</sect2>
+ <sect2 id="functions-data-sanity">
+ <title>Data Sanity Functions</title>
+
+ <para>
+ The functions shown in <xref linkend="functions-data-sanity-table"/>
+ provide ways to check the sanity of data files in the cluster.
+ </para>
+
+ <table id="functions-data-sanity-table">
+ <title>Data Sanity Functions</title>
+ <tgroup cols="3">
+ <thead>
+ <row><entry>Name</entry> <entry>Return Type</entry> <entry>Description</entry>
+ </row>
+ </thead>
+
+ <tbody>
+ <row>
+ <entry>
+ <literal><function>pg_relation_check_pages(<parameter>relation</parameter> <type>regclass</type> [, <parameter>fork</parameter> <type>text</type> <literal>DEFAULT</literal> <literal>NULL</literal> ])</function></literal>
+ </entry>
+ <entry><type>setof record</type></entry>
+ <entry>Check the pages of a relation.
+ </entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <indexterm>
+ <primary>pg_relation_check_pages</primary>
+ </indexterm>
+ <para id="functions-check-relation-note" xreflabel="pg_relation_check_pages">
+ <function>pg_relation_check_pages</function> iterates over all blocks of a
+ given relation and verifies if they are in a state where they can safely
+ be loaded into the shared buffers. If defined,
+ <replaceable>fork</replaceable> specifies that only the pages of the given
+ fork are to be verified. Fork can be <literal>'main'</literal> for the
+ main data fork, <literal>'fsm'</literal> for the free space map,
+ <literal>'vm'</literal> for the visibility map, or
+ <literal>'init'</literal> for the initialization fork. The default of
+ <literal>NULL</literal> means that all the forks of the relation are
+ checked. The function returns a list of blocks that are considered as
+ corrupted with the path of the related file. Use of this function is
+ restricted to superusers by default but access may be granted to others
+ using <command>GRANT</command>.
+ </para>
+
+ </sect2>
+
</sect1>
<sect1 id="functions-trigger">
STRICT VOLATILE
AS 'pg_create_logical_replication_slot';
+CREATE OR REPLACE FUNCTION pg_relation_check_pages(
+ IN relation regclass, IN fork text DEFAULT NULL,
+ OUT path text, OUT failed_block_num bigint)
+RETURNS SETOF record
+LANGUAGE internal
+VOLATILE PARALLEL RESTRICTED
+AS 'pg_relation_check_pages';
+
CREATE OR REPLACE FUNCTION
make_interval(years int4 DEFAULT 0, months int4 DEFAULT 0, weeks int4 DEFAULT 0,
days int4 DEFAULT 0, hours int4 DEFAULT 0, mins int4 DEFAULT 0,
-- can later change who can access these functions, or leave them as only
-- available to superuser / cluster owner, if they choose.
--
+REVOKE EXECUTE ON FUNCTION pg_relation_check_pages(regclass, text) FROM public;
REVOKE EXECUTE ON FUNCTION pg_start_backup(text, boolean, boolean) FROM public;
REVOKE EXECUTE ON FUNCTION pg_stop_backup() FROM public;
REVOKE EXECUTE ON FUNCTION pg_stop_backup(boolean, boolean) FROM public;
oid.o \
oracle_compat.o \
orderedsetaggs.o \
+ pagefuncs.o \
partitionfuncs.o \
pg_locale.o \
pg_lsn.o \
--- /dev/null
+/*-------------------------------------------------------------------------
+ *
+ * pagefuncs.c
+ * Functions for features related to relation pages.
+ *
+ * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ *
+ * IDENTIFICATION
+ * src/backend/utils/adt/pagefuncs.c
+ *
+ *-------------------------------------------------------------------------
+ */
+
+#include "postgres.h"
+
+#include "access/relation.h"
+#include "funcapi.h"
+#include "miscadmin.h"
+#include "storage/bufmgr.h"
+#include "storage/lmgr.h"
+#include "storage/smgr.h"
+#include "utils/builtins.h"
+#include "utils/syscache.h"
+
+static void check_one_relation(TupleDesc tupdesc, Tuplestorestate *tupstore,
+ Oid relid, ForkNumber single_forknum);
+static void check_relation_fork(TupleDesc tupdesc, Tuplestorestate *tupstore,
+ Relation relation, ForkNumber forknum);
+
+/*
+ * callback arguments for check_pages_error_callback()
+ */
+typedef struct CheckPagesErrorInfo
+{
+ char *path;
+ BlockNumber blkno;
+} CheckPagesErrorInfo;
+
+/*
+ * Error callback specific to check_relation_fork().
