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0a469c8769
VACUUM FULL INPLACE), along with a boatload of subsidiary code and complexity. Per discussion, the use case for this method of vacuuming is no longer large enough to justify maintaining it; not to mention that we don't wish to invest the work that would be needed to make it play nicely with Hot Standby. Aside from the code directly related to old-style VACUUM FULL, this commit removes support for certain WAL record types that could only be generated within VACUUM FULL, redirect-pointer removal in heap_page_prune, and nontransactional generation of cache invalidation sinval messages (the last being the sticking point for Hot Standby). We still have to retain all code that copes with finding HEAP_MOVED_OFF and HEAP_MOVED_IN flag bits on existing tuples. This can't be removed as long as we want to support in-place update from pre-9.0 databases.
73 lines
1.8 KiB
Plaintext
73 lines
1.8 KiB
Plaintext
--
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-- VACUUM
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--
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CREATE TABLE vactst (i INT);
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INSERT INTO vactst VALUES (1);
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INSERT INTO vactst SELECT * FROM vactst;
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INSERT INTO vactst SELECT * FROM vactst;
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INSERT INTO vactst SELECT * FROM vactst;
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INSERT INTO vactst SELECT * FROM vactst;
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INSERT INTO vactst SELECT * FROM vactst;
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INSERT INTO vactst SELECT * FROM vactst;
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INSERT INTO vactst SELECT * FROM vactst;
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INSERT INTO vactst SELECT * FROM vactst;
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INSERT INTO vactst SELECT * FROM vactst;
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INSERT INTO vactst SELECT * FROM vactst;
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INSERT INTO vactst SELECT * FROM vactst;
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INSERT INTO vactst VALUES (0);
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SELECT count(*) FROM vactst;
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count
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-------
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2049
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(1 row)
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DELETE FROM vactst WHERE i != 0;
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SELECT * FROM vactst;
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i
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---
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0
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(1 row)
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VACUUM FULL vactst;
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UPDATE vactst SET i = i + 1;
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INSERT INTO vactst SELECT * FROM vactst;
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INSERT INTO vactst SELECT * FROM vactst;
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INSERT INTO vactst SELECT * FROM vactst;
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INSERT INTO vactst SELECT * FROM vactst;
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INSERT INTO vactst SELECT * FROM vactst;
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INSERT INTO vactst SELECT * FROM vactst;
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INSERT INTO vactst SELECT * FROM vactst;
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INSERT INTO vactst SELECT * FROM vactst;
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INSERT INTO vactst SELECT * FROM vactst;
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INSERT INTO vactst SELECT * FROM vactst;
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INSERT INTO vactst SELECT * FROM vactst;
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INSERT INTO vactst VALUES (0);
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SELECT count(*) FROM vactst;
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count
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-------
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2049
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(1 row)
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DELETE FROM vactst WHERE i != 0;
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VACUUM (FULL) vactst;
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DELETE FROM vactst;
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SELECT * FROM vactst;
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i
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---
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(0 rows)
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VACUUM (FULL, FREEZE) vactst;
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VACUUM (ANALYZE, FULL) vactst;
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CREATE TABLE vaccluster (i INT PRIMARY KEY);
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NOTICE: CREATE TABLE / PRIMARY KEY will create implicit index "vaccluster_pkey" for table "vaccluster"
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ALTER TABLE vaccluster CLUSTER ON vaccluster_pkey;
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INSERT INTO vaccluster SELECT * FROM vactst;
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CLUSTER vaccluster;
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VACUUM FULL pg_am;
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VACUUM FULL pg_class;
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VACUUM FULL pg_database;
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VACUUM FULL vaccluster;
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VACUUM FULL vactst;
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DROP TABLE vaccluster;
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DROP TABLE vactst;
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