output arguments from a sqlplus

Shell Programming and Scripting
1

Hi.

I need to output a 4 queries result into another application using
result=`sqlplus -s ${3}/${4}@${2} << EOF
...
query1
query2
query3
query4
....
echo "$metrics1"

and returning those individual values into another app.
(query1 and 3compute one value, query 2 and 4 compute 4 values. All of them floats)
For a normal situation I output the values this way,
server_avail1=`echo $tt1| awk '{print $1}'`; server_term1=`echo $tt1| awk '{print $7}'`;
server_menu_avail=`echo $tt1| awk '{print $2}'`; server_menu_avail=`echo $tt1| awk '{print $3}'`; ...............
the problem I'm facing is sometimes some values of a query are returned NULL and thus aren't echoed, which breaks my static outputting (and if the 1st value of the 2nd query goes NULL, the values that goes into server_menu_avail is the 2nd val of the 2nd query, etc)

To gain a little control, I tried to force substituting those NULLs with a 'NULL' word
echo "$scfmetrics1" | sed 's/^$/NULL/g'
but it's getting an extra NULL between the result of query1 and 2, and query 3 and 4.
Eg: 0 NULL NULL 100 NULL 100 100 NULL 0 NULL NULL 88.46 NULL 99.12 100

Any idea how to skin this rabbit?

2

HI Zen,

It would be better if you can modify the sql queries out put which are null to a default value so you will not face any problem at the time of echoing it.

regards,
Sanjay

3

And the easiest way is to tell sqlplus to do the work:

result=`sqlplus -s ${3}/${4}@${2} << EOF
set null "NULL"
...
query1
query2
query3
query4
....
echo "$metrics1"
4

Hi.
I started using a SQL decode to replace null occurences with 'n/a' but ended up using Cero sugestion.
Didn't remember about using set null.
This workaround will have to do.

Thanks!