what's the default on the column? seems like that's the problem here. if this is an in-SQLAlchemy default, that won't work, you need to generate the uuids on the database side if you are using a SELECT. The functions are available through an extension on PG, there's background here: https://dba.stackexchange.com/a/122624/81161 on setting it all up.
if you dont want to set the DEFAULT on the column, you can run it in the SELECT using: SELECT([func.uuid_generate_v1(), sometable.c.a, sometable.c.b]) On Wed, Jun 12, 2019, at 3:38 PM, Colton Allen wrote: > Also, I should mention the ID is not explicitly mentioned in the select > query. I am relying on the column's "default" argument to supply the UUID. > > Also also, I made a typo. It should read "when the select only finds one row". > > On Wednesday, June 12, 2019 at 12:36:50 PM UTC-7, Colton Allen wrote: >> I'm using Postgres and I am getting a duplicate primary key error when >> attempting to insert from a query. My primary key is a UUID type. >> >> statement = insert(my_table).from_select(['a', 'b'], select([sometable.c.a, >> sometable.c.b]) >> session.execute(statement) >> session.commit() >> >> >> Error: "DETAIL: Key (id)=(f6bdf0e7-f2af-4f29-8122-5320e1ab428e) already >> exists." >> >> This query runs successfully when the select on finds one row. If there are >> more it fails. Is there a way to instruct the query to generate a UUID for >> each row found? > > -- > SQLAlchemy - > The Python SQL Toolkit and Object Relational Mapper > > http://www.sqlalchemy.org/ > > To post example code, please provide an MCVE: Minimal, Complete, and > Verifiable Example. See http://stackoverflow.com/help/mcve for a full > description. > --- > You received this message because you are subscribed to the Google Groups > "sqlalchemy" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to sqlalchemy+unsubscr...@googlegroups.com. > To post to this group, send email to sqlalchemy@googlegroups.com. > Visit this group at https://groups.google.com/group/sqlalchemy. > To view this discussion on the web visit > https://groups.google.com/d/msgid/sqlalchemy/b5856820-7fc5-43ae-9633-24578626aa1a%40googlegroups.com > > <https://groups.google.com/d/msgid/sqlalchemy/b5856820-7fc5-43ae-9633-24578626aa1a%40googlegroups.com?utm_medium=email&utm_source=footer>. > For more options, visit https://groups.google.com/d/optout. -- SQLAlchemy - The Python SQL Toolkit and Object Relational Mapper http://www.sqlalchemy.org/ To post example code, please provide an MCVE: Minimal, Complete, and Verifiable Example. See http://stackoverflow.com/help/mcve for a full description. --- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sqlalchemy+unsubscr...@googlegroups.com. To post to this group, send email to sqlalchemy@googlegroups.com. Visit this group at https://groups.google.com/group/sqlalchemy. To view this discussion on the web visit https://groups.google.com/d/msgid/sqlalchemy/31ac6852-c057-4ea3-9ff2-a004e5b5439e%40www.fastmail.com. For more options, visit https://groups.google.com/d/optout.
