comp.databases.mysql Google Group

Re: like in mysql

u...@example.net (monkeys paw) — Sun, 11 Nov 2009 07:14:31 UT

yea, i've been using '*' since the late 80's, i've been
diverted by the multiplicity of languages and syntaxes
over the years

Re: key not used oncolum of type double...why?

pwieg...@gmail.com (profke) — Sun, 11 Nov 2009 05:11:34 UT

Dear Captain,
Sorry, but sarcasm does not really work, in cases like this....
I'm sorry, but where did I suggest I knew better than you? And I did
not refuse to give any information. Of course, I should have given the
FULL tabledef and expain in the first post, and by any next question I
have, I will. I did not think it would matter, after me trying to

Re: Starting to design new PHP/MySQL feature in NewEco, requesting brainstorm help

gor...@hammy.burditt.org (Gordon Burditt) — Sun, 11 Nov 2009 03:39:37 UT

One problem I have here is: Why should someone trust labor credits
on your site as opposed to other forms of currency, like Bernie
Madoff investments, Enron stock, promises of future benefits from
the Social Security system, S&H Green Stamps (anyone remember those?),
airline miles, or 1 contest entry in the Publisher's Clearinghouse

Re: like in mysql

jstuck...@attglobal.net (Jerry Stuckle) — Sun, 11 Nov 2009 00:05:14 UT

At least since the late 70's :)

Re: like in mysql

paul_laut...@yahoo.com (Captain Paralytic) — Sat, 11 Nov 2009 23:23:16 UT

"now"? It has been for as long as I have coded SQL!

Re: like in mysql

u...@example.net (monkeys paw) — Sat, 11 Nov 2009 22:49:17 UT

Ah yes, thanks. So '%' is wildcard now.

Re: like in mysql

jstuck...@attglobal.net (Jerry Stuckle) — Sat, 11 Nov 2009 20:56:49 UT

Because asterisk is not a wildcard in SQL.
Check the documentation for the LIKE clause.

like in mysql

u...@example.net (monkeys paw) — Sat, 11 Nov 2009 20:52:31 UT

Assuming there are records in the bills tables where
the id field is "AK2009H45", why doesn't the following
statement work?
select * from bills where id like "AK*45";

Re: key not used oncolum of type double...why?

paul_laut...@yahoo.com (Captain Paralytic) — Sat, 11 Nov 2009 19:30:40 UT

Well that is so kind of you.
I really don't get people like you. You come here to ask the experts
and when we ask you for the necessary information, you refuse to give
it, instead suggesting that you know better than us!
If you could read the explain output properly and knew how it all
worked, you wouldn't have needed to ask here in the first place.

Re: key not used oncolum of type double...why?

jstuck...@attglobal.net (Jerry Stuckle) — Sat, 11 Nov 2009 18:27:25 UT

It is saying it is not using a key - not that possible keys is null, as
you claimed in your previous statement. These are two entirely
different things.
MySQL will not use an index if it thinks the retrieval will return a
significant portion of the table. In a case like that, going to the
index and retrieving individual rows based on the index can be slower

Re: key not used oncolum of type double...why?

pwieg...@gmail.com (profke) — Sat, 11 Nov 2009 18:08:28 UT

Well, I can give you the whole query, and explain too:
mysql> describe item;
+------------+--------------+- -----+-----+---------+-------- --------+
+------------+--------------+- -----+-----+---------+-------- --------+
+------------+--------------+- -----+-----+---------+-------- --------+
mysql> explain select * from item where lat>50;

[Resolved )Re: Ubuntu 9.04. I can't install mysql-server.

z...@aol.com (Dominique) — Sat, 11 Nov 2009 15:00:34 UT

Thank's for you.
I'd gone to [link] and my error was knone so I've
installed correctly mysql-server-5.0 with dependancies and it's all
right now
Get a good after-noon and sorry for my english,

Re: key not used oncolum of type double...why?

paul_laut...@yahoo.com (Captain Paralytic) — Sat, 11 Nov 2009 14:49:28 UT

I don't believe you. If that really is all it says then there is
something seriously wrong.

Re: key not used oncolum of type double...why?

pwieg...@gmail.com (profke) — Sat, 11 Nov 2009 14:46:00 UT

Well, it simply says: possible_keys: null
thanks for answering,
Paul

Re: key not used oncolum of type double...why?

paul_laut...@yahoo.com (Captain Paralytic) — Sat, 11 Nov 2009 14:40:19 UT

What does an explain say?