+ */
+static void
+check_pages_error_callback(void *arg)
+{
+ CheckPagesErrorInfo *errinfo = (CheckPagesErrorInfo *) arg;
+
+ errcontext("while checking page %u of path %s",
+ errinfo->blkno, errinfo->path);
+}
+
+/*
+ * pg_relation_check_pages
+ *
+ * Check the state of all the pages for one or more fork types in the given
+ * relation.
+ */
+Datum
+pg_relation_check_pages(PG_FUNCTION_ARGS)
+{
+ Oid relid;
+ ReturnSetInfo *rsinfo = (ReturnSetInfo *) fcinfo->resultinfo;
+ TupleDesc tupdesc;
+ Tuplestorestate *tupstore;
+ MemoryContext per_query_ctx;
+ MemoryContext oldcontext;
+ ForkNumber forknum;
+
+ /* Switch into long-lived context to construct returned data structures */
+ per_query_ctx = rsinfo->econtext->ecxt_per_query_memory;
+ oldcontext = MemoryContextSwitchTo(per_query_ctx);
+
+ /* Build a tuple descriptor for our result type */
+ if (get_call_result_type(fcinfo, NULL, &tupdesc) != TYPEFUNC_COMPOSITE)
+ elog(ERROR, "return type must be a row type");
+
+ tupstore = tuplestore_begin_heap(true, false, work_mem);
+ rsinfo->returnMode = SFRM_Materialize;
+ rsinfo->setResult = tupstore;
+ rsinfo->setDesc = tupdesc;
+
+ MemoryContextSwitchTo(oldcontext);
+
+ /* handle arguments */
+ if (PG_ARGISNULL(0))
+ {
+ /* Just leave if nothing is defined */
+ PG_RETURN_VOID();
+ }
+
+ /* By default all the forks of a relation are checked */
+ if (PG_ARGISNULL(1))
+ forknum = InvalidForkNumber;
+ else
+ {
+ const char *forkname = TextDatumGetCString(PG_GETARG_TEXT_PP(1));
+
+ forknum = forkname_to_number(forkname);
+ }
+
+ relid = PG_GETARG_OID(0);
+
+ check_one_relation(tupdesc, tupstore, relid, forknum);
+ tuplestore_donestoring(tupstore);
+
+ return (Datum) 0;
+}
+
+/*
+ * Perform the check on a single relation, possibly filtered with a single
+ * fork. This function will check if the given relation exists or not, as
+ * a relation could be dropped after checking for the list of relations and
+ * before getting here, and we don't want to error out in this case.
+ */
+static void
+check_one_relation(TupleDesc tupdesc, Tuplestorestate *tupstore,
+ Oid relid, ForkNumber single_forknum)
+{
+ Relation relation;
+ ForkNumber forknum;
+
+ /* Check if relation exists. leaving if there is no such relation */
+ if (!SearchSysCacheExists1(RELOID, ObjectIdGetDatum(relid)))
+ return;
+
+ relation = relation_open(relid, AccessShareLock);
+
+ /*
+ * Sanity checks, returning no results if not supported. Temporary
+ * relations and relations without storage are out of scope.
+ */
+ if (!RELKIND_HAS_STORAGE(relation->rd_rel->relkind) ||
+ relation->rd_rel->relpersistence == RELPERSISTENCE_TEMP)
+ {
+ relation_close(relation, AccessShareLock);
+ return;
+ }
+
+ RelationOpenSmgr(relation);
+
+ for (forknum = 0; forknum <= MAX_FORKNUM; forknum++)
+ {
+ if (single_forknum != InvalidForkNumber && single_forknum != forknum)
+ continue;
+
+ if (smgrexists(relation->rd_smgr, forknum))
+ check_relation_fork(tupdesc, tupstore, relation, forknum);
+ }
+
+ relation_close(relation, AccessShareLock);
+}
+
+/*
+ * For a given relation and fork, do the real work of iterating over all pages
+ * and doing the check. Caller must hold an AccessShareLock lock on the given
+ * relation.
