Using Flyway set variable statement throws error - flyway

Question

In my EBevar SQL is working well:
BUT ....
Spring boot flyway application runs, it throws an error:
org.springframework.beans.factory.BeanCreationException: Error
creating bean with name 'flywayInitializer' defined in class path
resource
[org/springframework/boot/autoconfigure/flyway/FlywayAutoConfiguration$FlywayConfiguration.class]:
Invocation of init method failed; nested exception is
org.flywaydb.core.internal.command.DbMigrate$FlywayMigrateException:
Migration V1__obsolete.sql failed
-------------------------------------- SQL State : 42601 Error Code : 0 Message : ERROR: syntax error at or near "#" Position: 1
Location : db/migration/pgsql/_env/V1__obsolete.sql
(C:\workspace\t-flyway\target\classes\db\migration\pgsql_env\V1__obsolete.sql)
Line : 1 Statement : #set TESTINGE = te
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1796)
~[spring-beans-5.2.7.RELEASE.jar:5.2.7.RELEASE] at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:595)
~[spring-beans-5.2.7.RELEASE.jar:5.2.7.RELEASE] at org.springframe
I also check with different cases with JDBC.
CASE 1: I got error when I execute this code:
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
public class MysqlCon {
public static void main(String args[]) throws Exception{
Class.forName("org.postgresql.Driver");
Connection con=DriverManager.getConnection(
"jdbc:postgresql://localhost:5432/test1?createDatabaseIfNotExist=true&autoReconnect=true&useSSL=false&allowPublicKeyRetrieval=true","postgres","postgres");
Statement s = con.createStatement();
ResultSet rs = s.executeQuery("#set TESTINGE = te");
}
}
Error:
Exception in thread "main" org.postgresql.util.PSQLException: ERROR:
syntax error at or near "#" Position: 1 at
org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2532)
at
org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:2267)
at
org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:312)
at
org.postgresql.jdbc.PgStatement.executeInternal(PgStatement.java:448)
at org.postgresql.jdbc.PgStatement.execute(PgStatement.java:369) at
org.postgresql.jdbc.PgStatement.executeWithFlags(PgStatement.java:310)
at
org.postgresql.jdbc.PgStatement.executeCachedSql(PgStatement.java:296)
at
org.postgresql.jdbc.PgStatement.executeWithFlags(PgStatement.java:273)
at org.postgresql.jdbc.PgStatement.executeQuery(PgStatement.java:226)
at com.techgeeknext.MysqlCon.main(MysqlCon.java:14)
I also checked another way:
CASE 2:
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
public class MysqlCon {
public static void main(String args[]) throws Exception{
Class.forName("org.postgresql.Driver");
Connection con=DriverManager.getConnection(
"jdbc:postgresql://localhost:5432/test1?createDatabaseIfNotExist=true&autoReconnect=true&useSSL=false&allowPublicKeyRetrieval=true","postgres","postgres");
Statement s = con.createStatement();
ResultSet rs = s.executeQuery("SET TESTINGE TO te");
}
}
Error:
Exception in thread "main" org.postgresql.util.PSQLException: ERROR:
unrecognized configuration parameter "testinge" at
org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2532)
at
org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:2267)
at
org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:312)
at
org.postgresql.jdbc.PgStatement.executeInternal(PgStatement.java:448)
at org.postgresql.jdbc.PgStatement.execute(PgStatement.java:369) at
org.postgresql.jdbc.PgStatement.executeWithFlags(PgStatement.java:310)
at
org.postgresql.jdbc.PgStatement.executeCachedSql(PgStatement.java:296)
at
org.postgresql.jdbc.PgStatement.executeWithFlags(PgStatement.java:273)
at org.postgresql.jdbc.PgStatement.executeQuery(PgStatement.java:226)
at com.techgeeknext.MysqlCon.main(MysqlCon.java:14)
Thanks in advance

Answer 1

This is because #set is a DBeaver specific command. It‘s not handled on the server but on your DBeaver client.
see DBeaver handbook (https://dbeaver.com/doc/dbeaver.pdf) section Client Side Commands:
You can use special commands in the SQL scripts. These commands are executed on DBeaver's side, not on the server-side.
If you want to use Variables in Flyway you may want to have a look into Flyway placeholders: https://flywaydb.org/documentation/configuration/placeholder