如何在 Oracle SQL 中找到 col 具有特殊字符或数字（连字符、撇号和空格除外）的行

Question

I need to find rows where col have special characters or numbers (except hyphen,apostrophe and space) in Oracle SQL.

I am doing like below:

SELECT *
FROM   test
WHERE  Name_test LIKE '%[^A-Za-z _]%'

But It is not working and I also need to exclude any apostrophe. Kindly help.

Answer 1

If you need to find all rows where column have ONLY numbers and special characters (and you can specify all of required special characters):

SELECT *
FROM   test
WHERE  regexp_like(Name_test, q['^[0-9'%#@]+$]')

as you can see you just need to add your special characters after 0-9. ^ - start $ - end

About format q'[SOMETHING]' please see TEXT LITERALS here: https://docs.oracle.com/en/database/oracle/oracle-database/19/sqlrf/Literals.html#GUID-1824CBAA-6E16-4921-B2A6-112FB02248DA

If you need to find all rows where column have no alpha-characters:

SELECT *
FROM   test
WHERE  regexp_like(Name_test, '^[^a-zA-Z]*$');

or SELECT * FROM test WHERE regexp_like(Name_test, '^\W*$');

about \W - please see "Table 8-5 PERL-Influenced Operators in Oracle SQL Regular Expressions" here:

https://docs.oracle.com/database/121/ADFNS/adfns_regexp.htm#ADFNS235

Answer 2

I need to find rows where col have special characters or numbers (except hyphen, apostrophe and space [and presumably single quotes]) in Oracle SQL.

You can use double single quotes to put a single quote in:

WHERE  Name_test LIKE '%[^-A-Za-z _'']%'

However, this is not Oracle syntax. If the above works, then I would guess you are using SQL Server. In Oracle:

WHERE REGEXP_LIKE(Name_test, '[^A-Za-z _'']')