+ */
+static void
+check_relation_fork(TupleDesc tupdesc, Tuplestorestate *tupstore,
+ Relation relation, ForkNumber forknum)
+{
+ BlockNumber blkno,
+ nblocks;
+ SMgrRelation smgr = relation->rd_smgr;
+ char *path;
+ CheckPagesErrorInfo errinfo;
+ ErrorContextCallback errcallback;
+
+ /* Number of output arguments in the SRF */
+#define PG_CHECK_RELATION_COLS 2
+
+ Assert(CheckRelationLockedByMe(relation, AccessShareLock, true));
+
+ /*
+ * We remember the number of blocks here. Since caller must hold a lock
+ * on the relation, we know that it won't be truncated while we are
+ * iterating over the blocks. Any block added after this function started
+ * will not be checked.
+ */
+ nblocks = RelationGetNumberOfBlocksInFork(relation, forknum);
+
+ path = relpathbackend(smgr->smgr_rnode.node,
+ smgr->smgr_rnode.backend,
+ forknum);
+
+ /*
+ * Error context to print some information about blocks and relations
+ * impacted by corruptions.
+ */
+ errinfo.path = pstrdup(path);
+ errinfo.blkno = 0;
+ errcallback.callback = check_pages_error_callback;
+ errcallback.arg = (void *) &errinfo;
+ errcallback.previous = error_context_stack;
+ error_context_stack = &errcallback;
+
+ for (blkno = 0; blkno < nblocks; blkno++)
+ {
+ Datum values[PG_CHECK_RELATION_COLS];
+ bool nulls[PG_CHECK_RELATION_COLS];
+ int i = 0;
+
+ /* Update block number for the error context */
+ errinfo.blkno = blkno;
+
+ CHECK_FOR_INTERRUPTS();
+
+ /* Check the given buffer */
+ if (CheckBuffer(smgr, forknum, blkno))
+ continue;
+
+ memset(values, 0, sizeof(values));
+ memset(nulls, 0, sizeof(nulls));
+
+ values[i++] = CStringGetTextDatum(path);
+ values[i++] = UInt32GetDatum(blkno);
+
+ Assert(i == PG_CHECK_RELATION_COLS);
+
+ /* Save the corrupted blocks in the tuplestore. */
+ tuplestore_putvalues(tupstore, tupdesc, values, nulls);
+
+ pfree(path);
+ }
+
+ /* Pop the error context stack */
+ error_context_stack = errcallback.previous;
+}
*/
/* yyyymmddN */
-#define CATALOG_VERSION_NO 202010201
+#define CATALOG_VERSION_NO 202010281
#endif
proallargtypes => '{oid,text,int8,timestamptz}', proargmodes => '{i,o,o,o}',
proargnames => '{tablespace,name,size,modification}',
prosrc => 'pg_ls_tmpdir_1arg' },
+{ oid => '9147', descr => 'check pages of a relation',
+ proname => 'pg_relation_check_pages', procost => '10000', prorows => '20',
+ proisstrict => 'f', proretset => 't', provolatile => 'v', proparallel => 'r',
+ prorettype => 'record', proargtypes => 'regclass text',
+ proallargtypes => '{regclass,text,text,int8}', proargmodes => '{i,i,o,o}',
+ proargnames => '{relation,fork,path,failed_block_num}',
+ prosrc => 'pg_relation_check_pages' },
# hash partitioning constraint function
{ oid => '5028', descr => 'hash partition CHECK constraint',
--- /dev/null
+# Emulate on-disk corruptions of relation pages and find such corruptions
+# using pg_relation_check_pages().
+
+use strict;
+use warnings;
+
+use PostgresNode;
+use TestLib;
+use Test::More tests => 20;
+
+our $CHECKSUM_UINT16_OFFSET = 4;
+our $PD_UPPER_UINT16_OFFSET = 7;
+our $BLOCKSIZE;
+our $TOTAL_NB_ERR = 0;
+
+# Grab a relation page worth a size of BLOCKSIZE from given $filename.
+# $blkno is the same block number as for a relation file.
+sub read_page
+{
+ my ($filename, $blkno) = @_;
+ my $block;
+
+ open(my $infile, '<', $filename) or die;
+ binmode($infile);
+
+ my $success = read($infile, $block, $BLOCKSIZE, ($blkno * $BLOCKSIZE));
+ die($!) if !defined($success);
+
+ close($infile);
+
+ return ($block);
+}
+
+# Update an existing page of size BLOCKSIZE with new contents in given
+# $filename. $blkno is the block number assigned in the relation file.
