This is the version of my "Pro PostgreSQL" talk given at OSCon 2007

1. Pro PostgreSQL Robert Treat omniti.com brighterlamp.org

4. C-0 Get Off To A Good Start

13. D-0 Let's Talk About Upgrades

14. D-1 Let's Talk About Upgrades Versioning First Digit ( 7 .4.16 -> 8 .2.0) Second Digit (8.2.4 -> 8.3.0) Third Digit (8.3.0 -> 8.3.1)

15. D-2 Let's Talk About Upgrades Versioning First Digit (7.4.16 -> 8.2.0) Second Digit (8. 2 .4 -> 8. 3 .0) Third Digit (8.3.0 -> 8.3.1)

16. D-3 Let's Talk About Upgrades Versioning First Digit (7.4.16 -> 8.2.0) Second Digit (8.2.4 -> 8.3.0) Third Digit (8.3. 0 -> 8.3. 1 )

22. E-0 Figure Your Configure

26. P-0 Routine Maintenance

30. G-0 Availability

40. I-0 Beyond Simple SQL

43. I-3 Beyond Simple SQL rownum()

44. I-4 Beyond Simple SQL row numbering

45. I-5 Beyond Simple SQL row numbering pagila=# select (select count(*)+1 from customer where customer_id < x.customer_id) as rownum, customer_id, first_name, last_name from customer x limit 5; rownum | customer_id | first_name | last_name --------+-------------+------------+----------- 1 | 1 | MARY | SMITH 2 | 3 | LINDA | WILLIAMS 3 | 4 | BARBARA | JONES 4 | 5 | ELIZABETH | BROWN 5 | 6 | JENNIFER | DAVIS (5 rows)

46. I-6 Beyond Simple SQL row numbering pagila=# select (select count(*)+1 from customer where customer_id < x.customer_id) as rownum, customer_id, first_name, last_name from customer x limit 5; rownum | customer_id | first_name | last_name --------+-------------+------------+----------- 1 | 1 | MARY | SMITH 2 | 3 | LINDA | WILLIAMS 3 | 4 | BARBARA | JONES 4 | 5 | ELIZABETH | BROWN 5 | 6 | JENNIFER | DAVIS (5 rows)

49. I-9 Beyond Simple SQL rollup() pagila=# select customer_id, amount from payment limit 10; customer_id | amount -------------+-------- 267 | 7.98 267 | 0.00 269 | 3.98 269 | 0.00 274 | 0.99 279 | 4.99 282 | 0.99 284 | 5.98 284 | 0.00 287 | 0.99 (10 rows)

51. I-11 Beyond Simple SQL rank() SELECT * FROM (select c1.first_name, c1.last_name, c1.store_id, p1.total, (select 1 + count(*) from customer c2 join (select customer_id, sum(amount) as total from only payment group by customer_id) p2 using (customer_id) where c2.store_id = c1.store_id and p2.total > p1.total) as rank from customer c1 join (select customer_id, sum(amount) as total from only payment group by customer_id) p1 using (customer_id) ) x WHERE x.rank <= 3 ORDER BY x.store_id, x.rank; first_name | last_name | store_id | total | rank ------------+-----------+----------+--------+------ ELEANOR | HUNT | 1 | 216.54 | 1 CLARA | SHAW | 1 | 195.58 | 2 TOMMY | COLLAZO | 1 | 186.62 | 3 KARL | SEAL | 2 | 221.55 | 1 MARION | SNYDER | 2 | 194.61 | 2 RHONDA | KENNEDY | 2 | 194.61 | 2 (6 rows)

52. I-12 Beyond Simple SQL SELECT * FROM (SELECT c1.first_name, c1.last_name, c1.store_id, p1.total, (SELECT 1 + count(*) FROM customer c2 JOIN (SELECT customer_id, sum(amount) AS total FROM payment GROUP BY customer_id) p2 USING (customer_id) WHERE c2.store_id = c1.store_id AND p2.total > p1.total ) AS rank FROM customer c1 JOIN (SELECT customer_id, sum(amount) AS total FROM payment GROUP BY customer_id) p1 USING (customer_id) ) x WHERE x.rank <= 3 ORDER BY x.store_id, x.rank;

53. I-13 Beyond Simple SQL SELECT * FROM (SELECT c1.first_name, c1.last_name, c1.store_id, p1.total, (SELECT 1 + count(*) FROM customer c2 JOIN (SELECT customer_id, sum(amount) AS total FROM payment GROUP BY customer_id) p2 USING (customer_id) WHERE c2.store_id = c1.store_id AND p2.total > p1.total ) AS rank FROM customer c1 JOIN (SELECT customer_id, sum(amount) AS total FROM payment GROUP BY customer_id) p1 USING (customer_id) ) x WHERE x.rank <= 3 ORDER BY x.store_id, x.rank;

54. I-14 Beyond Simple SQL SELECT * FROM (SELECT c1.first_name, c1.last_name, c1.store_id, p1.total, (SELECT 1 + count(*) FROM customer c2 JOIN (SELECT customer_id, sum(amount) AS total FROM payment GROUP BY customer_id) p2 USING (customer_id) WHERE c2.store_id = c1.store_id AND p2.total > p1.total ) AS rank FROM customer c1 JOIN (SELECT customer_id, sum(amount) AS total FROM payment GROUP BY customer_id) p1 USING (customer_id) ) x WHERE x.rank <= 3 ORDER BY x.store_id, x.rank;

