确定列值字符串是否以数字开头

Question

我有一个表Questions，其中包含Description列。它的列值如下：

This is First Heading, 
1 This is Subheading one, 
1.2 This is subheading Question
This is Second heading
2 This is subheading Two.
2.1 This is Subheading Question1

如何为每一行确定其列值是否以数字0-9开头？

是否有任何SQL Server 2008+功能？

Answer 1

SELECT CASE WHEN ISNUMERIC(SUBSTRING(LTRIM(Description), 1, 1)) = 1 
         THEN 'yes' 
         ELSE 'no' 
       END AS StartsWithNumber
FROM Questions 

• ISNUMERIC
• SUBSTRING

Answer 2

SELECT * FROM Questions WHERE Description LIKE '[0-9]%'

Answer 3

您可以使用以下查询。首先从左侧移除额外的空格并获得第一个左侧角色。如果此查询不是数字，则返回0，否则返回1.

Select ISNUMERIC(Left(Ltrim('1 This is Subheading'),1)) As Number

Answer 4

select true where cast(substring('1 This is Subheading', 1, 1) as int) between 0 AND 9

Answer 5

从TABLE_NAME中选择*，其中（YourColName如'0％'或YourColName如'1％'或YourColName如'2％'或YourColName如'3％'或YourColName如'4％'或YourColName如'4％'或YourColName如'5％'或YourColName（如“ 6％”）或YourColName（如“ 7％”）或YourColName（如“ 8％”）或YourColName（如“ 9％”））