+sub write_page
+{
+ my ($filename, $block, $blkno) = @_;
+
+ open(my $outfile, '>', $filename) or die;
+ binmode($outfile);
+
+ my $nb = syswrite($outfile, $block, $BLOCKSIZE, ($blkno * $BLOCKSIZE));
+
+ die($!) if not defined $nb;
+ die("Write error") if ($nb != $BLOCKSIZE);
+
+ $outfile->flush();
+
+ close($outfile);
+ return;
+}
+
+# Read 2 bytes from relation page at a given offset.
+sub get_uint16_from_page
+{
+ my ($block, $offset) = @_;
+
+ return (unpack("S*", $block))[$offset];
+}
+
+# Write 2 bytes to relation page at a given offset.
+sub set_uint16_to_page
+{
+ my ($block, $data, $offset) = @_;
+
+ my $pack = pack("S", $data);
+
+ # vec with 16B or more won't preserve endianness.
+ vec($block, 2 * $offset, 8) = (unpack('C*', $pack))[0];
+ vec($block, (2 * $offset) + 1, 8) = (unpack('C*', $pack))[1];
+
+ return $block;
+}
+
+# Sanity check on pg_stat_database looking after the number of checksum
+# failures.
+sub check_pg_stat_database
+{
+ my ($node, $test_prefix) = @_;
+
+ my $stdout = $node->safe_psql('postgres',
+ "SELECT "
+ . " sum(checksum_failures)"
+ . " FROM pg_catalog.pg_stat_database");
+ is($stdout, $TOTAL_NB_ERR,
+ "$test_prefix: pg_stat_database should have $TOTAL_NB_ERR error");
+
+ return;
+}
+
+# Run a round of page checks for any relation present in this test run.
+# $expected_broken is the psql output marking all the pages found as
+# corrupted using relname|blkno as format for each tuple returned. $nb
+# is the new number of checksum errors added to the global counter
+# matched with the contents of pg_stat_database.
+#
+# Note that this has no need to check system relations as these would have
+# no corruptions: this test does not manipulate them and should by no mean
+# break the cluster.
+sub run_page_checks
+{
+ my ($node, $num_checksum, $expected_broken, $test_prefix) = @_;
+
+ my $stdout = $node->safe_psql('postgres',
+ "SELECT relname, failed_block_num"
+ . " FROM (SELECT relname, (pg_catalog.pg_relation_check_pages(oid)).*"
+ . " FROM pg_class "
+ . " WHERE relkind in ('r','i', 'm') AND oid >= 16384) AS s");
+
+ # Check command result
+ is($stdout, $expected_broken,
+ "$test_prefix: output mismatch with pg_relation_check_pages()");
+
+ $TOTAL_NB_ERR += $num_checksum;
+ return;
+}
+
+# Perform various tests that modify a specified block at the given
+# offset, checking that a page corruption is correctly detected. The
+# original contents of the page are restored back once done.
+# $broken_pages is the set of pages that are expected to be broken
+# as of the returned result of pg_relation_check_pages(). $num_checksum
+# is the number of checksum failures expected to be added to the contents
+# of pg_stat_database after this function is done.
+sub corrupt_and_test_block
+{
+ my ($node, $filename, $blkno, $offset, $broken_pages, $num_checksum,
+ $test_prefix)
+ = @_;
+ my $fake_data = hex '0x0000';
+
+ # Stop the server cleanly to flush any pages, and to prevent any
+ # concurrent updates on what is going to be updated.
+ $node->stop;
+ my $original_block = read_page($filename, 0);
+ my $original_data = get_uint16_from_page($original_block, $offset);
+
+ isnt($original_data, $fake_data,
+ "$test_prefix: fake data at offset $offset should be different from the existing one"
+ );
+
+ my $new_block = set_uint16_to_page($original_block, $fake_data, $offset);
+ isnt(
+ $original_data,
+ get_uint16_from_page($new_block, $offset),
+ "$test_prefix: The data at offset $offset should have been changed in memory"
+ );
+
+ write_page($filename, $new_block, 0);
+
+ my $written_data = get_uint16_from_page(read_page($filename, 0), $offset);
+
+ # Some offline checks to validate that the corrupted data is in place.