55. I-15 Beyond Simple SQL SELECT * FROM (SELECT c1.first_name, c1.last_name, c1.store_id, p1.total, (SELECT 1 + count(*) FROM customer c2 JOIN (SELECT customer_id, sum(amount) AS total FROM payment GROUP BY customer_id) p2 USING (customer_id) WHERE c2.store_id = c1.store_id AND p2.total > p1.total ) AS rank FROM customer c1 JOIN (SELECT customer_id, sum(amount) AS total FROM payment GROUP BY customer_id) p1 USING (customer_id) ) x WHERE x.rank <= 3 ORDER BY x.store_id, x.rank;

56. I-16 Beyond Simple SQL SELECT * FROM (SELECT c1.first_name, c1.last_name, c1.store_id, p1.total, (SELECT 1 + count(*) FROM customer c2 JOIN (SELECT customer_id, sum(amount) AS total FROM payment GROUP BY customer_id) p2 USING (customer_id) WHERE c2.store_id = c1.store_id AND p2.total > p1.total ) AS rank FROM customer c1 JOIN (SELECT customer_id, sum(amount) AS total FROM payment GROUP BY customer_id) p1 USING (customer_id) ) x WHERE x.rank <= 3 ORDER BY x.store_id, x.rank;

57. J-0 Query Your Queries

60. J-3 Query Your Queries finding slow queries: pg_stat_all_tables pagila=# pg_stat_all_tables View &quot;pg_catalog.pg_stat_all_tables&quot; Column | Type | ----------------+-------------------------- relid | oid | schemaname | name | relname | name | seq_scan | bigint | seq_tup_read | bigint | idx_scan | bigint | idx_tup_fetch | bigint | n_tup_ins | bigint | n_tup_upd | bigint | n_tup_del | bigint |

61. J-4 Query Your Queries finding slow queries: pg_stat_all_tables pagila=# pg_stat_all_tables View &quot;pg_catalog.pg_stat_all_tables&quot; Column | Type | ----------------+-------------------------- relid | oid | schemaname | name | relname | name | seq_scan | bigint | seq_tup_read | bigint | idx_scan | bigint | idx_tup_fetch | bigint | n_tup_ins | bigint | n_tup_upd | bigint | n_tup_del | bigint |

62. J-5 Query Your Queries finding slow queries: pg_stat_all_tables pagila=# pg_stat_all_tables View &quot;pg_catalog.pg_stat_all_tables&quot; Column | Type | ----------------+-------------------------- relid | oid | schemaname | name | relname | name | seq_scan | bigint | seq_tup_read | bigint | idx_scan | bigint | idx_tup_fetch | bigint | n_tup_ins | bigint | n_tup_upd | bigint | n_tup_del | bigint |

63. J-6 Query Your Queries finding slow queries: pg_stat_all_tables pagila=# pg_stat_all_tables View &quot;pg_catalog.pg_stat_all_tables&quot; Column | Type | ----------------+-------------------------- relid | oid | schemaname | name | relname | name | seq_scan | bigint | seq_tup_read | bigint | idx_scan | bigint | idx_tup_fetch | bigint | n_tup_ins | bigint | n_tup_upd | bigint | n_tup_del | bigint |

64. J-7 Query Your Queries finding slow queries: pg_stat_all_indexes pagila=# pg_stat_all_indexes View &quot;pg_catalog.pg_stat_all_indexes&quot; Column | Type | ---------------+--------+ relid | oid | indexrelid | oid | schemaname | name | relname | name | indexrelname | name | idx_scan | bigint | idx_tup_read | bigint | idx_tup_fetch | bigint |

65. J-8 Query Your Queries finding slow queries: pg_stat_all_indexes pagila=# pg_stat_all_indexes View &quot;pg_catalog.pg_stat_all_indexes&quot; Column | Type | ---------------+--------+ relid | oid | indexrelid | oid | schemaname | name | relname | name | indexrelname | name | idx_scan | bigint | idx_tup_read | bigint | idx_tup_fetch | bigint |

66. J-9 Query Your Queries finding slow queries: pg_statio_all_tables pagila=# pg_statio_all_tables View &quot;pg_catalog.pg_statio_all_tables&quot; Column | Type | -----------------+--------+ relid | oid | schemaname | name | relname | name | heap_blks_read | bigint | heap_blks_hit | bigint | idx_blks_read | bigint | idx_blks_hit | bigint | toast_blks_read | bigint | toast_blks_hit | bigint | tidx_blks_read | bigint | tidx_blks_hit | bigint |

67. J-9 Query Your Queries finding slow queries: pg_statio_all_tables pagila=# pg_statio_all_tables View &quot;pg_catalog.pg_statio_all_tables&quot; Column | Type | -----------------+--------+ relid | oid | schemaname | name | relname | name | heap_blks_read | bigint | heap_blks_hit | bigint | idx_blks_read | bigint | idx_blks_hit | bigint | toast_blks_read | bigint | toast_blks_hit | bigint | tidx_blks_read | bigint | tidx_blks_hit | bigint |

70. L-0 Indexing Options

78. N-0 PostgreSQL Tablespaces

81. Q-0 PostgreSQL Partitioning

85. K-0 Other Stuff I Should Mention

94. K-7 Other Stuff I Should Mention ;-) my book?

96. X-0 El Fin