ot;>news:006601c21bd8$4b1fdb20$[EMAIL PROTECTED]...
> SQL JOINs...
>
> http://www.mysql.com/doc/J/O/JOIN.html
>
> -Mike
>
> - Original Message -
> From: "Noah Spitzer-Williams" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Mon
hey guys,
im trying to figure out a query that i can return rows from more than
one table at a time. for example, i have two identical tables in structure
and i want to return rows from both using one query. maybe this will help:
select * from table1 and table2 where condition='value'
i
what's the LIKE query to see if an email address is valid?
For example, in PHP it's something like
if
(eregi("^[0-9a-z]([-_.]?[0-9a-z])*@[0-9a-z]([-.]?[0-9a-z])*\\.[a-z]{2,3}$",$
email,$check)) {
echo "valid";
}
i want to sort through rows in a db and look for invalid email addr
hey guys,
i want to show a list of rows from a table sorted by the count of
another table. the first table has a username field and so does the other
table. so i want to sort the first table by how many rows that has the
username from the other table.
so something like this although i kn
check out the mktime() function
""David W. Banks"" <[EMAIL PROTECTED]> wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> Is there some way to get the equivalent of "select TO_DAYS(NOW())"
> out of PHP without querying MySQL (or whatever.) Some formatting character
> for the date() f
if i have several rows in a table and i want some to have certain weights
what is the best way to pick a random row based on its weight?
ex of table:
idweight
1 10
25
33
420
52
therefore, since there is a total weight of 40, id 1 should be picked 25%
(10/40) of the time,
Yeah the keys would be part of the first condition of the where clause...
this table is like this:
username | siteid | bannerid | clicks | someotherstat
an update would be like: update tbl set clicks=clicks+1 where
username='something' and siteid='something' and bannerid='something'
a select w
I see,
What about if you had 3 or 4 columns that would always be unique, is there
an advantage to naming them as primary keys? does this slow inserts because
it has to check if theres a duplicate entry?
""Manuel Lemos"" <[EMAIL PROTECTED]> wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECT
what are the advantages and disadvantages of primary keys and indices?
- Noah
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