Oracle Query - Get only strings in the select field

问题

Maybe this sounds a little bit crazy, but I need to come up with a query to retrieve only letters out of an alphanumeric field.

For example:

TABLE
1234ADD
3901AC
1812OPA
82711AUU

RESULTS EXPECTED
ADD
AC
OPA
AUU

Thank you!

回答1:

Looks like you only want to remove numbers. You can use REGEXP_REPLACE for that in 10g or 11g:

SELECT REGEXP_REPLACE( your_column, '[0-9]*', '' ) FROM your_table;

回答2:

SELECT  REGEXP_REPLACE('1234ADD 3901AC 1812OPA 82711AUU', '[0-9]', '')
FROM    dual

回答3:

Try

SELECT TRANSLATE('1234ADD 3901AC 1812OPA 82711AUU', 'A1234567890', 'A') FROM dual;

and in general see: http://www.psoug.org/reference/translate_replace.html

来源：https://stackoverflow.com/questions/2375426/oracle-query-get-only-strings-in-the-select-field