#28451: Change in Oracle sequence name truncation causes regression when updating existing database -------------------------------------+------------------------------------- Reporter: Kevin Grinberg | Owner: Kevin | Grinberg Type: Bug | Status: assigned Component: Database layer | Version: 1.11 (models, ORM) | Severity: Release blocker | Resolution: Keywords: oracle | Triage Stage: Accepted Has patch: 1 | Needs documentation: 0 Needs tests: 0 | Patch needs improvement: 0 Easy pickings: 0 | UI/UX: 0 -------------------------------------+-------------------------------------
Comment (by Tim Graham): We'll put the upgrade script here: {{{#!python from django.db import connection from django.db.backends.utils import strip_quotes, truncate_name for seq in connection.introspection.sequence_list(): name_length = 27 table, column = seq['table'], seq['column'] if len(table) >= name_length: with connection.cursor() as cursor: # 1.11.[1-4] format old_sq_name = truncate_name('%s_SQ' % strip_quotes(table), name_length).upper() # pre-1.11, 1.11.5+ new_sq_name = '%s_SQ' % truncate_name(strip_quotes(table), name_length).upper() cursor.execute('SELECT sequence_name FROM user_sequences WHERE sequence_name=%s', [old_sq_name]) row = cursor.fetchone() if row: cursor.execute('RENAME %s TO %s' % (old_sq_name, new_sq_name)) args = { 'new_tr_name': '%s_TR' % truncate_name(strip_quotes(table), name_length).upper(), 'tbl_name': table.upper(), 'sq_name': new_sq_name, 'col_name': column.upper(), } old_tr_name = truncate_name('%s_TR' % strip_quotes(table), name_length).upper() cursor.execute('DROP TRIGGER %s' % old_tr_name) trigger_sql = """ CREATE OR REPLACE TRIGGER "%(new_tr_name)s" BEFORE INSERT ON %(tbl_name)s FOR EACH ROW WHEN (new.%(col_name)s IS NULL) BEGIN SELECT "%(sq_name)s".nextval INTO :new.%(col_name)s FROM dual; END; /""" % args cursor.execute(trigger_sql) }}} -- Ticket URL: <https://code.djangoproject.com/ticket/28451#comment:8> Django <https://code.djangoproject.com/> The Web framework for perfectionists with deadlines. -- You received this message because you are subscribed to the Google Groups "Django updates" group. To unsubscribe from this group and stop receiving emails from it, send an email to django-updates+unsubscr...@googlegroups.com. To post to this group, send email to django-updates@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/django-updates/067.741e0ea27bf3a5aaad8dfc6d67438700%40djangoproject.com. For more options, visit https://groups.google.com/d/optout.