snowflake-cloud-data-platform - 如何在雪花中连接数值和字符串值？

Question

我删除了之前的问题，因为事实证明我的问题是辩证的，但我仍然遇到同样的问题。所以，我的 SELECT 语句中有以下几行：

COUNT(*) AS "Number of Buildings",
COUNT(*)/ SUM(COUNT(*)) over ()*100 AS "Portfolio Percentage: Buildings",

我想做的是将“％”连接到数字结果的末尾。我试过了：

COUNT(*)/ SUM(COUNT(*)) over ()*100 || TO_NUMBER('%') AS "Portfolio Percentage: Buildings",

和：

TO_VARCHAR(COUNT(*)/ SUM(COUNT(*)) over ()*100) || '%' AS "Portfolio Percentage: Buildings",

基本上，我已经尝试了将数字转换为 CHAR/VARCHAR 或将“%”转换为数字的所有变体，这是我能想到的。它们总是返回相同的错误，这是以下的一些变体：

Numeric value '%' is not recognized

Answer 1

问题是TO_NUMBER('%')。

代替：

select COUNT(*)/ SUM(COUNT(*)) over ()*100 || TO_NUMBER('%') AS "Portfolio Percentage: Buildings"
from (select 1)

做

select COUNT(*)/ SUM(COUNT(*)) over ()*100 ||'%' AS "Portfolio Percentage: Buildings"
from (select 1)