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SELECT *
FROM names
WHERE regexp_like (name , 'z') ;
-- Oracle REGEXP_LIKE example would
--retrieve all of the names that contain the letter ‘z’.
NAME
-------------------------
Lorentz
Gietz
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ALTER TABLE customers
ADD CONSTRAINT cust_email_addr
CHECK(REGEXP_LIKE(cust_email,'@'))NOVALIDATE ;
xxxxxxxxxx
select *
from users
where not regexp_like(phone_number, '^\+[0-9]{9,13}$')