+ isnt($original_data, $written_data,
+ "$test_prefix: data written at offset $offset should be different from the original one"
+ );
+ is( get_uint16_from_page($new_block, $offset),
+ $written_data,
+ "$test_prefix: data written at offset $offset should be the same as the one in memory"
+ );
+ is($written_data, $fake_data,
+ "$test_prefix: The data written at offset $offset should be the one we wanted to write"
+ );
+
+ # The corruption is in place, start the server to run the checks.
+ $node->start;
+ run_page_checks($node, $num_checksum, $broken_pages, $test_prefix);
+
+ # Stop the server, put the original page back in place.
+ $node->stop;
+
+ $new_block = set_uint16_to_page($original_block, $original_data, $offset);
+ is( $original_data,
+ get_uint16_from_page($new_block, $offset),
+ "$test_prefix: data at offset $offset should have been restored in memory"
+ );
+
+ write_page($filename, $new_block, 0);
+ is( $original_data,
+ get_uint16_from_page(read_page($filename, $blkno), $offset),
+ "$test_prefix: data at offset $offset should have been restored on disk"
+ );
+
+ # There should be no errors now that the contents are back in place.
+ $node->start;
+ run_page_checks($node, 0, '', $test_prefix);
+}
+
+# Data checksums are necessary for this test.
+my $node = get_new_node('main');
+$node->init(extra => ['--data-checksums']);
+$node->start;
+
+my $stdout =
+ $node->safe_psql('postgres', "SELECT" . " current_setting('block_size')");
+
+$BLOCKSIZE = $stdout;
+
+# Basic schema to corrupt and check
+$node->safe_psql(
+ 'postgres', q|
+ CREATE TABLE public.t1(id integer);
+ INSERT INTO public.t1 SELECT generate_series(1, 100);
+ CHECKPOINT;
+|);
+
+# Get the path to the relation file that will get manipulated by the
+# follow-up tests with some on-disk corruptions.
+$stdout = $node->safe_psql('postgres',
+ "SELECT"
+ . " current_setting('data_directory') || '/' || pg_relation_filepath('t1')"
+);
+
+my $filename = $stdout;
+
+# Normal case without corruptions, this passes, with pg_stat_database
+# reporting no errors.
+check_pg_stat_database($node, 'start');
+
+# Test with a modified checksum.
+corrupt_and_test_block($node, $filename, 0, $CHECKSUM_UINT16_OFFSET, 't1|0',
+ 1, 'broken checksum');
+
+# Test corruption making the block looking like it validates PageIsNew().
+corrupt_and_test_block($node, $filename, 0, $PD_UPPER_UINT16_OFFSET, 't1|0',
+ 0, 'new page');
+
+# Check that the number of errors in pg_stat_database match what we
+# expect with the corruptions previously introduced.
+check_pg_stat_database($node, 'end');
--- /dev/null
+--
+-- Tests for functions related to relation pages
+--
+-- Restricted to superusers by default
+CREATE ROLE regress_pgfunc_user;
+SET ROLE regress_pgfunc_user;
+SELECT pg_relation_check_pages('pg_class'); -- error
+ERROR: permission denied for function pg_relation_check_pages
+SELECT pg_relation_check_pages('pg_class', 'main'); -- error
+ERROR: permission denied for function pg_relation_check_pages
+RESET ROLE;
+DROP ROLE regress_pgfunc_user;
+-- NULL and simple sanity checks
+SELECT pg_relation_check_pages(NULL); -- empty result
+ pg_relation_check_pages
+-------------------------
+(0 rows)
+
+SELECT pg_relation_check_pages(NULL, NULL); -- empty result
+ pg_relation_check_pages
+-------------------------
+(0 rows)
+
+SELECT pg_relation_check_pages('pg_class', 'invalid_fork'); -- error
+ERROR: invalid fork name
+HINT: Valid fork names are "main", "fsm", "vm", and "init".
