toll_archive=# begin;
BEGIN
Time: 0.124 ms
toll_archive=# create table foo (f1 int primary key);
NOTICE:  CREATE TABLE / PRIMARY KEY will create implicit index "foo_pkey" for table "foo"
CREATE TABLE
Time: 281.424 ms
toll_archive=# commit;
COMMIT
Time: 15.864 ms
toll_archive=# begin;
BEGIN
Time: 0.204 ms
toll_archive=# insert into foo (1);
ERROR:  syntax error at or near "1" at character 18
LINE 1: insert into foo (1);
                         ^
toll_archive=# insert into foo values (1);
ERROR:  current transaction is aborted, commands ignored until end of transaction block