Hi. We have a table in our data warehouse which keeps
info about calls made. This table has a child table 
with some detailed information about parts of the
call. There may be any number of "parts" within a call
(1 to many) and every part has a status. 

MY developer wants to add a string field to the parent
table which will concatinate all the statuses for
all the parts within this call. For example if
a call has 4 parts and their statuses are "A","B","A"
and "F", the value of that field will be "ABFA". Then
the developer will be able to query smalle parent
table instead of a large child table in order to see
how many calls had at least one part with status "A"
or statuses "A" and "F" etc by using a INSTR (or
SUBSTR) command.

Would it be better (from performance/CPU standpoint)
to add several separate fields: STATUS_A_CNT,
STATUS_B_CNT (the list of status codes is fairly
static) instead? There is something about this string
that rubs me the wrong way, but I can't put my finger
on it.

Any thoughts?

thank you

Gene

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