從MySQL獲取記錄

我有2個表格：progress和student。 progress具有字段semester，idStudent，hasFirstAttestation和hasSecondAttestation。我需要從progress那些idStudent哪些學生的最長學期和兩個認證= 0。這裏是我的查詢的例子，但它不工作：從MySQL獲取記錄

SELECT progress.idStudent FROM monitoring.progress 
WHERE hasFirstAttestation = 0 AND hasSecondAttestation = 0 
AND semester = 
    (SELECT MAX(`semester`) 
     FROM monitoring.progress WHERE progress.idStudent = student.idStudent);

來源

2013-06-12 Eugene

*** **什麼*在您的查詢中不起作用？ – Kermit

用「IN」取代最後一個「AND」 – FredTheWebGuy

刪除Max中的''這是MAX（學期）不是MAX（'學期'） –

我想你忘了提及連接表在FROM子句中

SELECT idStudent 
FROM monitoring.progress 
WHERE hasFirstAttestation = 0 AND hasSecondAttestation = 0 
AND semester = (SELECT MAX(semester) FROM monitoring.progress, monitoring.student 
WHERE progress.idStudent = student.idStudent);

來源

2013-06-12 22:21:04

哦，謝謝你，它有效。 – Eugene

很高興幫助:-) –

SELECT progress.idstudent 
FROM monitoring.progress 
WHERE hasfirstattestation = 0 
    AND hassecondattestation = 0 
    AND semester = (SELECT Max(`semester`) 
        FROM monitoring.progress,monitoring.student 
        WHERE progress.idstudent = student.idstudent);

來源

2013-06-12 22:26:35 user2480204

從MySQL獲取記錄

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