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Viewing changes to userdb/migrations/20090225-01.sql

  • Committer: William Grant
  • Date: 2009-03-17 07:16:03 UTC
  • Revision ID: grantw@unimelb.edu.au-20090317071603-ux5qxbjkpdarvig3
Tags: 0.1.9.10
ivle.interpret.execute_raw() no longer breaks with lots of data.

Previously we uses subprocess' wait(), which doesn't empty the stdout
pipe. It filled up, causing the child to block. We now use communicate()
instead, which select()s and reads the pipes to unblock things.

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BEGIN;
 
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DROP TRIGGER deactivate_semester_enrolments ON semester;
 
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DROP FUNCTION deactivate_semester_enrolments_update();
 
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DROP TRIGGER confirm_active_semester ON enrolment;
 
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DROP FUNCTION confirm_active_semester_insertupdate();
 
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ALTER TABLE semester ADD COLUMN state TEXT NOT NULL DEFAULT 'current';
 
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ALTER TABLE semester ADD CONSTRAINT semester_state_check CHECK (state IN ('disabled', 'past', 'current', 'future'));
 
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UPDATE semester SET state='past' WHERE active='false';
 
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ALTER TABLE semester DROP COLUMN active;
 
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COMMIT;