[英]JPA - query parameter is null
@Query("select users from User users " +
"where users.id like concat('%',?1,'%') and " +
"users.name like concat('%',?2,'%') and " +
"users.telNo like concat('%',?3,'%') ")
List<User> fuzzyQueryUser(Integer id, String name, String telNo);
當第一個參數id
為null時,模糊查詢沒有結果。 如果參數為null,我希望在數據庫中有類似的條目時得到結果。 我該怎么辦? 謝謝。
@Query("select users from User users " +
"where (users.id like concat('%',?1,'%') or ?1 is null or ?1 ='')and " +
"(users.name like concat('%',?2,'%') or ?2 is null or ?2 ='') and " +
"(users.telNo like concat('%',?3,'%') or ?3 is null or ?3 ='')")
List<User> fuzzyQueryUser(String id, String name, String telNo);
像這樣
@Query("select users from User users " +
"where (users.id like concat('%',?1,'%') or ?1 is null )and " +
"(users.name like concat('%',?2,'%') or ?2 is null or ?2 ='') and " +
"(users.telNo like concat('%',?3,'%') or ?3 is null or ?3 ='')")
List<User> fuzzyQueryUser(Integer id, String name, String telNo);
只需添加另一個條件來忽略null和可選的空字符串:
@Query("select users from User users " +
"where (users.id like concat('%',?1,'%') or ?1 is null) and "
+"users.name like concat('%',?2,'%') and " +
"users.telNo like concat('%',?3,'%') ")
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