Column doesn't exist when creating table

Basic info

pg-mem version: 1.9.9 jest version: 27.0.4 typeorm version: 0.2.35

Reproduction link: https://gist.github.com/Sven65/5b462e2d2d4ded3d8f89d4792bf4fd6b

Issue

When trying to create a table using pg-mem and typeorm entities, it fails as the column doesn’t exist, with the following error message:

QueryFailedError: column "userid" does not exist

    🐜 This seems to be an execution error, which means that your request syntax seems okay,
    but the resulting statement cannot be executed → Probably not a pg-mem error.

    *️⃣ Failed SQL statement: CREATE TABLE "userStats" ("userID" character varying(255) NOT NULL, CONSTRAINT "UQ_abb77da609fd701b7052a8b4531" UNIQUE ("userID"), CONSTRAINT "PK_abb77da609fd701b7052a8b4531" PRIMARY KEY ("userID"));

Stacktrace

 at QueryFailedError.TypeORMError [as constructor] (src/error/TypeORMError.ts:7:9)
      at new QueryFailedError (src/error/QueryFailedError.ts:9:9)
      at PostgresQueryRunner.call (src/driver/postgres/PostgresQueryRunner.ts:258:19)
      at step (node_modules/typeorm/node_modules/tslib/tslib.js:143:27)
      at Object.throw (node_modules/typeorm/node_modules/tslib/tslib.js:124:57)
      at rejected (node_modules/typeorm/node_modules/tslib/tslib.js:115:51)

[oguimbal]

Hi ! I just fixed it.

I still have several (unrelated) unit tests to fix, but it will be published with the next pg-mem version, hopefully a bit later this week.

Thanks for the feedback 😃

[linsolas]

More of my investigation. The problem is not on pg-mem but more on pgsql-ast-parser. When it parses the constraints, it transforms the column name in lowercase.

If I take the SQL code generated by the @Sven65 code, and I put it on the pg-mem playground, we can see that it fails saying that column userid does not exist:

CREATE TABLE "userStats" (
    "userID" character varying(255) NOT NULL,
    CONSTRAINT "UQ_abb77da609fd701b7052a8b4531" UNIQUE ("userID"),
    CONSTRAINT "PK_abb77da609fd701b7052a8b4531" PRIMARY KEY ("userID")
);

But with everything in lowercase, it works:

CREATE TABLE "userStats" (
    "userid" character varying(255) NOT NULL,
    CONSTRAINT "UQ_abb77da609fd701b7052a8b4531" UNIQUE ("userid"),
    CONSTRAINT "PK_abb77da609fd701b7052a8b4531" PRIMARY KEY ("userid")
);

I will create a ticket on pgsql-ast-parser repository…