RE: Generate random, unique value...

2001-10-29 Thread Carsten H. Pedersen
> You could also do ORDER BY RAND(), which I just discovered in the DuBois > book when looking for the syntax of the RAND() function (which I haven't > used before). For a different take on retrieving random records, check out http://www.bitbybit.dk/mysqlfaq/faq.html#ch7_21_0 / Carsten -- Carst

RE: Generate random, unique value...

2001-10-29 Thread George Eric R Contr AFSPC/CVYZ
>> I'm not sure what the problem with this is? The first (unique) column is >> independent of the second (random) column. If the random column has >> duplicate values, it just means that the corrosponding first column values >> will be adjacent in the sorted table. >If you're really depending o

Re: Generate random, unique value...

2001-10-29 Thread Carl Troein
George Eric R Contr AFSPC/CVYZ writes: > I'm not sure what the problem with this is? The first (unique) column is > independent of the second (random) column. If the random column has > duplicate values, it just means that the corrosponding first column values > will be adjacent in the sorted

RE: Generate random, unique value...

2001-10-29 Thread George Eric R Contr AFSPC/CVYZ
>I can see one problem with this, which is that in the case that you >get two identical number in the second column their order will be >strongly dependent on the values in the first column. I'm not sure what the problem with this is? The first (unique) column is independent of the second (rand

Re: Generate random, unique value...

2001-10-27 Thread Carl Troein
George Eric R Contr AFSPC/CVYZ writes: > How about this: > > Create a table with two columns. The first is autoincrement, so guarenteed > unique. The second is random (but not neccesarily unique). > > Now sort this table by the second column. > The first column, read in order, should now sui

RE: Generate random, unique value...

2001-10-26 Thread George Eric R Contr AFSPC/CVYZ
serts automatically using these values. -Original Message- From: Dana Holt [mailto:[EMAIL PROTECTED]] Sent: Friday, October 26, 2001 11:00 AM To: mySQL General List (E-mail) Subject: Generate random, unique value... Can I automatically generate a random, unique, integer value in a ce

Re: Generate random, unique value...

2001-10-26 Thread Bill Adams
Kyle Hayes wrote: > On Friday 26 October 2001 10:00, Dana Holt wrote: > > Can I automatically generate a random, unique, integer value in a certain > > range when inserting data into a column using SQL? > > > > If so, how? > > Random is easy. Just find a good RNG (random number generator) somewh

Re: Generate random, unique value...

2001-10-26 Thread Kyle Hayes
On Friday 26 October 2001 10:00, Dana Holt wrote: > Can I automatically generate a random, unique, integer value in a certain > range when inserting data into a column using SQL? > > If so, how? Random is easy. Just find a good RNG (random number generator) somewhere (there are many available o

RE: Generate random, unique value...

2001-10-26 Thread Shankar Unni
Dana Holt writes: > Can I automatically generate a random, unique, integer value > in a certain range when inserting data into a column using SQL? "Random"? Like how "random"? * Math.random() random? And still unique? That's really tough.. * Or just "you don't care, but not sequential" "rando

Generate random, unique value...

2001-10-26 Thread Dana Holt
Can I automatically generate a random, unique, integer value in a certain range when inserting data into a column using SQL? If so, how? Thanks.. Dana - Before posting, please check: http://www.mysql.com/manual.php (the