执行如下sQL语句: SELECT DISTINCT价格FROM图书 WHERE价格一(SELECT MAX(价格)FROM图书) INTO ARRAY arr 则?arr[2]的结果是( )。
A.
23.00
B.
32.00
C.
F.
D.
系统报错
拍照语音搜题,微信中搜索"皮皮学"使用
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参考解析:
知识点:
皮皮学刷刷变学霸
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