Filtering out rows which include 2 underscores

Question

I was wondering if anyone has an example of code which you can exclude data which includes 2 underscores next to each other.
Here is my query which doesn't work:
SELECT i.interface_id,
i.interface_name,
s.site_id,
s.site_name,
s.database_server_id
FROM interfaces i,
sites s,
companies c
WHERE i.site_id = s.site_id
AND s.company_id = c.company_id
AND c.company_id = :company_id
AND s.site_name NOT LIKE '%__%';
I was thinking of using the CHR() function in the where clause but can find no example of this being done.
Any help would be appreciated.
Thanks
ReedK

Answer 1

Hi Reed,
don't confuse the SQLPlus "escape", with the escape in SQL LIKE clauses.
This is the ANSI syntax for LIKE regardless whether your are using PL/SQL, SQLPlus or something else.
SELECT i.interface_id,
       i.interface_name,
       s.site_id,
       s.site_name,
       s.database_server_id
FROM   interfaces i,
       sites s,
       companies c
WHERE  i.site_id = s.site_id
AND    s.company_id = c.company_id
AND    c.company_id = :company_id
AND    s.site_name NOT LIKE '%\_\_%' escape '\';Jens