Tracking Forums, Newsgroups, Maling Lists
Home Scripts Tutorials Tracker Forums
  Advanced Search
  HOME    TRACKER    MYSQL


SuperbHosting.net have generously sponsored dedicated servers to ensure a reliable and scalable dedicated hosting solution for BigResource.com.





Sequence Substitute


I have a problem about create sequence number which can be reset after MAXVALUE has been assigned. In the older version of mysql i can use "create sequence", but in the recent version i can't do that anymore. All i know in mysql ver 5 is "Auto_increment" which cannot be reset number without delete or truncate table.




View Complete Forum Thread with Replies

Related Forum Messages:
Substitute For The Except Statement?
I have a question. I have two tables, offers, and offer history. I want to grab all offers in the offer table that do not appear in the offer history table. (related by offer id)

do you guys have any idea how I could do this? In regular sql I could use the except statement but mysql doesn't have that.

View Replies !
Using Joins To Substitute For A Subquery
I was knocking my head on this subquery syntax for an hour trying to figure out why it's returning a syntax error:

SELECT productid, product
FROM products
WHERE productid NOT IN
(SELECT productid
FROM order_details
WHERE orderid=824790);

Then, quite suddenly, I discovered that the system I'm trying to make it work on is running MySql 3.23.58 with no chance of upgrading to a more reasonably recent version.

I know that it should be possible to do the same query using joins, thereby avoiding the subquery altogether, but that's one aspect of SQL that I've never really delved into and I'm not sure how to structure it.

Can somebody please suggest a query syntax equivalent to the above without using the NOT IN?

View Replies !
Disrupted Sequence
Another brainteaser:

CREATE TABLE IF NOT EXISTS `test` (
`id` INT(11) unsigned NOT NULL auto_increment,
`cid` VARCHAR(10) NOT NULL,
`item` VARCHAR(10) NOT NULL,
`val` INT(11) NOT NULL,
`dt` datetime NOT NULL default '0000-00-00 00:00:00',
PRIMARY KEY (`id`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=1

In the above example table I need to find the first 5 highest values of val that break the sequential set of values. In other words: say I have values 49,48,45,44,43,40,39,37,36,34 of val in my table, with 49 being the highest value of val (need to sorted first, because values may randomly be dispersed in my table), then I want to get 47,46,42,41,38 as the query result.

View Replies !
Create A Sequence?
I am creating an application that will contain three tables that need to share the same sequence. Upon digging through the docs, I do not see how I could do this.

Could someone give me some guidance into this?

Also, As I read the docs, when I am creating tables, there is something about an InnoDB? Sorry to be confused, but I am not sure how to begin creating my database, nor tables without this knowledge.

View Replies !
CREATE SEQUENCE ?
Tracing some examples in a book from Apress,
for some reason they go for Oracle in this book -
not my cup of tea, especially not when I am sitting on
a vista-terminal. Enough of my complaing.

How do I create a sequence in mysql ?

This is the example I am stuck with:

CREATE SEQUENCE SEQ_ID_GEN INCREMENT BY 1 START WITH 100 MINVALUE 1 CACHE 50 ;

How do I write that sentence in mysql ?

View Replies !
Sequence Creation
I am not able to create a sequence in MySql.. But its giving error.

Can any one pls tell me how can i do that?

View Replies !
Sequence Generation
I was wondering if there was something close to CREATE SEQUENCE in MaxDB for standard MySQL.

I'm thinking of just doing a table/stored procedure and calling it a day, but was wondering if MySQL had some other alternative.

View Replies !
What Collation Sequence?
I've just transferred a small PHP/MySQL application from a Firepages phpdev5 install to an XAMPP install, so I've got new versions of everything. I used phpMyAdmin to export and import the tables of the database. When recreating the database on my new install I selected the default collation (latin1_general_ci) but my application is now displaying ? in place of a number of characters so I guess I got it wrong. I can't see where in the old phpMyAdmin (2.3.0-rc3) to determine what collation the database uses.

View Replies !
Identity, Sequence, Serial
Does MySQL offer capability for any of the following?
- IDENTITY
- SEQUENCE
- SERIAL
Or is AUTO_INCREMENT the catch-all for the functionality of all of the above? I ask because I'm looking into Java EJB3 which describes support for any of the above (as well as AUTO_INCREMENT, so I'm not out of luck completely).

