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@thebuild.com
> <mailto:xof@thebuild.com>> wrote:
>
>
>     On Aug 30, 2015, at 11:59 AM, Christopher Brooks <brooksch@umich.edu
>     <mailto:brooksch@umich.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@thebuild.com <mailto:xof@thebuild.com>
>
>
>
>
> --
> Christopher Brooks, PhD
> Research Fellow
>
> E-Mail: brooksch@umich.edu <mailto:brooksch@umich.edu>
> Web: http://www.si.umich.edu/people/christopher-brooks
>
> Mail:School of Information
> University of Michigan
> 4322 North Quad
> 105 S. State St.
> Ann Arbor, MI 48109-1285


--
Adrian Klaver
adrian.klaver@aklaver.com