05 2022 档案
摘要:https://blog.csdn.net/johnny0316/article/details/124819932
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摘要:点击idea左上角File -> Settings -> Editor -> Inspections -> 搜索 Serialization issues ,找到 Serializable class without ‘serialVersionUID’ ->打上勾,再点击Apply->OK
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摘要:select c.*,(select count(hcus.id) from hcus where c.id=hcus.id and study_status='finished') as learnStuNum,(select count(hcus.id) from hcus where c.id
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摘要:BigDecimal percent =BigDecimal.valueOf(wosCourseVo.getLearnStuNum()*100).divide(BigDecimal.valueOf(wosCourseVo.getStudentsNum()), 0, BigDecimal.ROUND_
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