View Replies !
Re-arrange Primary Key Sequence
i am facing a problem with my application when someone deletes a record and hence its key disappears breaking the sequence e.g

1 - entry
2 - entry
(3 - deleted no mere here)
4 - entry
5 - entry


When key is not there my AJAX application fails to run properly due to not finding next id. Is there any method to re-arrange primary key values to a proper sequence when one or more numbers are missing?so that i will write a query and whenever user deletes an item i will re-arrange the primary key sequence automatically

View Replies !
Selcting Date Sequence
I am trying to return a set or rows that represent all of the days between two dates. For example, I want to select all the days between December 25th, 2005 and January 5th of 2006, and i am looking for it to return (shown here in CSV)
2005,12,25
2005,12,26
2005,12,27
2005,12,28
2005,12,29
2005,12,30
2005,12,31
2006,01,01
2006,01,02
2006,01,03
2006,01,04
2006,01,05

So, for any date, i want to select all the days in between. Any ideas?

View Replies !
Order By An (out Of Sequence) Set Of Numbers
I'm having a problem as follows:

here is a an example table (tbl_test):

id | value
----------------
1 | hello
2 | hi
1 | bye
4 | cya
where the value field is variable.

and i want to select them so they are listed as follows:

id | value
----------------
2 | hi
1 | bye
1 | hello
4 | cya

is it possible to order by and array - something like:
SELECT * FROM tbl_test WHERE 1 ORDER BY id (2,1,4)

View Replies !
How To Create A Sequence In MySQL
I am not able to create a sequence in MYSQL 5.0
Want help on creating the same.

Basically, what I am looking for is, that I should get a number greater that the last one on every call to this sequence.

In Oracle, one can simply write something like:-
CREATE SEQUENCE seq_ordermaster
increment by 1 start with 1
maxvalue 999999minvalue 1
nocache
Nocycle;
And while calling, one can use it by selecting seq_ordermaster.nextval from DUAL

Considering the fact that there is no DUAL table in MySQL, how can One write such a sequence and also, how one can get the next value on each select statement?

View Replies !
Mysql Execution Sequence
I need to retrieve the last value from a column in a mysql table, perform some actions on it, then add 1 to the original value and store a new entry.

I am worried that if multiple users access the database at the same time I will end up with duplicated 'new values'. Does mysql complete execution of a script before it allows access to another user or do I need to 'lock' the table in some way while the script executes?

View Replies !
Find The Number Of A Row In A Sequence
MySQL Code:
SELECT * FROM comments WHERE id=12345 ORDER BY rating

Is there a way to determine the position that this rows appears in the sequence?

Eg, so I can print out:

"This site is rated position x out of y"

View Replies !
Bulk Insert Of New Records In Sequence
I am looking to create a querty that searches for the max value a field
called listnum in a table called tbl_listing and then interests 25 new
records with listnum's starting 1 higher then the max value.

ie if the highest listnum is 1000 it should insert new records with a
listnum of 1001-1024. All the other fields in the table can be blank.

Is there a simple (or not so simple) query that I can run to do this?

View Replies !
How To Generate Sequence Values During Query
I have query like below:

SELECT part_no,part_nm,qty FROM tb_stok_out ORDER BY part_no

as result:

part_no part_nm qty

aaa asdfd 3
abab sdfsdf 4
abab adfdf 5

Is it possible in mysql to generate sequence number using query, so the result will be like below :

1 aaa asdfd 3
2 abab sdfsdf 4
3 abab adfdf 5
... etc

View Replies !
Change The Sequence Of Column In Table
I am using MySql Query Browser I want to change the Sequence of Column in data table
e.g.

Before : table sequence is (UserID, Name, BOD)
After : table sequence is (User ID, BOD, Name)

How can I do that?

View Replies !
Create Sequence Syntex Errors Out
I installed mysql 5 and trying to setup database. Somehow it can't create sequence. it throws generic 'check the manual that corresponds to your mysql server version......'.

I have tried just about anything nothing works.
Also tried to reinstall mysql few times--same thing.
Also tried to go through mysql 5 manual nothing is in there for sequence.
Or sequence is not supported with mysql version i have?

View Replies !
Inserting New Data Within A Structured Sequence
I'm trying to organize rows in a specific sequence. However, I also want the capability to insert new rows within that sequence and not simply append them to the end of the dataset as autosequencing would have you do. How is this accomplished?

