For what it's worth, I think the "?" operator would work for this with JSONB, but not with JSON:
postgres=# select '["user1", "user2"]'::jsonb ? 'user1'; ?column? ---------- t (1 row) postgres=# select '["user1", "user2"]'::jsonb ? 'user2'; ?column? ---------- t (1 row) postgres=# select '["user1", "user2"]'::jsonb ? 'user3'; ?column? ---------- f (1 row) SQLAlchemy surfaces the "?" operator as <column>.has_key https://docs.sqlalchemy.org/en/14/dialects/postgresql.html#sqlalchemy.dialects.postgresql.JSONB.Comparator.has_key https://github.com/sqlalchemy/sqlalchemy/blob/main/lib/sqlalchemy/dialects/postgresql/json.py#L33 Simon On Mon, Oct 18, 2021 at 10:35 PM Jonathan Vanasco <jvana...@gmail.com> wrote: > > I'm not sure, but AFAIK, this type of search isn't *easily* doable in > PostgreSQL. The json and jsonb operators and functions are really targeting > "object literals" style data, not lists. > > https://www.postgresql.org/docs/current/functions-json.html > > In the past, I think one could search against the column like text and > match/regex out a list value like `"user1"` - but that didn't work right. > > This type of search is possible with advanced PostgreSQL queries, by using > the functions like json_array_elements on a field and joining against that. > That's really not within the scope of SQLAlchemy or this list though, and > you'll have better luck search (or asking) on Stack Overflow. There are a > handful of questions and solutions there on this topic. > > Once you can figure out the PostgreSQL queries to accomplish what you want, > this list can help you convert it to SQLAlchemy if you have trouble. > > On Wednesday, October 13, 2021 at 9:50:16 AM UTC-4 chat...@gmail.com wrote: >> >> Imagine a Postgres JSON column with values like below: >> >> "["user1", "user2"]" >> >> Is there any way to query a postgres JSON (not JSONB) column with >> SqlAlchemy,like above that checks if the value "user1" is contained in this >> column? > > -- > 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 view this discussion on the web visit > https://groups.google.com/d/msgid/sqlalchemy/8f1986f6-4a39-4cad-93f2-a8d1c392b4b2n%40googlegroups.com. -- 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 view this discussion on the web visit https://groups.google.com/d/msgid/sqlalchemy/CAFHwexfnFazzHYEgM%2BKt9QqcHM-HQFWkpjofvih%3Dm5GNL5G4dQ%40mail.gmail.com.
