将字符和数字数据分离

创建测试用表：

CREATE OR REPLACE VIEW v AS
SELECT 'A1' AS c FROM DUAL
UNION ALL
SELECT '12B' AS c FROM DUAL;
SELECT * FROM v;

SQL代码如下：

SELECT REGEXP_REPLACE(c, '[0-9]', '') AS c1,
       REGEXP_REPLACE(c, '[^0-9]', '') AS c2
  FROM v;

执行结果如下：