CREATE ALIAS IF NOT EXISTS EXECUTE AS $$ void executeSql(Connection conn, String sql) throws SQLException { try { conn.createStatement().executeUpdate(sql); } catch (Exception e) {} } $$; CALL EXECUTE('ALTER TABLE POSITION DROP CONSTRAINT ' || (SELECT DISTINCT UNIQUE_INDEX_NAME FROM INFORMATION_SCHEMA.CONSTRAINTS WHERE CONSTRAINT_TYPE = 'REFERENTIAL' AND TABLE_NAME = 'POSITION' AND COLUMN_LIST = 'DEVICEID')); CALL EXECUTE('ALTER TABLE DEVICE DROP CONSTRAINT ' || (SELECT DISTINCT UNIQUE_INDEX_NAME FROM INFORMATION_SCHEMA.CONSTRAINTS WHERE CONSTRAINT_TYPE = 'REFERENTIAL' AND TABLE_NAME = 'DEVICE' AND COLUMN_LIST = 'POSITIONID')); CALL EXECUTE('ALTER TABLE DEVICE DROP CONSTRAINT ' || (SELECT DISTINCT UNIQUE_INDEX_NAME FROM INFORMATION_SCHEMA.CONSTRAINTS WHERE CONSTRAINT_TYPE = 'REFERENTIAL' AND TABLE_NAME = 'DEVICE' AND COLUMN_LIST = 'DATAID')); CALL EXECUTE('ALTER TABLE USER_DEVICE DROP CONSTRAINT ' || (SELECT DISTINCT UNIQUE_INDEX_NAME FROM INFORMATION_SCHEMA.CONSTRAINTS WHERE CONSTRAINT_TYPE = 'REFERENTIAL' AND TABLE_NAME = 'USER_DEVICE' AND COLUMN_LIST = 'USERID')); CALL EXECUTE('ALTER TABLE USER_DEVICE DROP CONSTRAINT ' || (SELECT DISTINCT UNIQUE_INDEX_NAME FROM INFORMATION_SCHEMA.CONSTRAINTS WHERE CONSTRAINT_TYPE = 'REFERENTIAL' AND TABLE_NAME = 'USER_DEVICE' AND COLUMN_LIST = 'DEVICEID')); CALL EXECUTE('ALTER TABLE DATA DROP CONSTRAINT ' || (SELECT DISTINCT UNIQUE_INDEX_NAME FROM INFORMATION_SCHEMA.CONSTRAINTS WHERE CONSTRAINT_TYPE = 'REFERENTIAL' AND TABLE_NAME = 'DATA' AND COLUMN_LIST = 'DEVICEID'));