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當我運行的phpmyadmin那麼下面的查詢它給了我下面的錯誤SQL查詢不運行
INSERT INTO `infrastructure_support_info`(`s_no`, `student_no`, `books_availability`, `basic_requirements`, `technological_support`, `study_material`, `resource_availability`, `cleaniliness_of_class`)
VALUES ('', '', '$availabilityOfBooks', '$basicRequirements', '$technologicalSupport', '$photocopyOfStudyMaterial', '$availabilityOfOtherResources', '$cleanlinessOfClass')
#1452 - 不能添加或更新子行,外鍵約束失敗(
feedback_system_db
infrastructure_support_info
。 ,約束user_std_no
外鍵(student_no
)參考文獻user_master
(student_no
))