删除学号为“20091001”且课程号为“C1”的选课记录,正确的命令是()。 A: DELETEFROMscoreWHERE课程号='C1'AND学号='20091001' B: DELETEFROMscoreWHERE课程号='C1'OR学号='20091001' C: DELETEFORMscoreWHERE课程号='C1'AND学号='20091001' D: DELETEscoreWHERE课程号='C1'AND学号='20091001'
删除学号为“20091001”且课程号为“C1”的选课记录,正确的命令是()。 A: DELETEFROMscoreWHERE课程号='C1'AND学号='20091001' B: DELETEFROMscoreWHERE课程号='C1'OR学号='20091001' C: DELETEFORMscoreWHERE课程号='C1'AND学号='20091001' D: DELETEscoreWHERE课程号='C1'AND学号='20091001'
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