I have a table with a column name
of datatype varchar2
. How can I use check constraint on name
such that it will not accept NUMERIC VALUES AS WELL AS SPECIAL CHARACTERS in it?????
问问题
1507 次
1 回答
0
假设您使用的是 ms sql
ALTER TABLE table
ADD
CONSTRAINT column_alpha_check
CHECK
(
field like '%[^abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ]%'
)
还
在 SQL 中,您可以增强功能来做到这一点
于 2012-12-18T11:34:41.323 回答