there is no USER_DOCS
record for a given USER and DOC record (FULL OUTER JOIN)?
On Sat, Mar 8, 2008 at 12:12 AM, Josh McKinley [EMAIL PROTECTED] wrote:
- Excess quoted text cut - see Original Post for more -
~|
Adobe
I'm really looking for a solution with only one query using joins. It should
be possible to do this with a couple of joins.
This query, suggested by Steve, would work well if the tables remained
small:
SELECT user_id,user_name,doc_id,doc_name FROM USERS,DOCS WHERE NOT EXISTS
( SELECT
OK, so let's just say that the where not exists option is comparable in
efficiency. I ran the query and was greeted by every row in the tables. 70K
results instead of the 60 or so I should be getting.
~|
Adobe® ColdFusion® 8
I've got three tables like this (simplified):
USERS
user_id
user_name
DOCS
doc_id
doc_name
USER_DOCS
signoff_id
user_id
doc_id
I need all user names and doc names where the combination doesn't exist in the
signoff table USER_DOCS. For example, user 12 hasn't signed of on doc 9 and
user 6
By the way, this is a MySQL DB.
~|
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