![]() If you need to figure out how to do this yourself, psql -E is your friend, because when you run something like \doS (describe operators in all schemas), it will output a query like the one below (the one below is one I copied and modified to find all operators with a question mark in them for the table in the first post). I’ve been playing in pg_catalog recently because I’ve been building some tooling to automate the construction of monthly table partitioning in PostgreSQL 9.6, so I’m as apt to dig into this now as ever. Third post on this for those following along, how I figured all of this out. Unless you know these operators have been created, asking questions about these would cause confusion. Unfortunately, no one in the PostgreSQL community will understand these operators against json/ jsonb types because you’ve created them, and you’re no longer writing standard PostgreSQL JSON queries. PROCEDURE=pg_catalog.jsonb_exists_any,LEFTARG=jsonb, RIGHTARG=text PROCEDURE=pg_catalog.jsonb_exists_all, LEFTARG=jsonb, RIGHTARG=text PROCEDURE=pg_catalog.jsonb_exists, LEFTARG=jsonb, RIGHTARG=text The functions for ?& and ?| are jsonb_exists_all and jsonb_exists_any, so those can be used as well (but note that the types are text, so you would need to do fragment("jsonb_exists_any(?, ?)", u.data, )).Ĭreate a new operator analogous to ?, ?&, and ?| in your schema. fragment("jsonb_exists(?, ?)", u.data, "honorific"). Use the underlying function of ? directly. Both of these depend on an undocumented function (only the ? operator is documented) and a bit of digging to produce something similar as needed. This does not answer the question I raised above, but I have found two workarounds for this using PostgreSQL. │ ?|| │ lseg │ lseg │ boolean │ parallel │ │ ?|| │ line │ line │ boolean │ parallel │ │ ?| │ point │ point │ boolean │ vertically aligned │ │ ?| │ jsonb │ text │ boolean │ any key exists │ │ ?-| │ lseg │ lseg │ boolean │ perpendicular │ ![]() │ ?-| │ line │ line │ boolean │ perpendicular │ │ ?- │ point │ point │ boolean │ horizontally aligned │ │ ?& │ jsonb │ text │ boolean │ all keys exist │ │ ?# │ path │ path │ boolean │ intersect │ │ ?# │ lseg │ lseg │ boolean │ intersect │ │ ?# │ lseg │ line │ boolean │ intersect │ │ ?# │ lseg │ box │ boolean │ intersect │ │ ?# │ line │ line │ boolean │ intersect │ │ ?# │ line │ box │ boolean │ intersect │ │ ?# │ box │ box │ boolean │ deprecated, use & instead │ │ ? │ jsonb │ text │ boolean │ key exists │ ![]() │ │ abstime │ tinterval │ boolean │ is contained by │ │ Name │ Left arg│ Right arg │ Result type │ Description │ The former fails with a compile error (not enough parameters to match the number of question marks) and the latter fails in the query because it produces SELECT u0.* FROM users WHERE u.data '?' 'honorific'. Neither of these work: from u in :users, where: fragment("? \?", u.data, "honorific")įrom u in :users, where: fragment("?", u.data, "?", "honorific") You’ll see that the changes map is empty.How do I use the PostgreSQL JSON ? operator in Ecto? Assume that I have a table users that has a JSONB field data, and I want to test (in PostgreSQL) whether it has a key honorific. JSON string: changeset = User.changeset(retrieved_user, %) I’ve tried using both a JSON string and a map. I’ve been trying to set values into the data map using a changeset, but I haven’t had any luck. Here’s my schema: defmodule MyApp.User doīuilds a changeset based on the `struct` and `params`. ![]() ![]() Here’s my migration to add it to my table: defmodule do I’m trying to use Postgres’ JSONB via the :map datatype. I’ve just started learning Elixir and Phoenix Framework, so please pardon my n00bness at this stage. ![]()
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