+-- Relation types that are supported
+CREATE TABLE pgfunc_test_tab (id int);
+CREATE INDEX pgfunc_test_ind ON pgfunc_test_tab(id);
+INSERT INTO pgfunc_test_tab VALUES (generate_series(1,1000));
+SELECT pg_relation_check_pages('pgfunc_test_tab');
+ pg_relation_check_pages
+-------------------------
+(0 rows)
+
+SELECT pg_relation_check_pages('pgfunc_test_ind');
+ pg_relation_check_pages
+-------------------------
+(0 rows)
+
+DROP TABLE pgfunc_test_tab;
+CREATE MATERIALIZED VIEW pgfunc_test_matview AS SELECT 1;
+SELECT pg_relation_check_pages('pgfunc_test_matview');
+ pg_relation_check_pages
+-------------------------
+(0 rows)
+
+DROP MATERIALIZED VIEW pgfunc_test_matview;
+CREATE SEQUENCE pgfunc_test_seq;
+SELECT pg_relation_check_pages('pgfunc_test_seq');
+ pg_relation_check_pages
+-------------------------
+(0 rows)
+
+DROP SEQUENCE pgfunc_test_seq;
+-- pg_relation_check_pages() returns no results if passed relations that
+-- do not support the operation, like relations without storage or temporary
+-- relations.
+CREATE TEMPORARY TABLE pgfunc_test_temp AS SELECT generate_series(1,10) AS a;
+SELECT pg_relation_check_pages('pgfunc_test_temp');
+ pg_relation_check_pages
+-------------------------
+(0 rows)
+
+DROP TABLE pgfunc_test_temp;
+CREATE VIEW pgfunc_test_view AS SELECT 1;
+SELECT pg_relation_check_pages('pgfunc_test_view');
+ pg_relation_check_pages
+-------------------------
+(0 rows)
+
+DROP VIEW pgfunc_test_view;
# ----------
# Another group of parallel tests
# ----------
-test: partition_join partition_prune reloptions hash_part indexing partition_aggregate partition_info tuplesort explain
+test: partition_join partition_prune reloptions hash_part indexing partition_aggregate partition_info tuplesort explain pagefuncs
# event triggers cannot run concurrently with any test that runs DDL
test: event_trigger
test: indexing
test: partition_aggregate
test: partition_info
+test: pagefuncs
test: tuplesort
test: explain
test: event_trigger
--- /dev/null
+--
+-- Tests for functions related to relation pages
+--
+
+-- Restricted to superusers by default
+CREATE ROLE regress_pgfunc_user;
+SET ROLE regress_pgfunc_user;
+SELECT pg_relation_check_pages('pg_class'); -- error
+SELECT pg_relation_check_pages('pg_class', 'main'); -- error
+RESET ROLE;
+DROP ROLE regress_pgfunc_user;
+
+-- NULL and simple sanity checks
+SELECT pg_relation_check_pages(NULL); -- empty result
+SELECT pg_relation_check_pages(NULL, NULL); -- empty result
+SELECT pg_relation_check_pages('pg_class', 'invalid_fork'); -- error
+
+-- Relation types that are supported
+CREATE TABLE pgfunc_test_tab (id int);
+CREATE INDEX pgfunc_test_ind ON pgfunc_test_tab(id);
+INSERT INTO pgfunc_test_tab VALUES (generate_series(1,1000));
+SELECT pg_relation_check_pages('pgfunc_test_tab');
+SELECT pg_relation_check_pages('pgfunc_test_ind');
+DROP TABLE pgfunc_test_tab;
+
+CREATE MATERIALIZED VIEW pgfunc_test_matview AS SELECT 1;
+SELECT pg_relation_check_pages('pgfunc_test_matview');
+DROP MATERIALIZED VIEW pgfunc_test_matview;
+CREATE SEQUENCE pgfunc_test_seq;
+SELECT pg_relation_check_pages('pgfunc_test_seq');
+DROP SEQUENCE pgfunc_test_seq;
+
+-- pg_relation_check_pages() returns no results if passed relations that
+-- do not support the operation, like relations without storage or temporary
+-- relations.
+CREATE TEMPORARY TABLE pgfunc_test_temp AS SELECT generate_series(1,10) AS a;
+SELECT pg_relation_check_pages('pgfunc_test_temp');
+DROP TABLE pgfunc_test_temp;
+CREATE VIEW pgfunc_test_view AS SELECT 1;
+SELECT pg_relation_check_pages('pgfunc_test_view');
+DROP VIEW pgfunc_test_view;
CatalogId
CatalogIndexState
ChangeVarNodes_context
+CheckPagesErrorInfo
CheckPoint
CheckPointStmt
CheckpointStatsData
projects / postgresql.git / commitdiff