Bagaimana cara memeriksa apakah string berisi angka

Menggunakan ekspresi reguler :

SELECT *
FROM test
WHERE REGEXP_LIKE(testcol, '[[:digit:]]');

Tidak menggunakan ekspresi reguler:

SELECT *
FROM test
WHERE testcol LIKE '%0%'
    OR testcol LIKE '%1%'
    OR testcol LIKE '%2%'
    OR testcol LIKE '%3%'
    OR testcol LIKE '%4%'
    OR testcol LIKE '%5%'
    OR testcol LIKE '%6%'
    OR testcol LIKE '%7%'
    OR testcol LIKE '%8%'
    OR testcol LIKE '%9%'