查询命令为: SELECT COUNT(*) AS 总人数,SUM(cj) AS 成绩总和, MAX(cj) AS 最高成绩, MIN(cj) AS 最低成绩, AVG(cj) AS 平均成绩 FROM sc;
拍照语音搜题,微信中搜索"皮皮学"使用
参考答案:
参考解析:
知识点:
皮皮学刷刷变学霸
举一反三
【简答题】用完整的句子回答下列问题。 1. Can you play the violin? _____________________________________________________________________ 2. Do you like English or maths? Why? __________________________________________________...
【简答题】听下面的独白,用完整的句子回答下列问题。本段独白读两遍。 1. How many students were there in the general course? ________________________________________________________________ 2. What did the speaker join last school year? ____...
【简答题】用完整的句子回答下列问题。 1. Where are bananas cheaper? 2. Where is tuna more expensive? 3.Where is oil cheaper? 4.Where is cereal more expensive? 5.Where is jelly cheaper?