Allow for DDL and unsupported statements as a query

[Jille]

By adding 'no-inference' to your query comment, sqlc won't try to understand your query. (The dolphin/postgresql/sqlite parser still need to understand your syntax.) This means that params and output columns don't work, but you can run any query you want.

[andrewmbenton]

Sorry for the delay @Jille. I think we shouldn't introduce new query comment syntax, but the idea here is good. I think what we should do is allow :exec to be more permissive. In other words, I think (to modify your test example a little) the following should "just work" instead of silently doing nothing like sqlc does currently.

CREATETABLEfoo (val textnot null); -- name: CreateTempTable :exec CREATE TEMPORARY TABLE bar (LIKE foo);

[andrewmbenton]

@Jille the new database-backed analyzer actually handles the test case in my last comment.