查询某列第一、二位是否有数字？

Question

如果我的列具有 varchar 值，例如

07SNBYDT
20NETHRR
23198BER
12837930
BEYTRETY
1245YHTY

在上面的值中，我只需要在 first 和 second 位置有数字的条目和 [=18 中的字母=]第三位位
例如：07SNBYDT

我的预期输出是

07SNBYDT
20NETHRR

Answer 1

SELECT Col
FROM Table
WHERE ASCII(SUBSTRING(Col, 0, 1)) > XX AND ASCII(SUBSTRING(Col, 0, 1)) < YY 
AND ASCII(SUBSTRING(Col, 1, 1)) > XX AND ASCII(SUBSTRING(Col, 1, 1)) < YY
AND (ASCII(SUBSTRING(Col, 2, 1)) < XX OR ASCII(SUBSTRING(Col, >, 1)) > YY)

其中 XX 是 ASCII (0) 且 YY 是 ASCII(9)

Answer 2

使用like:

select t.*
from t
where col like '[0-9][0-9][a-zA-Z]%';

Answer 3

select *
from table 
where isnumeric(substring(col,1,1)) = 1
and isnumeric(substring(col,2,1)) = 1
and substring(col,3,1) LIKE '[a-zA-Z]%'

查询某列第一、二位是否有数字？

Query to find whether first and second positions of a column has numbers?

sql

sql-server

wildcard

sql-server-2008