How to use regexp_like to validate a string

Hi all

We want to validate a column value, which must be of 'a - z' and ' / '.
We try to use regexp_like for this, but it does not work.

By example, "abcd/efgh" is valid, and ' / ef - gh' is not valid.

WHERE regexp_like('abcd/efgh','[a-z]|[]')

We hope that the result is PASS, and the result is PASS, too.

WHERE regexp_like('','[a-z]|[]')

We hope that the result is NOT PASS, but the result is always PASS.?!

How can we use regexp_like to validate a string with specific characters?

Any suggestion will be appreciated.

Best regards


Connected to Oracle Database 10g Express Edition Release
Connected as hr

SQL> with data as(
  2  select 'abcd/efgh' as d from dual union all
  3  select '' as d from dual)
  4  select * from data where regexp_like(d, '^[a-z/]+$');



Kind regards

Tags: Database

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