, 2006 12:25:50 PM CDT
To: Joseph Alotta [EMAIL PROTECTED]
Cc: mysql@lists.mysql.com
Subject: Re: please help optimize this query
I'd start by looking at your schema.. Quite a lot of use of
varchars... I'd suggest using chars (takes more space but processes
faster).. Or even better, normalize
Greetings,
I generate this report of all the holdings by symbol, summing up over
accounts. It is taking much too long. I was wondering if I can add
an index on something to make it more efficient. The first query
gets the most recent date, the next query sums it up by symbol.
Thank
greetings,
I know this is pretty basic stuff, but I couldn't find an answer in
google.
1. I want to set the @maxdate variable, but mysql complains. What am
I doing wrong?
2. The 3rd to the last line:
and (p.value - t.amount) -1000
I wanted to say
diff -1000
but mysql
Greetings,
Thank you Dahl and Xiaobo. Here it is working for all to see. I
particularly like that it doesn't try to use a key again once it is
deleted.
Joe.
mysql use names;
Database changed
mysql create table people ( id mediumint unsigned not null
auto_increment,
- first
Greetings,
I have a bunch of names and addresses that I am adding to MySql
database. I would like to automatically assign a unique sequence
number to each person. Is there a way to do this easily?
idname
1 bob jones
2 larry smith
3 henry rogers
Thanks for you help,
