Postgres and SQL Server have always had transactions; but unless you frame your DML in BEGIN TRANSACTION/[COMMIT|ROLLBACK], each statement is committed as executed.
If you broke in on Oracle, where you must explicitly commit statements (unless your client sets up auto-commit), this can take some getting used to.
If you broke in on Oracle, where you must explicitly commit statements (unless your client sets up auto-commit), this can take some getting used to.