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1、字符串截取: right("strabcd",4) # 截取右边4位 left("strabcd",4) # 截取左边4位 2、字符串拼接: concat("str1","str2",...) # 拼接多个字符串 3、字符串与数字之间相互转换 字符串转数字:cast("1234" as sige 阅读全文
posted @ 2022-04-28 20:17
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参考1、https://blog.csdn.net/qq_52360069/article/details/124187136?spm=1001.2100.3001.7377&utm_medium=distribute.pc_feed_blog_category.none-task-blog-cla 阅读全文
posted @ 2022-04-28 10:29
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https://blog.csdn.net/shi_hong_fei_hei/article/details/118113639?spm=1001.2100.3001.7377&utm_medium=distribute.pc_feed_blog_category.none-task-blog-cl 阅读全文
posted @ 2022-04-28 10:04
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