Faheem Mitha wrote:
>
> Hi,
>
> I've got a query as follows:
>
> from sqlalchemy.sql import text
>
> gq = text("""
> SELECT decode_genotype(cell.snpval_id, snp.allelea_id,
> snp.alleleb_id) FROM cell JOIN snp ON snp.fid =
> cell.snp_id WHERE cell.patient_chipid IN ('DUKE00001_plateA_A10.CEL',
> 'DUKE00001_plateA_A11.CEL')
> """)
> I want to pass in the tuple as an argument, and was wondering how to do
> it.
>
> So, I'm looking for something conceptually like
>
> gq = text("""
> SELECT decode_genotype(cell.snpval_id, snp.allelea_id,
> snp.alleleb_id) FROM cell JOIN snp ON snp.fid =
> cell.snp_id WHERE cell.patient_chipid IN :plist
> """)
>
> gq = conn.execute(gq, plist="('DUKE00001_plateA_A10.CEL',
> 'DUKE00001_plateA_A11.CEL')")
>
> Note, I want to pass in a tuple of arbitary length, so changing this to
> pass two string arguments would not do. Perhaps I'm supposed to pass in
> some bindparams too, but I don't know what type I should be using.
IN takes a list of scalars, each of which requires its own :bind
parameter. On Postgresql you might find it more convenient to use ANY,
which takes a single array argument. "WHERE cell.patient_chipid ANY
(:plist)"
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