The Structure of SQL Scripts

Database migration SQL scripts are text files with a set of DDL and DML commands separated by the "^" character. The "^" character is used, so that the ";" separator can be applied as part of complex commands; for example, when creating functions or triggers. The script execution mechanism splits the input file into separate commands using the "^" separator and executes each command in a separate transaction. This means that, if necessary, it is possible to group several single statements (e.g., insert), separated by semicolons and ensure that they execute in a single transaction.

The "^" delimiter can be escaped by doubling it. For example, if you want to pass ^[0-9\s]+$ to a statement, the script should contain ^^[0-9\s]+$.

An example of the update SQL script:

create table LIBRARY_COUNTRY (
  ID varchar(36) not null,
  CREATE_TS time,
  CREATED_BY varchar(50),
  NAME varchar(100) not null,
  primary key (ID)

alter table LIBRARY_TOWN add column COUNTRY_ID varchar(36) ^
alter table LIBRARY_TOWN add constraint FK_LIBRARY_TOWN_COUNTRY_ID foreign key (COUNTRY_ID) references LIBRARY_COUNTRY(ID)^