SELECT week, sum(tips) FROM mytable GROUP BY week;
[EMAIL PROTECTED] wrote:
I have a table of daily information (tips, # of deliveries, etc.).
Does anyone know of an easy way using SQL to extract all weekly sums of
a field?
Like:
week 1: sum of tips for that week
week 2: sum of tips for that
Hello,
I'm looking for a solution to write a sql query that inserts a set of data if the data
id is not present and otherwise update the set.
I have a table with id (char(8)) and value (int(8))
To make my problem clear:
There is no set with id = 20030713
insert into table values (20030713,10
Try this:
set @w = 0;
select @w := value from table where id = 20030713;
delete from table where id = 20030713;
insert into table values (20030713, @w + 20);
[EMAIL PROTECTED] wrote:
Hello,
I'm looking for a solution to write a sql query that inserts a set of data if the data id
Hi,
ID_LOGIN is an integer
Can anyone say me if this :
WHERE index1=ID_LOGIN OR index2=ID_LOGIN
must be slower than those 2 queries :
WHERE index1=ID_LOGIN
WHERE index2=ID_LOGIN
for a 20 000 rows table ?
Thanks for reading.
Abalam
--
MySQL General Mailing List
For list archives:
On Sun, 13 Jul 2003 11:03:21 +0300, Veysel Harun Sahin wrote:
SELECT week, sum(tips) FROM mytable GROUP BY week;
Sorry, I wasn't clear. I have ONLY daily data, not weekly, but I want
to output weekly data.
These are the fields I have:
date DATE NOT NULL,
hours_worked DECIMAL(5,2),
Then you can use the week function of mysql in group by clause like this:
SELECT sum(tips) FROM mytable GROUP BY WEEK(date);
This will group your records week by week then will sum each week's
tips. Also you can look at
http://www.mysql.com/doc/en/Date_and_time_functions.html for the date
and
solutions were described in that thread.
I have a table with id (char(8)) and value (int(8))
To make my problem clear:
There is no set with id = 20030713
insert into table values (20030713,10);
The next set is (20030713,20) but as a set with 20030713 is already available I
like to have
is the fact that you can:
mysql UPDATE table SET value=value+10 WHERE id='20030713';
as long as the record exists. And as long as you can check for success
or failure of your UPDATE, you can determine whether you should run an
INSERT to load an original record with this id.
--
Paul Chvostek
Hello,
I would like to know the status of the UTF8 support in MySQL 4.1.
I tried to create a table using utf8 charset, and inserting hebrew text
into it. it seems like it still treats this text as binary - for example
the length() function returns 8 on 4 chars string, or when cretting a
I have the following SQL. The source table has 8.1 million rows, and the
resulting table will have about 7.9 million rows. I know that's not much of a
decrease, but the logic is correct as I've tested it on smaller sets. The
problem is that when I run with the full set of 8 million rows, it
Henry,
The information you've posted is a good start, can you post the results of
an EXPLAIN command? That would go a long way towards finding a solution.
--Justin
On Sun, 13 Jul 2003, Henry Hank wrote:
I have the following SQL. The source table has 8.1 million rows, and the
resulting
The explain plan isn't anything I wouldn't ordinarily expect - a full table
scan:
+---+--+---+--+-+--+-+-+
| table | type | possible_keys | key | key_len | ref | rows| Extra
|
I am curious about the internal representation of VARCHARS. I cannot
find any documentation on it in the mySQL manual. Will a VARCHAR(10)
take up less space then a VARCHAR(80), even though they are variable?
Thanks in advance,
Dan
--
MySQL General Mailing List
For list archives:
I ran a search through the mySQL manual and google and could not find a
satisfactory answer. Does mySQL support the declaration of a boolean
data type? Currently I am using VARCHAR(6)s with either 'TRUE' or
'FALSE' and would like to cut down on the storage.
Thanks in advance,
Dan Anderson
--
I would like to select data from a table where the table name is located
in another table, and I am using the following query:
select t1.* from (select tbl_name from user_table where user=guy) t1;
This should return the data fom table 'tbl_name', but I only get results
from the subquery (ie. the
I would like to select data from a table where the table name is located
in another table, and I am using the following query:
select t1.* from (select tbl_name from user_table where user=guy) t1;
This should return the data from table 'tbl_name', but I only get
results from the subquery (ie.
why don't you use int(1) and set it to 0 or 1?
