Support table which contains tsvector column

I’ve attempted to query all items in a postgres table. The table contains a column of type tsvector, which seems to be the cause of this crash.

(node:52874) UnhandledPromiseRejectionWarning: Error: 
Invalid `prisma.article.findMany()` invocation in
/home/emi/Projects/prisma-playground/index.ts:5:16

  1 import { PrismaClient } from '@prisma/client'
  2 
  3 const prisma = new PrismaClient()
  4 
→ 5 prisma.article.findMany().then((x) => 

Error occurred during query execution:
ConnectorError(ConnectorError { user_facing_error: None, kind: QueryError(Error { kind: FromSql(19), cause: Some(WrongType { postgres: TsVector, rust: "core::option::Option<alloc::string::String>" }) }) })
    at PrismaClientFetcher.request (/home/emi/Projects/prisma-playground/node_modules/@prisma/client/runtime/index.js:1:47490)
    at process._tickCallback (internal/process/next_tick.js:68:7)
(node:52874) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)
(node:52874) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

Please note that it’s very uncommon fetch the value of tsvector columns, it is rather used for building full text indices.

Here is the table schema, for your convenience:

CREATE TABLE public."Article" (
	title text NOT NULL,
	text_index tsvector NULL,
);

Version information:

$ /home/emi/Projects/prisma-playground/node_modules/.bin/prisma2 version
prisma2@2.0.0-preview024, binary version: 377df4fe30aa992f13f1ba152cf83d5770bdbc85

[ejoebstl]

To be honest, I would omit it in the output.

tsvector columns are interesting for filtering and ranking the results, but I would guess most use cases don’t require them in the client application.

Otherwise, according to the documentation:

A tsvector value is a sorted list of distinct lexemes, which are words that have been normalized to merge different variants of the same word.

And

Optionally, integer positions can be attached to lexemes.

So a good representation would be an ordered list of key-value tuples, where the key is a string and the value is a list of integers.

[janpio]

Closing as duplicate of https://github.com/prisma/prisma/issues/5027 - please follow that issue.