presto-resource-group-managers/src/main/java/io/prestosql/plugin/resourcegroups/db/ResourceGroupsDao.java/ResourceGroupsDao/createSelectorsTable
class ResourceGroupsDao:    @SqlUpdate("CREATE TABLE IF NOT EXISTS selectors (\n" +
            "  resource_group_id BIGINT NOT NULL,\n" +
            "  priority BIGINT NOT NULL,\n" +
            "  user_regex VARCHAR(512),\n" +
            "  source_regex VARCHAR(512),\n" +
            "  query_type VARCHAR(512),\n" +
            "  client_tags VARCHAR(512),\n" +
            "  selector_resource_estimate VARCHAR(1024),\n" +
            "  FOREIGN KEY (resource_group_id) REFERENCES resource_groups (resource_group_id)\n" +
            ")")
    void createSelectorsTable();