUERY(Query_for_list_of_access_methods);
else if (TailMatchesCS1("\\db*"))
COMPLETE_WITH_QUERY(Query_for_list_of_tablespaces);
else if (TailMatchesCS1("\\dD*"))