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Add a materialized view relations.

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A materialized view has a rule just like a view and a heap and
other physical properties like a table.  The rule is only used to
populate the table, references in queries refer to the
materialized data.

This is a minimal implementation, but should still be useful in
many cases.  Currently data is only populated "on demand" by the
CREATE MATERIALIZED VIEW and REFRESH MATERIALIZED VIEW statements.
It is expected that future releases will add incremental updates
with various timings, and that a more refined concept of defining
what is "fresh" data will be developed.  At some point it may even
be possible to have queries use a materialized in place of
references to underlying tables, but that requires the other
above-mentioned features to be working first.

Much of the documentation work by Robert Haas.
Review by Noah Misch, Thom Brown, Robert Haas, Marko Tiikkaja
Security review by KaiGai Kohei, with a decision on how best to
implement sepgsql still pending.
This commit is contained in:
Kevin Grittner
2013-03-03 18:23:31 -06:00
parent b15a6da292
commit 3bf3ab8c56
103 changed files with 4238 additions and 436 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
contrib/oid2name/oid2name.c
View File

@@ -444,7 +444,7 @@ sql_exec_dumpalltables(PGconn *conn, struct options * opts)
" LEFT JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace "
" LEFT JOIN pg_catalog.pg_database d ON d.datname = pg_catalog.current_database(),"
" pg_catalog.pg_tablespace t "
"WHERE relkind IN ('r'%s%s) AND "
"WHERE relkind IN ('r', 'm'%s%s) AND "
" %s"
" t.oid = CASE"
" WHEN reltablespace <> 0 THEN reltablespace"
@@ -515,7 +515,7 @@ sql_exec_searchtables(PGconn *conn, struct options * opts)
" LEFT JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace \n"
" LEFT JOIN pg_catalog.pg_database d ON d.datname = pg_catalog.current_database(),\n"
" pg_catalog.pg_tablespace t \n"
"WHERE relkind IN ('r', 'i', 'S', 't') AND \n"
"WHERE relkind IN ('r', 'm', 'i', 'S', 't') AND \n"
" t.oid = CASE\n"
" WHEN reltablespace <> 0 THEN reltablespace\n"
" ELSE dattablespace\n"

2
contrib/pg_upgrade/info.c
View File

@@ -282,7 +282,7 @@ get_rel_infos(ClusterInfo *cluster, DbInfo *dbinfo)
"CREATE TEMPORARY TABLE info_rels (reloid) AS SELECT c.oid "
"FROM pg_catalog.pg_class c JOIN pg_catalog.pg_namespace n "
" ON c.relnamespace = n.oid "
"WHERE relkind IN ('r', 'i'%s) AND "
"WHERE relkind IN ('r', 'm', 'i'%s) AND "
/* exclude possible orphaned temp tables */
" ((n.nspname !~ '^pg_temp_' AND "
" n.nspname !~ '^pg_toast_temp_' AND "

4
contrib/pg_upgrade/pg_upgrade.c
View File

@@ -525,8 +525,8 @@ set_frozenxids(void)
PQclear(executeQueryOrDie(conn,
"UPDATE pg_catalog.pg_class "
"SET relfrozenxid = '%u' "
/* only heap and TOAST are vacuumed */
"WHERE relkind IN ('r', 't')",
/* only heap, materialized view, and TOAST are vacuumed */
"WHERE relkind IN ('r', 'm', 't')",
old_cluster.controldata.chkpnt_nxtxid));
PQfinish(conn);

3
contrib/pg_upgrade/version_old_8_3.c
View File

@@ -145,6 +145,7 @@ old_8_3_check_for_tsquery_usage(ClusterInfo *cluster)
"FROM pg_catalog.pg_class c, "
" pg_catalog.pg_namespace n, "
" pg_catalog.pg_attribute a "
/* materialized views didn't exist in 8.3, so no need to check 'm' */
"WHERE c.relkind = 'r' AND "
" c.oid = a.attrelid AND "
" NOT a.attisdropped AND "
@@ -323,6 +324,7 @@ old_8_3_rebuild_tsvector_tables(ClusterInfo *cluster, bool check_mode)
"FROM pg_catalog.pg_class c, "
" pg_catalog.pg_namespace n, "
" pg_catalog.pg_attribute a "
/* materialized views didn't exist in 8.3, so no need to check 'm' */
"WHERE c.relkind = 'r' AND "
" c.oid = a.attrelid AND "
" NOT a.attisdropped AND "
@@ -343,6 +345,7 @@ old_8_3_rebuild_tsvector_tables(ClusterInfo *cluster, bool check_mode)
"FROM pg_catalog.pg_class c, " \
" pg_catalog.pg_namespace n, " \
" pg_catalog.pg_attribute a " \
/* materialized views didn't exist in 8.3, so no need to check 'm' */ \
"WHERE c.relkind = 'r' AND " \
" c.oid = a.attrelid AND " \
" NOT a.attisdropped AND " \

1
contrib/pgstattuple/pgstattuple.c
View File

@@ -216,6 +216,7 @@ pgstat_relation(Relation rel, FunctionCallInfo fcinfo)
switch (rel->rd_rel->relkind)
{
case RELKIND_RELATION:
case RELKIND_MATVIEW:
case RELKIND_TOASTVALUE:
case RELKIND_SEQUENCE:
return pgstat_heap(rel, fcinfo);

2
contrib/vacuumlo/vacuumlo.c
View File

@@ -209,7 +209,7 @@ vacuumlo(const char *database, const struct _param * param)
strcat(buf, " AND a.atttypid = t.oid ");
strcat(buf, " AND c.relnamespace = s.oid ");
strcat(buf, " AND t.typname in ('oid', 'lo') ");
strcat(buf, " AND c.relkind = 'r'");
strcat(buf, " AND c.relkind in ('r', 'm')");
strcat(buf, " AND s.nspname !~ '^pg_'");
res = PQexec(conn, buf);
if (PQresultStatus(res) != PGRES_TUPLES_OK)