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DB2 Datatype Determination in DB2...

I am kind of new to Db2...

Question: What are the rules that DB2 uses to determine the right datatype for a particular column for on-the-fly SQL generation?



For example...



The following code snippet:

(sum(AMT3) - sum(AMT2))/sum(AMT2) as DIFFPER is part of a bigger SQL Statement..

AMT3 and AMT2 are part of a table. DIFFPER is created on the fly...

So assuming AMT3 is an integer datatype and AMT2 is a decimal datatype then what datatype is given to column DIFFPER on the view by default?

We could cast it to format the DIFFPER column to look a certain way but what is the overall rule for DB2 datatype determination by default.
May 8 '07 #1
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