Spring Boot Database initialization MySQLException for Trigger

Question

I am using Spring Boot Database initialization using Spring JDBC with schema.sql file.I am using MYSQL

If I have simple table creation in schema.sql as follows it wo

Answer 1

My issue was resolved when I have added spring.datasource.separator=^; in application.properties and every line out side the procedure/trigger should be terminated with ^; Example as follows:

DROP TRIGGER IF EXISTS Persons_log_update ^; 

CREATE TRIGGER Persons_log_update 
    BEFORE UPDATE ON Persons
    FOR EACH ROW 
BEGIN

    INSERT INTO Personshistory(PersonID,LastName,FirstName,Address,City)
    values(OLD.PersonID,OLD.LastName,OLD.FirstName,OLD.Address,OLD.City);

END ^;

Answer 2

setting spring.datasource.separator=^; does not resolved my issue.

I am using ResourceDatabasePopulator class to load sql scripts and found that this class provides method to set Separator so i did that.

Note: dataSource object is autowired and is configured by spring. so add it (javax.sql.DataSource) before using it.

@Autowired DataSoruce dataSource

ResourceDatabasePopulator triggersPopulator = new ResourceDatabasePopulator(false, false, StandardCharsets.UTF_8.toString(), new ClassPathResource("triggers.sql"));
        triggersPopulator.setSeparator("//");
        triggersPopulator.execute(dataSource);

and done changes in sql script as per separator (//).

drop trigger if exists news_data_total_news_incremental_trigger;
//
create trigger news_data_total_news_incremental_trigger
after insert on `news_data` for each row
begin
declare cnt,newcnt bigint;
select `count` into cnt from `news_data_total_news` limit 1;
set newcnt = cnt + 1;
update `news_data_total_news` set `count` = newcnt where `count` = cnt;
end//

And it worked.

One more thing, we can have multiple ResourceDatabasePopulator objects with different separator defined.

ResourceDatabasePopulator resourceDatabasePopulator = new ResourceDatabasePopulator(false, false, StandardCharsets.UTF_8.toString(), new ClassPathResource("data.sql"));
        resourceDatabasePopulator.execute(dataSource);
        
ResourceDatabasePopulator triggersPopulator = new ResourceDatabasePopulator(false, false, StandardCharsets.UTF_8.toString(), new ClassPathResource("triggers.sql"));
        triggersPopulator.setSeparator("//");
        triggersPopulator.execute(dataSource);

As you can see, i have two ResourceDatabasePopulator objects to load two different sql scripts, data.sql with default separator and triggers.sql with // as separator.