Oracle中判斷一個字串是否為全數字
阿新 • • 發佈：2019-02-20
1、regexp_like
SELECT * FROM (
SELECT 'ABC#$&' AS data from dual UNION ALL
SELECT 'AB123' AS data from dual UNION ALL
SELECT '456' AS data from dual UNION ALL
SELECT '7' AS data from dual
) WHERE regexp_like(data,'^[0-9]+$')
查詢結果
456
7
說明
regexp_like(data,'^[0-9]+$') 純數字。 亦可用 regexp_like(data, '^[[:digit:]]+$'); regexp_like(data,'^[0-9]{3}$') 3位純數字
2、translate
SELECT * FROM (
SELECT 'ABC#$&' AS data from dual UNION ALL
SELECT 'AB123' AS data from dual UNION ALL
SELECT '456' AS data from dual UNION ALL
SELECT '7' AS data from dual
) WHERE translate(data, 'a0123456789', 'a') is NULL
查詢結果
456
7