sql - REGEXP_REPLACE to replace emails in a list except a specific domain -


i novice regular expressions. trying remove emails list not belong specific domain.

for e.g. have below list of emails:

john@yahoo.co.in , jacob@gmail.com, bob@rediff.com, lisa@abc.com, sam@gmail.com , rita@yahoo.com

i need gmail ids:

jacob@gmail.com, sam@gmail.com

please note may have spaces before comma delimiters. appreciate help!

this start you.

select *   (    select regexp_substr (str,                                   '[[:alnum:]\.\+]+@gmail.com',                                   1,                                   level)                       substr               (select ' john@yahoo.co.in , jacob.foo@gmail.com,   bob@rediff.com,lisa@abc.com, sam@gmail.com , sam.bar+stackoverflow@gmail.com, rita@yahoo.com, foobar '                               str                       dual)         connect level <= length (regexp_replace (str, '[^,]+')) + 1)  substr not null ;

put in few more examples, email checker should comply respective rfcs, @ wikipedia further knowledge them https://en.wikipedia.org/wiki/email_address

inspiration https://stackoverflow.com/a/17597049/869069


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