On 28/09/2011 14:09, Michael Bayer wrote:
Hmm, but both mysql and postgres (I suspect others do too, but I haven't checked) have
"DROP TABLE IF EXISTS" statements so you don't need to do any checking. That
feels like it should be supported by the DropTable construct, what am I missing?
oh, that. Right you'd need to use @compiles to enhance a new subclass of DropTable to do
that, as SQLA's compiler doesn't have the "IF EXISTS" feature present at the
moment (it could be added).
I guess it probably should, I think that one could legitimately be in
sqlalchemy itself ;-)
The "E" is how psycopg2 formats the %s -> table.name parameter in your
statement for certain versions of Postgresql. I don't know what it actually means but if
you watch your PG logs you'll see it's used for all bound parameters.
Hmm, any ideas why it'd cause a syntax error here?
I'm doing engine.execute('drop table if exists %s' + table.name) in the
meantime, which just feels icky...
Chris
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