Visit The New, Modern Unix Linux Community


Merging multiple lines into single line based on one column

 
Thread Tools Search this Thread
Top Forums UNIX for Beginners Questions & Answers Merging multiple lines into single line based on one column
# 1  
Merging multiple lines into single line based on one column

I Want to merge multiple lines based on the 1st field and keep into single record.

SRC File:

Code:
AAA_POC_DB.TAB1
AAA_POC_DB.TAB2
AAA_POC_DB.TAB3
AAA_POC_DB.TAB4
BBB_POC_DB.TAB1
BBB_POC_DB.TAB2
CCC_POC_DB.TAB6

OUTPUT
-----------------
Code:
'AAA_POC_DB','TAB1','TAB2','TAB3','TAB4'
'BBB_POC_DB','TAB1','TAB2'
'CCC_POC_DB','TAB6'



Moderator's Comments:
Mod Comment Please use CODE tags as required by forum rules!

Last edited by RudiC; 12-08-2016 at 01:48 PM.. Reason: Added CODE tags.
# 2  
Hello raju2016,

Could you please try following and let me know if this helps you.
Code:
awk -F"." -vs1="'" 'FNR==NR{A[$1]=A[$1]?A[$1] OFS s1 $NF s1:s1 $NF s1;next} A[$1]{print s1 $1 s1 OFS A[$1];delete A[$1]}' OFS=,   Input_file  Input_file

Output will be as follows.
Code:
'AAA_POC_DB','TAB1','TAB2','TAB3','TAB4'
'BBB_POC_DB','TAB1','TAB2'
'CCC_POC_DB','TAB6'

Thanks,
R. Singh
These 2 Users Gave Thanks to RavinderSingh13 For This Post:
# 3  
Try also
Code:
awk -F. -vFMT="'%s'" '$1 != LAST {printf QRS FMT, $1; QRS = ORS; LAST = $1} {printf "," FMT, $2} END {printf ORS}' file
'AAA_POC_DB','TAB1','TAB2','TAB3','TAB4'
'BBB_POC_DB','TAB1','TAB2'
'CCC_POC_DB','TAB6'

These 2 Users Gave Thanks to RudiC For This Post:
# 4  
Thanks RudiC and ravinder....its working
# 5  
Hi,

RudiC & Ravinder solutions are Smilie

Here is another try Smilie
Code:
while IFS=. read a b;
do
if [ "$x" != "$a" ]; then 
x=$a
printf "\n'%s','%s'" "$x" "$b"
else 
printf ",'%s'" "$b"
fi
done < file

This gives following output for given input in post #1 ( one empty line in the beginning !) .
Quote:

'AAA_POC_DB','TAB1','TAB2','TAB3','TAB4'
'BBB_POC_DB','TAB1','TAB2'
'CCC_POC_DB','TAB6'
Code:
#!/bin/bash

while IFS=. read a b;
do
if [ "$x" == "$a" ]; then 
printf ",'%s'" "$b"
else 
x=$a
printf "'%s','%s'" "$x" "$b"
fi
done < file | sed -e 's/'"'"''"'"'/'"'"'\n'"'"'/g'

Gives the desired output as per post #1.
# 6  
While the sed hack can be generalized for Unix
Code:
sed -e 's/'\'\''/'\''\
'\''/g'

it is actually not needed:
Code:
x=""; while IFS=. read a b
do
  if [ "$x" != "$a" ]; then 
    printf "${x:+\n}'%s','%s'" "$a" "$b"
    x=$a
  else 
    printf ",'%s'" "$b"
  fi
done < file

This User Gave Thanks to MadeInGermany For This Post:
# 7  
Hi Ravinder/Rudy,

Could you please explain what exactly this AWK is doing

Previous Thread | Next Thread
Thread Tools Search this Thread
Search this Thread:
Advanced Search

Test Your Knowledge in Computers #684
Difficulty: Medium
According to both NetMarketShare and WikiMedia, Safari claimed a mobile market share of over 40% in 2019.
True or False?