-yves
-Ursprngliche Nachricht-
Von: Dan Anderson [EMAIL PROTECTED]
An: [EMAIL PROTECTED]
Gesendet: Sonntag, 13. Juli 2003 18:41
Betreff: does mySQL support a boolean data type?
I ran a search through the mySQL manual and google and
On Sunday, July 13, 2003, at 12:41 PM, Dan Anderson wrote:
I ran a search through the mySQL manual and google and could not find a
satisfactory answer. Does mySQL support the declaration of a boolean
data type? Currently I am using VARCHAR(6)s with either 'TRUE' or
'FALSE' and would like to
Use unsigned tinyint(1) with 1 and 0 as values.
On 13/07/2003 19:41, Dan Anderson wrote:
I ran a search through the mySQL manual and google and could not find a
satisfactory answer. Does mySQL support the declaration of a boolean
data type? Currently I am using VARCHAR(6)s with either 'TRUE'
why don't you use int(1) and set it to 0 or 1?
Storage space is an issue because I am designing a very large database
for a client. Every byte I save per row will translate into many many
megs. So if all I need is a single bit for true or false I want to get
as close to that single bit as
Are you trying to do this within a programming language? I use similar
queries using PHP and have no problem. Although I would write my query
like:
SELECT tbl_name FROM user_table WHERE user = 'guy';
And then use the result to run a select, update, insert, or whatever
-Dan
On Sun, 2003-07-13
You can use BIT or BOOL, but these are currently just synonyms for
TINYINT(1). Still your best bet though.
The manual says under new features planned for 5.1: Optimise BIT type to
take 1 bit (now BIT takes 1 char)
- Original Message -
From: Dan Anderson [EMAIL PROTECTED]
To: [EMAIL
int(1) takes up 4 bytes worth of space, and just displays 1 character.
BIT or TINYINT(1) take up 1 byte.
- Original Message -
From: [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Sunday, July 13, 2003 6:05 PM
Subject: Re: does mySQL support a boolean data type?
why don't you use int(1)
ehm, why do i say INT(1) then, and not just INT?
but one could also take a 1 char type and perform some AND and OR on that one by hand.
it's not really fast but it's possible right now. and it should be possible to convert
the table later (for version 5.1 maybe) and with a little abstraction in
Presumably if you don't specify a display size it defaults to the maximum.
I'm just quoting from the manual, have a look at 6.2 Column Types
- Original Message -
From: [EMAIL PROTECTED]
To: Phil Bitis [EMAIL PROTECTED]; [EMAIL PROTECTED]
Sent: Sunday, July 13, 2003 7:40 PM
Subject: Re:
If storage space is really a big motivator, you can roll your own by using
something like unsigned integers, each of which will accomodate 32 bit fields.
Then use bitmasks to read/write the values. Probably makes writing WHERE
clauses a bit tedious, and doing joins on the bit fields may not be
In the last episode (Jul 13), Dan Anderson said:
I am curious about the internal representation of VARCHARS. I cannot
find any documentation on it in the mySQL manual. Will a VARCHAR(10)
take up less space then a VARCHAR(80), even though they are variable?
It's documented at least twice in
trying to add a FK to an existing table, to see table
structures, alter table syntax and error refer to
http://sourcepost.sytes.net/sourceview.aspx?source_id=6332
=
David L. Corsaut
[EMAIL PROTECTED]
mobile: 206.790.0969
__
Do you Yahoo!?
SBC Yahoo! DSL - Now
Probably it did not start at all.
check if it started.
