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test for field existence
Name: camin Date: May 10, 2004 at 13:48:56 Pacific OS: SunOS 5.8 Generic_108528- CPU/Ram: unknown
Comment:
Hi,
Can someone please help! How do test to see if a field exist? The script is very long too long to paste in here: bugval is a ClearDDts command its just getting the field value from an sql database.
The conditions are that the field exist and has a value of "no"
man27=`$home/bin/bugval -i $i est27` if test $man27 = no && test X"$man27" != X then ma27=`$home/bin/bugval -i $i other3` echo $i >>$tempdir/w_$ma27.txt echo $ma27 >>$tempdir/w_man.txt fi thanks for any help. camin
Name: Jim Boothe Date: May 11, 2004 at 10:14:03 Pacific
Reply:
Since man27 might be null, you need to enclose it in quotes to avoid a script error:
if test "$man27" = no && test X"$man27" != X
Your test of man27 for not null is fine, except that it is redundant here. When man27 contains your required value of "no", that means also that it cannot possibly be null.
Other ways to check for non-null:
if test "$man27" != ""
if test -n "$man27"
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Response Number 2
Name: camin Date: May 12, 2004 at 09:11:18 Pacific
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