How to generate random integer numbers by using a function
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How to generate random integer numbers by... Expand / Collapse
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Posted 8/18/2008 3:24:17 AM
Junior Member

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Hi

I want to generate random integer numbers in Teradata.
In SQL, we have random function rand(), but it gives only the whole number between 0 and 1.

1. Like wise do we have any function to generate random numbers in Teradata?
2. And also similarly i want to select random records from a set of records in a table.

Does any one help me to do the above two tasks?

Thanks
Dileep


Dileep
Post #12625
Posted 8/18/2008 3:29:30 AM
Supreme Being

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Hello,

You can use following for random number:

- SELECT Random("min value", "max value"); e.g.: SELECT Random(0, 10);

For selecting random rows, you can use:

- SELECT * from Table1 Sample 10;

HTH.

Regards,

Adeel
Post #12626
Posted 8/18/2008 3:38:36 AM
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Does the min and max values include in the range??

Thanks


Dileep
Post #12630
Posted 8/18/2008 3:43:25 AM
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Yes, you could have tested it yourself as well. :)

For verification, try this several times: "SELECT Random(1, 2);"

Regards,

Adeel
Post #12631
Posted 8/18/2008 4:08:21 AM
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it's ok .... for time being i don't have the teradata sql assistant installed in my machine... i will get it soon.
can i have the syntax for creating an user defined function in teradata?
i want to include the above statements in a function and re-use that function.

Thanks



Dileep
Post #12632
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