CloneDB creates a new database, using the database at the provided URL as a template.

Dump performs a full pg_dump of the data in the database at the provided URL.

Exec executes q in the database or transaction in ctx.

NewDB creates a database initialized with the schema in schemaPath.

NewTx returns a new transaction on a database initialized with the schema in SchemaPath.

WrapDB opens a new connection to the database at the provided URL, but with a driver that calls wrapFn on every driver.Stmt.Exec call and driver.Stmt.Query call.

DefaultURL is used by NewTX and NewDB if DBURL is the empty string.

DBURL should be a URL of the form "postgres://...".

SchemaPath is a file containing a schema to initialize a database in NewTx.

Fataler lets NewTx and NewDB signal immediate failure.