The document discusses PostgreSQL's support for accessing remote data sources through SQL/MED. It describes how PostgreSQL has evolved from only supporting reads of remote data in early versions to supporting writes in version 9.3 by introducing foreign data wrappers. These wrappers allow PostgreSQL to access a variety of data sources like Oracle, MySQL, NoSQL databases, and file systems. The document envisions continued improvements to introspection of remote schemas and full compliance with the SQL/MED standard.

1. Intergalactic Dataspeak
Highload++ 2013/10/28
Copyright© 2013
David Fetter david.fetter@disqus.com
All rights reserved.

2. SQL
Everywhere!

5. Virtual
Table Interface

6. Virtual
Index Interface

7. SQL/MED

8. <DIGRESSION>

9. EXTENSIONS!

10. </DIGRESSION>

11. <PAST>

12. SQL/MED in PostgreSQL
contrib/dblink

13. SQL/MED in PostgreSQL
DBI-Link

14. Time Passes...

15. PostgreSQL 8.4

16. Infrastructure Only

17. PostgreSQL 9.0

18. More Infrastructure

19. PostgreSQL 9.2

20. Reads
ANALYZE

21. </PAST>

22. <PRESENT>

23. A Disqus Hour
•
•
•
•
50 GB raw log data
30 GB event data
100 million embed loads
...last week.

24. PostgreSQL 9.3

25. WRITES!

26. Wrappers. Lots of Wrappers.

27. <SQL>

28. Oracle

29. MySQL

30. ODBC

31. </SQL>

32. <NoSQL>

33. CouchDB

34. Redis

35. </NoSQL>

36. <File>

37. file

38. file_text_array

39. </File>

40. <Creativity>

41. Twitter

42. LDAP

43. S3

44. </Creativity>

45. More!

46. PGXN

47. Multicorn

48. <New_Commands>

49. {CREATE | ALTER | DROP}
FOREIGN DATA WRAPPER

50. {CREATE | ALTER | DROP}
SERVER

51. {CREATE | ALTER | DROP}
USER MAPPING

52. </New_Commands>

53. <INTROSPECTION>

54. Remote Partitioning
• Expose information_schema.columns.
• Create view over them.
• Create foreign table generator.

55. </INTROSPECTION>

56. </PRESENT>

57. <FUTURE>

58. <INTROSPECTION>

59. CREATE FOREIGN
TABLE (…LIKE...)

60. More and better.

61. </INTROSPECTION>

62. Full SQL/MED
Compliance

63. The ever-interesting:
Stuff I Never Thought Of

64. </FUTURE>

65. Большое
спасибо!
Highload++ 2013/10/28
Copyright© 2013
David Fetter david.fetter@disqus.com
All rights reserved.