摘要:
背景 现有student表,表中的学生年龄student_age字段中的值,是通过读取excel中的信息后更新到数据库中,但是因为处理不当,导致年龄的均带有.0,如28.0实际上应该是28。我们需要将此字段的.0后缀去掉。 操作 说明:0+用来隐式转换 ,让数据库自动转换值。 SELECT 0 + 阅读全文
摘要:
The language was initially called Oak after an oak tree that stood outside Gosling's office. Later the project went by the name Green and was finally 阅读全文