text: CREATE TABLE project_flows (
    project_id    INT    NOT NULL,
    version       INT    NOT NULL,
    flow_id       VARCHAR(128),
    modified_time BIGINT NOT NULL,
    encoding_type TINYINT,
    json          BLOB,
    PRIMARY KEY (project_id, version, flow_id)
  );
  
  CREATE INDEX flow_index
    ON project_flows (project_id, version);
  