| DROP TABLE if exists Accounts; |
| DROP TABLE if exists Tellers; |
| DROP TABLE if exists Branches; |
| DROP TABLE if exists History; |
| create table if not exists Accounts (id BIGINT NOT NULL PRIMARY KEY, val BIGINT); |
| create table if not exists Tellers (id BIGINT NOT NULL PRIMARY KEY, val BIGINT); |
| create table if not exists Branches (id BIGINT NOT NULL PRIMARY KEY, val BIGINT); |
| create table if not exists History (id BIGINT NOT NULL PRIMARY KEY, aid BIGINT, tid BIGINT, bid BIGINT, delta BIGINT); |
| drop index if exists H_1; |
| create index H_1 on History using btree (aid, tid, bid, delta); |
