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      1. SQL 错误 1630:函数 SUBSTRING 不存在.. 是吧?

        SQL Error 1630: Function SUBSTRING does not exist.. huh?(SQL 错误 1630:函数 SUBSTRING 不存在.. 是吧?)
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                  本文介绍了SQL 错误 1630:函数 SUBSTRING 不存在.. 是吧?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着跟版网的小编来一起学习吧!

                  问题描述

                  没错.所以我在 MySQL 数据库中创建了一个存储过程,它恰好使用了 SUBSTRING.

                  Right. So I've created a stored procedure in a MySQL DB which happens to use SUBSTRING.

                  通过查询运行该过程给了我:

                  Running the procedure via a query gives me:

                  SQL 错误 1630:函数 mydatabase.SUBSTRING 不存在

                  SQL Error 1630: Function mydatabase.SUBSTRING does not exist

                  请原谅?

                  推荐答案

                  Substring的方法调用后第一个括号前有空格吗?

                  Is there a space after the method call to Substring before the first parenthesis?

                  它出现在第 40 行:

                  It appears on Line 40:

                   IF i > 1 AND j > 1 AND (s1_char = SUBSTRING (s2, j - 1, 1))
                  

                  即确保

                  select substring(CustomerName, 1, 4) AS CustName from MyTable;
                  

                  代替:

                  select substring (CustomerName, 1, 4) AS CustName from MyTable;
                  

                  这篇关于SQL 错误 1630:函数 SUBSTRING 不存在.. 是吧?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持跟版网!

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