Teradata：将varchar转换为十进制/浮点数

Question

我需要将13,5之类的varchar值转换为数字。 我尝试的任何代码都返回以下代码：135,00

如何正确制作？

尝试了以下内容：

cast('13,5' as float)
cast('13,5' as decimal(18,2))
cast(oreplace('13,5',',','.') as float)
cast(oreplace('13,5',',','.') as decimal(18,2))
cast('13,5' as number)
cast(oreplace('13,5',',','.') as number)