What is the best (Group of string or number)
Dear all,I want to know if group by on a column which is number is better or if the group by on a column which is varchar2 is better?
AHUOO: I create a table dept_test with 1 million records and grouped by deptno and dname and checked the cost.
I found no difference.
Receive your answer on this one.
Kind regards
Madhu K.
My PM said that oracle will not work if we group by on a column that is the data type instead of the number data type character and I doubt that.
You're right & PM believe in urban legends.
Asks MP to provide a reproducible test that supports his position & shows the problem with the VARCHAR2 data type.
Tags: Database
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===
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#############################################################
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