code: function loadUsers (startId, orgId, teamId, callback) {
    // insert users
    console.log('inserting users ' + startId + ' to ' + (startId + NUM_USERS_PER_TEAM - 1) + ' into team: ' + teamId)
  
    var userSql = 'INSERT INTO users (id, name, org_id, metadata)\nVALUES\n'
    var userTeamSql = 'INSERT INTO team_members (user_id, team_id)\nVALUES\n'
    for (var id = startId; id < (startId + NUM_USERS_PER_TEAM); id++) {
      userSql += "('" + id + "', 'USER_" + id + "', '" + orgId + "'," + getMetaData(id, orgId) + ')'
      userTeamSql += "('" + id + "', '" + teamId + "')"
  
      if (id === startId + NUM_USERS_PER_TEAM - 1) {
        userSql += ';'
        userTeamSql += ';'
      } else {
        userSql += ',\n'
        userTeamSql += ',\n'
      }
    }
  
    var fixturesSQL = 'BEGIN;\n'
    fixturesSQL += userSql + '\n'
    fixturesSQL += userTeamSql + '\n'
    fixturesSQL += 'COMMIT;\n'
  
    client.query(fixturesSQL, function (err, result) {
      if (err) {
        callback(err)
      } else {
        console.log(chalk.green('success inserting users ' + startId +
          ' to ' + (startId + NUM_USERS_PER_TEAM - 1)))
        if (teamId < NUM_TEAMS + TEAM_START_ID - 1) {
          loadUsers(id, orgId, teamId + 1, callback)
        } else {
          loadVolumeDataEnd(callback)
        }
      }
    })
  }
docs: insert users and add them to teams in batches