I am trying to get my ingredients to be updated one ingredient at a time. So that there is a link next to each of the ingredients. I am getting a template syntax error. Can anyone help me resolve this?
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Primary keys are per table not per database. So if you check your target table’s information you can see if it has any primary keys defined. If it doesn’t you can define some.
Highly recommend documentation for this. For primary keys you can read about it in constraints. For making changes to the table (including adding a constraint) you can read about it in alter table. pg_catalog for metadata (if you need to literally make a query that gets the constraints).