Awk: Stop 'print' adding newline and how to loop/automate - bash

Question

As it stands, I have tab delimited data laid out like this (headers added here for clarity):
EntryID GroupID Result
039848 00100 Description 1
088345 00200 Description 2
748572 00435 Description 3
884938 00200 Description 2
000392 00200 Description 3
008429 00100 Description 4
What I am trying to do is condense my data into groups. I wish to output a table with column A being groupIDs (with no duplication) and column B being a combination of all descriptions associated with that group. An example output would be:
00100 Description 1 | Description 4
00200 Description 2 | Description 2| Description 3
00435 Description 3
I've tried to write an awk command to produce one line at a time, given a Group ID as a parameter:
$ awk -F '\t' '/00100/ { print $2 '\t' $3 }' table.txt > output.txt
This works, however each hit is printed on a newline, like this
00100 Description 1
00100 Description 2
etc
I gather that this can be solved by specifying the ORS to an alternate character, or using printf rather than print, but when I try either of these
$ awk -F '\t' 'BEGIN {ORS = '\t'} /00100/ { print $2 '\t' $3 }' table.txt > output.txt
or
$ awk -F '\t' '/00100/ { printf $2 '\t' $3 }' table.txt > output.txt
Nothing actually changed in the output.
Once I get that solved, the other problem I have is that I have thousands of groups to repeat this with. I have a list of every group ID present in the data, stored in a different file, and I'd like to automate feeding that to awk for each ID.
I've tried modifying a command I've seen used to feed IDs to grep in a similar fashion, but I haven't had any luck with that either, as it just hangs:
$ for i in `$ cat groupIDs.txt`; do awk -F '\t' '/$i/ { print $2 '\t' $3 }' table.txt' >> test_results.txt ; done;
Any ideas how I can solve these issues?

Answer 1

I'm not much on awk, but you can do this with bash, sort, grep, cut and paste:
#!/bin/bash
groups=$(cut -f2 "$1" | sort -u)
for group in $groups ; do
echo -n "$group "
cut -f2- "$1" | grep "^$group" | cut -f2 | paste -d"|" -s -
done
This produces the following output:
00100 Description 1|Description 4
00200 Description 2|Description 2|Description 3
00435 Description 3
Not sure if the output delimiter has to be " | " or if "|" will do.

Answer 2

You can try this awk command:
$ awk '{i=$2;$1=""; $2="";a[i]=a[i]?a[i]" |"$0:$0}END{for (i in a) print i, a[i]} ' file
00435 Description 3
00100 Description 1 | Description 4
00200 Description 2 | Description 2 | Description 3
Or since the file is tab delimited, you can simplify it to
$ awk -F'\t' '{a[$2]=a[$2]?a[$2]" | "$3:$3}END{for (i in a) print i"\t"a[i]} ' file
00435 Description 3
00100 Description 1 | Description 4
00200 Description 2 | Description 2 | Description 3

Answer 3

$ cat tst.awk
BEGIN {
FS=OFS="\t"
split(tgtS,tmpA,/,/)
for (i in tmpA)
tgtA[tmpA[i]]
}
(!tgtS) || ($2 in tgtA) {
descs[$2] = descs[$2] sep[$2] $3
sep[$2]=" | "
}
END {
for (gid in descs)
print gid, descs[gid]
}
$
$ gawk -f tst.awk file
00435 Description 3
00100 Description 1 | Description 4
00200 Description 2 | Description 2 | Description 3
$
$ gawk -v tgtS="00100" -f tst.awk file
00100 Description 1 | Description 4
$
$ gawk -v tgtS="00100,00200" -f tst.awk file
00100 Description 1 | Description 4
00200 Description 2 | Description 2 | Description 3

Answer 4

Code:
#!/usr/bin/awk -f
BEGIN {
FS = OFS = "\t"
getline
}
{
if ($2 in a) {
a[$2] = a[$2] " | " $3
} else {
a[$2] = $3
b[i++] = $2
}
}
END {
for (j = 0; j < i; ++j) {
k = b[j]
print k, a[k]
}
}
Input:
EntryID GroupID Result
039848 00100 Description 1
088345 00200 Description 2
748572 00435 Description 3
884938 00200 Description 2
000392 00200 Description 3
008429 00100 Description 4
Output:
00100 Description 1 | Description 4
00200 Description 2 | Description 2 | Description 3
00435 Description 3