On 12/02/2016 02:37 PM, Katie Wurman wrote:
What's the proper syntax for doing a bulk upsert using the new
on_conflict_do_update clause? In postgres there is apparently a special
table called 'excluded' which contains all the rows to be inserted, so
the raw query looks like this:
INSERT into MYTABLE(col1,col2,col3) VALUES (a,b,c),(d,e,f)
ON CONFLICT (col1) DO
UPDATE SET
col2 = excluded.col2
col3 = excluded.col3
Does sqlalchemy support bulk upserts like this yet?
that is now supported using a special PG specific Insert object:
http://docs.sqlalchemy.org/en/latest/dialects/postgresql.html?highlight=conflict#insert-on-conflict-upsert
examples of how to use "excluded" are present in that documentation section.
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