mirror of https://github.com/postgres/postgres
parent
dcbacde2e3
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1430271e99
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-- |
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-- WITHOUT OID |
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-- |
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CREATE TABLE wi (i INT); |
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CREATE TABLE wo (i INT) WITHOUT OIDS; |
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INSERT INTO wi VALUES (1); -- 1 |
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INSERT INTO wo SELECT i FROM wi; -- 1 |
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INSERT INTO wo SELECT i+1 FROM wi; -- 1+1=2 |
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INSERT INTO wi SELECT i+1 FROM wo; -- 1+2=3 |
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INSERT INTO wi SELECT i+3 FROM wi; -- 3+3=6 |
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INSERT INTO wo SELECT i+2 FROM wi; -- 2+6=8 |
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INSERT INTO wo SELECT i+8 FROM wo; -- 8+8=16 |
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INSERT INTO wi SELECT i+6 FROM wo; -- 6+16=22 |
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INSERT INTO wi SELECT i+22 FROM wi; -- 22+22=44 |
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INSERT INTO wo SELECT i+16 FROM wi; -- 16+44=60 |
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INSERT INTO wo SELECT i+60 FROM wo; -- 60+60=120 |
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INSERT INTO wi SELECT i+44 FROM wo; -- 44+120=164 |
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INSERT INTO wi SELECT i+164 FROM wi; -- 164+164=328 |
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INSERT INTO wo SELECT i+120 FROM wi; -- 120+328=448 |
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INSERT INTO wo SELECT i+448 FROM wo; -- 448+448=896 |
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INSERT INTO wi SELECT i+328 FROM wo; -- 328+896=1224 |
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INSERT INTO wi SELECT i+1224 FROM wi; -- 1224+1224=2448 |
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INSERT INTO wo SELECT i+896 FROM wi; -- 896+2448=3344 |
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INSERT INTO wo SELECT i+3344 FROM wo; -- 3344+3344=6688 |
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INSERT INTO wi SELECT i+2448 FROM wo; -- 2448+6688=9136 |
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INSERT INTO wo SELECT i+6688 FROM wi WHERE i<=2448; -- 6688+2448=9136 |
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VACUUM ANALYZE wi; |
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VACUUM ANALYZE wo; |
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SELECT min(relpages) < max(relpages), min(reltuples) - max(reltuples) |
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FROM pg_class |
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WHERE relname IN ('wi', 'wo'); |
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?column? | ?column? |
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----------+---------- |
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t | 0 |
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(1 row) |
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DROP TABLE wi; |
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DROP TABLE wo; |
@ -0,0 +1,35 @@ |
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-- |
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-- WITHOUT OID |
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-- |
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CREATE TABLE wi (i INT); |
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CREATE TABLE wo (i INT) WITHOUT OIDS; |
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INSERT INTO wi VALUES (1); -- 1 |
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INSERT INTO wo SELECT i FROM wi; -- 1 |
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INSERT INTO wo SELECT i+1 FROM wi; -- 1+1=2 |
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INSERT INTO wi SELECT i+1 FROM wo; -- 1+2=3 |
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INSERT INTO wi SELECT i+3 FROM wi; -- 3+3=6 |
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INSERT INTO wo SELECT i+2 FROM wi; -- 2+6=8 |
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INSERT INTO wo SELECT i+8 FROM wo; -- 8+8=16 |
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INSERT INTO wi SELECT i+6 FROM wo; -- 6+16=22 |
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INSERT INTO wi SELECT i+22 FROM wi; -- 22+22=44 |
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INSERT INTO wo SELECT i+16 FROM wi; -- 16+44=60 |
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INSERT INTO wo SELECT i+60 FROM wo; -- 60+60=120 |
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INSERT INTO wi SELECT i+44 FROM wo; -- 44+120=164 |
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INSERT INTO wi SELECT i+164 FROM wi; -- 164+164=328 |
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INSERT INTO wo SELECT i+120 FROM wi; -- 120+328=448 |
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INSERT INTO wo SELECT i+448 FROM wo; -- 448+448=896 |
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INSERT INTO wi SELECT i+328 FROM wo; -- 328+896=1224 |
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INSERT INTO wi SELECT i+1224 FROM wi; -- 1224+1224=2448 |
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INSERT INTO wo SELECT i+896 FROM wi; -- 896+2448=3344 |
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INSERT INTO wo SELECT i+3344 FROM wo; -- 3344+3344=6688 |
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INSERT INTO wi SELECT i+2448 FROM wo; -- 2448+6688=9136 |
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INSERT INTO wo SELECT i+6688 FROM wi WHERE i<=2448; -- 6688+2448=9136 |
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VACUUM ANALYZE wi; |
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VACUUM ANALYZE wo; |
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SELECT min(relpages) < max(relpages), min(reltuples) - max(reltuples) |
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FROM pg_class |
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WHERE relname IN ('wi', 'wo'); |
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DROP TABLE wi; |
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DROP TABLE wo; |
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