False positive for `prefer-robust-stmts` being reported even inside a transaction

[bmbferreira]

For the following script:

SELECT * FROM current_schema();

CREATE EXTENSION IF NOT EXISTS "uuid-ossp";

SELECT version();

SELECT * FROM "information_schema"."tables" WHERE "table_schema" = 'public' AND "table_name" = 'migrations';

SELECT * FROM "migrations" "migrations" ORDER BY "id" DESC;

START TRANSACTION;

ALTER TABLE "A" DROP CONSTRAINT "UQ_c4fb579a038211909ee524ccf29";

ALTER TABLE "B" DROP CONSTRAINT "UQ_791c01fe9438d66a94490d0da28";

ALTER TABLE "C" DROP CONSTRAINT "UQ_23fbf20e8ab4e806941359f4f79";

ALTER TABLE "D" DROP CONSTRAINT "UQ_468cad3743146a81c94b0b114ac";

COMMIT;

It is reporting:

extracted_statements.sql:12:2: warning: prefer-robust-stmts

  12 | ALTER TABLE "A" DROP CONSTRAINT "UQ_c4fb579a038211909ee524ccf29";

  help: Consider wrapping in a transaction or adding a IF NOT EXISTS clause if the statement supports it.

extracted_statements.sql:14:2: warning: prefer-robust-stmts

  14 | ALTER TABLE "B" DROP CONSTRAINT "UQ_791c01fe9438d66a94490d0da28";

  help: Consider wrapping in a transaction or adding a IF NOT EXISTS clause if the statement supports it.

extracted_statements.sql:16:2: warning: prefer-robust-stmts

  16 | ALTER TABLE "C" DROP CONSTRAINT "UQ_23fbf20e8ab4e806941359f4f79";

  help: Consider wrapping in a transaction or adding a IF NOT EXISTS clause if the statement supports it.

extracted_statements.sql:18:2: warning: prefer-robust-stmts

  18 | ALTER TABLE "D" DROP CONSTRAINT "UQ_468cad3743146a81c94b0b114ac";

  help: Consider wrapping in a transaction or adding a IF NOT EXISTS clause if the statement supports it.

As we can see, it is wrapped inside a transaction so I think nothing should be reported.

[sbdchd]

ah seems we don't detect START TRANSACTION, as a workaround if you use BEGIN TRANSACTION it should work

[bmbferreira]

unfortunately we're using TypeORM 😞 I think I don't have much control on how the transaction is started when executing the migrations.

I can try and open a PR to fix this 😄