10 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

Multiple lines to single line

I have code as below # create temporary table `temp4277`(key(waybill_no)) select waybill_no,concat_ws('',card_type,card_series_no) cardinfo from rfid_temp_ticket where waybill_no='4277' group by... (4 Replies)
Discussion started by: kaushik02018
4 Replies

2. Shell Programming and Scripting

Merging two tables including multiple ocurrence of column identifiers and unique lines

I would like to merge two tables based on column 1: File 1: 1 today 1 green 2 tomorrow 3 red File 2: 1 a lot 1 sometimes 2 at work 2 at home 2 sometimes 3 new 4 a lot 5 sometimes 6 at work (4 Replies)
Discussion started by: BSP
4 Replies

3. Shell Programming and Scripting

Returning multiple outputs of a single line based on previous repeated lines

Hello, I am trying to return a time multiple times from a file that has varying output just before the time instance, i.e. cat jumped cat jumped cat jumped time = 1.1 cat jumped cat jumped time = 1.2 cat jumped cat jumped time = 1.3 In this case i would like to output a time.txt... (6 Replies)
Discussion started by: ryddner
6 Replies

4. UNIX for Dummies Questions & Answers

Merging lines based on one column

Hi, I have a file which I'd like to merge lines based on duplicates in one column while keeping the info for other columns. Let me simplify it by an example: File ESR1 ANASTROZOLE NA FDA_approved ESR1 CISPLATIN NA FDA_approved ESR1 DANAZOL agonist NA ESR1 EXEMESTANE NA FDA_approved... (3 Replies)
Discussion started by: JJ001
3 Replies

5. Shell Programming and Scripting

merging multiple lines into single line

Hi, 1. Each message starts with date 2. There is blank line between each message 3. Each message does not contain same number of lines. Any help in merging multiple lines in each message to a single line is much appreciated. AIX: Korn Shell Error log file looks like below. ... (5 Replies)
Discussion started by: bala123
5 Replies

6. Shell Programming and Scripting

Awk multiple lines with 4th column on to a single line

This is related to one of my previous post.. I have huge file currently I am using loop to read file and checking each line to build this single record, its taking much much time to parse those records.. I thought there should be a way to do this in awk or sed. I found this code in this forum... (7 Replies)
Discussion started by: Vasan
7 Replies

7. Shell Programming and Scripting

Multiple lines in a single column to be merged as a single line for a record

Hi, I have a requirement with, No~Dt~Notes 1~2011/08/1~"aaa bbb ccc ddd eee fff ggg hhh" Single column alone got splitted into multiple lines. I require the output as No~Dt~Notes 1~2011/08/1~"aaa<>bbb<>ccc<>ddd<>eee<>fff<>ggg<>hhh" mean to say those new lines to be... (1 Reply)
Discussion started by: Bhuvaneswari
1 Replies

8. Shell Programming and Scripting

Split single file into multiple files based on the number in the column

Dear All, I would like to split a file of the following format into multiple files based on the number in the 6th column (numbers 1, 2, 3...): ATOM 1 N GLY A 1 -3.198 27.537 -5.958 1.00 0.00 N ATOM 2 CA GLY A 1 -2.199 28.399 -6.617 1.00 0.00 ... (3 Replies)
Discussion started by: tomasl
3 Replies

9. Shell Programming and Scripting

merge lines into single line based on symbol \t

The symbols are \t and \t\t (note: not tab) If the line starts with \t merge them into a single line upto symbol \t\t \t\t to end and start new line I able to join in a single line but not ending at \t\t and I completely confused help would be appreciated:b::D Input \ta tab XXXXXXXXXX \te... (5 Replies)
Discussion started by: repinementer
5 Replies

10. Shell Programming and Scripting

Awk multiple lines with 3rd column onto a single line?

I have a H U G E file with over 1million entries in it. Looks something like this: USER0001|DEVICE001|VAR1 USER0001|DEVICE001|VAR2 USER0001|DEVICE001|VAR3 USER0001|DEVICE001|VAR4 USER0001|DEVICE001|VAR5 USER0001|DEVICE001|VAR6 USER0001|DEVICE002|VAR1 USER0001|DEVICE002|VAR2... (4 Replies)
Discussion started by: SoMoney
4 Replies

Featured Tech Videos