Re: VARCHAR versus TEXT when using psychopg2, sqlalchemy and redshift

On 08/30/2015 12:04 PM, Christopher Brooks wrote:
> Yes, this is what I was aiming to do. Maybe I've got the sql alchemy
> syntax wrong? I though insert().values took in iterables for row by row
> inserts...
>

Think you want to take a look here:

http://docs.sqlalchemy.org/en/rel_1_0/core/dml.html#sqlalchemy.sql.expression.Insert.values

in particular:

The Insert construct also supports multiply-rendered VALUES construct,
for those backends which support this SQL syntax (SQLite, Postgresql,
MySQL). This mode is indicated by passing a list of one or more
dictionaries/tuples:

users.insert().values([
{"name": "some name"},
{"name": "some other name"},
{"name": "yet another name"},
])

> Chris
>
> On Sun, Aug 30, 2015 at 3:01 PM, Christophe Pettus <xof(at)thebuild(dot)com
> <mailto:xof(at)thebuild(dot)com>> wrote:
>
>
> On Aug 30, 2015, at 11:59 AM, Christopher Brooks <brooksch(at)umich(dot)edu
> <mailto:brooksch(at)umich(dot)edu>> wrote:
> > [SQL: 'INSERT INTO qualtrics_dim (k, v) VALUES (%(k)s, %(v)s)'] [parameters: {'v': ['aa', 'bb'], 'k': ['a', 'b']}]
>
> The values you've written there are two arrays of TEXT values, but
> the columns aren't declared as TEXT or VARCHAR arrays, but as single
> VARCHAR values. Are you trying to insert two rows of the form 'aa',
> 'a' and 'bb', 'b'?
>
> --
> -- Christophe Pettus
> xof(at)thebuild(dot)com <mailto:xof(at)thebuild(dot)com>
>
>
>
>
> --
> Christopher Brooks, PhD
> Research Fellow
>
> E-Mail: brooksch(at)umich(dot)edu <mailto:brooksch(at)umich(dot)edu>
> Web: http://www.si.umich.edu/people/christopher-brooks
>
> Mail:School of Information
> University of Michigan
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> Ann Arbor, MI 48109-1285

--
Adrian Klaver
adrian(dot)klaver(at)aklaver(dot)com