Error with MySQL syntax in event sql-script. Delimeter already used - mysql

Question

I have this script for update table monthly:
DELIMITER |
CREATE
EVENT `kpiparams_scheduled_update`
ON SCHEDULE
EVERY 1 MONTH
STARTS '2020-02-01 02:59:59'
ON COMPLETION PRESERVE
COMMENT 'KPIParams was updated by event_kpiparams_scheduled_update'
DO
BEGIN
UPDATE kpiparams INNER JOIN kpiparams_update
ON kpiparams.param_name = kpiparams_update.param_name
SET kpiparams.good = kpiparams_update.good,
kpiparams.bad = kpiparams_update.bad,
kpiparams.weight_gold = kpiparams_update.weight_gold,
kpiparams.weight_tech = kpiparams_update.weight_tech,
kpiparams.is_for_calc = kpiparams_update.is_for_calc
WHERE kpiparams.param_name = kpiparams_update.param_name;
END |
DELIMITER ;
This code drop exception:
Caused by: java.sql.SQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'DELIMITER | CREATE EVENT kpiparams_scheduled_update ON SCHEDULE EVERY 1 MONTH ST' at line 1
And this:
nested exception is java.sql.SQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'DELIMITER | CREATE EVENT kpiparams_scheduled_update ON SCHEDULE EVERY 1 MONTH ' at line 1
I serched some resources that said, I need use Delimeter, don't write amount of months in '' and use BEGIN-END. By the way, it didn't help me.
spring.datasource.schema=classpath*:mysql-scripts/event_update_kpiparams.sql
EDITED SCRIPT:
CREATE
EVENT kpiparams_scheduled_update
ON SCHEDULE EVERY 1 MONTH STARTS '2020-02-01 02:59:59'
ON COMPLETION PRESERVE
COMMENT 'KPIParams was updated by event_kpiparams_scheduled_update'
DO
BEGIN
UPDATE kpiparams INNER JOIN kpiparams_update
ON kpiparams.param_name = kpiparams_update.param_name
SET kpiparams.good = kpiparams_update.good,
kpiparams.bad = kpiparams_update.bad,
kpiparams.weight_gold = kpiparams_update.weight_gold,
kpiparams.weight_tech = kpiparams_update.weight_tech,
kpiparams.is_for_calc = kpiparams_update.is_for_calc
WHERE kpiparams.param_name = kpiparams_update.param_name;
END

Answer 1

I guess you tried to run this using JDBC?
You don't need DELIMITER | at all. That's a mysql client builtin command. Client builtins are not recognized by the SQL parser.
You can just execute the CREATE EVENT statement as a single statement and then you don't need to have a delimiter at the end of the statement. Delimiters are only important in interfaces that support multiple statements (e.g. the mysql client).
Okay it seems you are using multiple statements in an .sql file and you need some way of separating the statements. Normally this is ; but you have some statements that contain ; as part of the statement, not as the separator.
I'm not a Spring developer, but I found Spring Boot Database initialization MySQLException for Trigger which describes the use of:
spring.datasource.separator
This is also documented: https://docs.spring.io/spring-boot/docs/current/reference/html/appendix-application-properties.html
spring.datasource.separator
(default) ;
Statement separator in SQL initialization scripts.