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SELECT t FROM Teacher t join t.students s join s.books b where b.name = 'a'
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閿欒鍐欐硶錛?/p>
SELECT t FROM teacher t where t.students.books.name = 'a'
鍏跺疄閬撶悊鏄緢鏄劇劧鐨?t.students鏄竴涓猄et,閭ｄ箞榪欎釜Set鎬庝箞鍙兘鏈塨ooks榪欐牱鐨勫睘鎬у憿?鍚岀悊books.name涔熶笉瀵?鎵浠ヤ嬌鐢ㄨ〃闂磋繛鎺ュ茍緇欏嚭鍒悕t.students s,姝ゆ椂鐨勫璞鎵嶆湁books灞炴?鎵浠ュ彲浠ュ啓s.books b,鏈鍚庝嬌鐢╞.name闄愬埗鏌ヨb.name = 'a'.
鍙﹀涓縐嶅啓娉曪細
SELECT t FROM Teacher t,Student s,Book b where s.id in elements(t.students) and b.id in elements(s.books)
榪欑鏂規(guī)硶娌℃湁鍑洪敊!涓嶈繃榪欑鏂瑰紡瑕佺敤瀛愭煡璇?
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