johnnyp wrote: > > Background > ------------------ > I found that performing a "select cols from mytable where X like 'foo > %' was dog slow on my postgresql database. > Analysing the query plan showed that, although X was indexed, the > query was always performing a table scan. > > The database uses UTF-8 encoding, and after a bit of research, I found > that I had to define a second index on X, using 'pattern_ops' (as > described in Postgresql 8.3 manual section 11.9): > > CREATE INDEX new_index on mytable (X varchar_pattern_ops). > > That did the right thing and sorted out the performance problem. > > Question > -------------- > Is there a way that I can specify pattern_ops in the index definition > within SqlAlchemy? > > If not, is postgres.py/PGSchemaGenerator.visit_index the right place > for me to have a go at hacking something?
i would just use DDL() for this. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To post to this group, send email to sqlalchemy@googlegroups.com To unsubscribe from this group, send email to sqlalchemy+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en -~----------~----~----~----~------~----~------~--~---