View Replies !
Extract Data According To Preset Sequence... How?
wondering whether i can make this work...

first, i will make an array like this:

Quote:

$category_id[]="10,6,9,8,3";

then i wanna extract the information( category name, category id, and sub category into array and arrange them in the preset sequence in category_id[] above.

Quote:

$query="select * from category order by $category_id[] ";
$result="mysql_query($query) or die(mysql_error());

while ($row=mysql_fetch_assoc($result))
{
echo $row['category_id'];
echo $row['category_name'];
echo $row['subcategory'];
}

the output i wish to get is like this:

Quote:

1st result:
category id: 10
category name= the name of category 10
sub category=
sub 1 category 10
sub 2 category 10
sub 3 category 10

2nd result:
category id: 6
category name= the name of category 6
sub category=
sub 1 category 6
sub 2 category 6
sub 3 category 6

3rd result:
category id: 9
category name= the name of category 9
sub category=
sub 1 category 9
sub 2 category 9
sub 3 category 9

I'm confuse in the extraction info according to the preset sequence... can anyone please share some ideas? will this idea works?

View Replies !
Max Sequence Number In Claim Transaction Table
have a table that contains a transactional history showing how a claim amount has changed over time. Each time the claim amount is updated, a new claim sequence number is used.

The fields I have are Claim Number(CLMKYT), Claim Sequence(CLMSQT), Claim Amount(£)(OUTSTT) and Date the claim was entered/updated (EFFDTT)

I want to pull out the latest (most recent) claim amount for each claim as at any particular date.

I have the below query which I think almost gets me there, but not quite!

Code: .....

View Replies !
Generated Sequence # Based Upon Content Of Row Being Inserted
I have a table -

CREATE TABLE `sample` (
`Id` smallint(6) NOT NULL auto_increment,
`division` varchar(5) NOT NULL,
`secion` varchar(5) NOT NULL,
`div_sect_seq` smallint(6) NOT NULL default '1',
PRIMARY KEY (`Id`)
);

I'd like to write the insert statement that would generate the next div_sect_seq number based upon the value being inserted into the table.

Let's say that the table contains:

|--id--|-division-|-section-|-div_sect_seq-|
| 1 | SC | XX | 000001 |
| 2 | SC | YY | 000001 |
| 3 | SC | XX | 000002 |

I'd like to insert a row for divsion = 'SC' and section = 'XX' with the next div_sect_seq (which would be the max value of div_sec_seq + 1 on the sample table for the division and section) which should be the value of 000003.

View Replies !
Primary Key Field: Varchar(32) Versus Sequence
I got in the habit of coding primary key fields as varchar(32) that was generated by an md5() since it was a public site and I wanted to avoid people guessing record numbers (for other reasons).

Is there a performance problem with doing that?

If so, how do you tackle the same concern?

View Replies !
Ordering By Sequence Field With Empty Values
I have a sequence field in my db table that I'm using to order a list. I'm trying to ORDER BY this field, but it puts the empty values before 1 such as
empty, empty, 1, 2, 3, 4
instead of
1, 2, 3, 4, empty, empty, empty
How can I fix this?



View Replies !
Index On Long Column And Auto Sequence In Mysql
How do we create index on long columns in Mysql? we want to store the timestamp component of the data field in a long data type and be able to index on it.

View Replies !
MySQL Variables, Modifying Microsoft SQL Sequence Insert For Use In Mysql
I have the following microsoft SQL statement that inserts 25 new
records in sequence. However I am trying to modify this to work in
MySQL.

I cant seem to get the variable decleration right. I tried using
DECLARE CurVal int but that generates a mysql error. How can I modify
the code below to work under mysql? Code:

View Replies !
Ordering In Queries By Sequence Of Elements In "IN"
I need a query which delivers results in the order I have in the element sequence after "IN".

SELECT aid, cid, vid FROM table WHERE aid IN (5,7,3)

I want to see the resuts of the query submitted in the same order, it means the first row should be with aid 5, the second with aid 7 and the third with 3.

Without "ORDER BY" I get the results in sequence 3, 5, 7.

View Replies !
ORDER BY :: Sequence Order
Is it possible to ORDER BY based on the sequence order, for instance I use this Query:

SELECT * FROM Showroom WHERE Artnumber IN (52900, 52536, 52730)

the result is this:

Artnumber Price
52536 25,80
52730 1,90
52900 31,10

View Replies !

Copyright © 2005-08 www.BigResource.com, All rights reserved