联合表MYSQL

我有一张桌子：

特布凯特兰根

我有这样的疑问：

SELECT cal.myDate as colDate,
       t.colJamMasuk,
       t.colJamKeluar,
       t.colTerlambat,
       t.colLemburPagi,
       t.colLemburSore,
       b.colKeterangan,
       c.colKeteranganID
  FROM (SELECT s.start_date + INTERVAL (tb_days.day) DAY as myDate
          FROM (SELECT DATE_ADD(MAKEDATE(2015, 31), INTERVAL (07-2) MONTH) AS start_date,
                       DATE_ADD(MAKEDATE(2015, 1), INTERVAL (07) MONTH) AS end_date) AS s
          JOIN tb_days
            ON tb_days.day < DATEDIFF(s.end_date, s.start_date)) AS cal
  LEFT JOIN tb_libur AS b
    ON b.colTanggal = cal.myDate
  LEFT JOIN tb_kehadiran AS t
    ON t.colDate >= cal.myDate AND
       t.colDate < cal.myDate + INTERVAL 1 DAY AND
       t.colUserID = 1
  ORDER BY colDate

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我想将tb_keterangan表加入我的查询。

该查询的可能重复项不可能执行。您将表别名c引用为c.ColketerAngid，但查询中没有以c作为别名的表。此外，您还必须解释连接条件应该是什么。谢谢

SELECT cal.myDate as colDate,
       t.colJamMasuk,
       t.colJamKeluar,
       t.colTerlambat,
       t.colLemburPagi,
       t.colLemburSore,
       b.colKeterangan,
       c.colKeteranganID
  FROM (SELECT s.start_date + INTERVAL (tb_days.day) DAY as myDate
          FROM (SELECT DATE_ADD(MAKEDATE(2015, 31), INTERVAL (07-2) MONTH) AS start_date,
                       DATE_ADD(MAKEDATE(2015, 1), INTERVAL (07) MONTH) AS end_date) AS s
          JOIN tb_days
            ON tb_days.day < DATEDIFF(s.end_date, s.start_date)) AS cal
  LEFT JOIN tb_libur AS b
    ON b.colTanggal = cal.myDate
  LEFT JOIN tb_kehadiran AS t
    ON t.colDate >= cal.myDate AND
       t.colDate < cal.myDate + INTERVAL 1 DAY AND
       t.colUserID = 1
  ORDER BY colDate