ps -ax|grep mysql
John Nichel wrote:
Oliver Etzel - GoodnGo.COM (R) wrote:
Hello all,
after Installing mysql I started the mysql daemon.. The I tried to log
in to my mysql database and got the message could not find mysql.sock
in
David,
- Original Message -
From: David Corsaut [EMAIL PROTECTED]
Newsgroups: mailing.database.mysql
Sent: Sunday, July 13, 2003 11:07 PM
Subject: Adding FK via Alter Table not working
trying to add a FK to an existing table, to see table
structures, alter table syntax and error
Nicholas,
- Original Message -
From: Nicholas Elliott [EMAIL PROTECTED]
Newsgroups: mailing.database.mysql
Sent: Friday, July 11, 2003 6:04 PM
Subject: InnoDB Performance issues
--=_NextPart_000_003B_01C3479C.77A1AB60
Content-Type: text/plain;
charset=iso-8859-1
Steve,
- Original Message -
From: Steve [EMAIL PROTECTED]
Newsgroups: mailing.database.mysql
Sent: Thursday, July 10, 2003 11:24 PM
Subject: Re: innodb file won't shrink
I found the following thread:
Bruce,
- Original Message -
From: bruce [EMAIL PROTECTED]
Newsgroups: mailing.database.mysql
Sent: Sunday, July 13, 2003 11:32 PM
Subject: MySql Rollback in PHP within a website
Hey...
I have a question. I need to be able to try to perform a database update,
but if it doesn't
Sorry,
- Original Message -
From: Heikki Tuuri [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Tuesday, July 08, 2003 12:39 AM
Subject: Re: InnoDb and fragmentation
Mike,
...
So how do I defrag the InnoDb file space so I can get it back
up to speed?
The simplest method is
ALTER
Hey...
I have a question. I need to be able to try to perform a database update,
but if it doesn't succeed, I need to be able to rollback the changes, and to
inform the user that the changes didn't succeed.
I've looked at the MySql site, and can see somewhat how the Commit/RollBack
functions
On Saturday 12 July 2003 22:22, Dan Nelson wrote:
In the last episode (Jul 12), Tim Fountain said:
This may be a silly question but what can be done to stop
load-intensive MySQL processes taking down a server? Things like
adding fulltext indexes to very large tables, or selects on very
On Sunday 13 July 2003 19:16, Sagi Bashari wrote:
Use unsigned tinyint(1) with 1 and 0 as values.
On 13/07/2003 19:41, Dan Anderson wrote:
I ran a search through the mySQL manual and google and could not find a
satisfactory answer. Does mySQL support the declaration of a boolean
data type?
After I downloaded the Ver 5 Dev tree how do I get it active. I tried the Windows
stuff on the Mysql site with no luck.
I run WIndows/ME and have Ver3.23 running. When I try to use the instructions for
Compile it fails looking for .c pgms
Actually, Live and Learn is correct. Life and Learn makes no sense.
Edward Dudlik
Becoming Digital
www.becomingdigital.com
Did I help you? Want to show your thanks?
www.amazon.com/o/registry/EGDXEBBWTYUU
- Original Message -
From: Nils Valentin [EMAIL PROTECTED]
To: Bruce Feist
Hi,
This is OFF-TOPIC but can you tell me how I can 'dedicate' a chunk
of memory to MySQL Query Caching? I have 512MB but as listed below, a lot of
those are being used as 'cached and Inact_dirty'
Whatever is Inact_dirty anyway?
MemTotal: 513988 kB
MemFree:166468 kB
Hi...
I have a questiona problem actually!!!
I'm trying to figure out how to determine the descendents of a given child
would be. The table defs are...:
CREATE TABLE ItemTbl
(
id int(5) NOT NULL auto_increment,
itemnamevarchar(25) NOT NULL default '',
Hiya. I take it you mean ancestors rather than descendants.
For finding descendants I've been using tables like this:
ID ParentIDLineage
1000/100
101100/100/101
102100/100/102
103101/100/101/103
104103
Firstly you need to index home_location_id in the customer table, then it
should work.
On 14/7/03 4:06 AM, David Corsaut [EMAIL PROTECTED] wrote:
trying to add a FK to an existing table, to see table
structures, alter table syntax and error refer to
Hey all,
I was trying to compile, test and install MySQL-4.0.13. Compile went
well and it was configured with --with--innodb --enable-assembler
--prefix=/usr and nothing else. However when I make test it goes through
to create, passes that then stops for 30 seconds and give the error that
the
Hi Edward;
Thanks fot the reply.
I have a double error then ;-)
First mistaken whats actually correct and then even trying to fix it ;-)
Never mind.
Best regards
Nils Valentin
Tokyo/Japan
2003 7 14 10:10Becoming Digital :
Actually, Live and Learn is correct. Life and Learn makes no sense.
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