UNIX Command to Match columns from two csv files

UNIX for Beginners Q & A
1

I am joining two CSV files based on 'Server_Name' column, 1st column of first file and 2nd column of second file.
If matches, output 1st and 2nd column from first file, 3rd,4th,5th,6th columns from second file.

I am expecting output CSV file as below.

Could you please send me help me with command, I am trying below command, something is not working. Please help

awk -F, 'BEGIN {FS = OFS=","} NR==FNR {h[$2] = $1; next} $1  {print h[$1],$1,$2,$3,$4,$5}' ServerInfo.csv ConfigFormat.csv  > outfile.csv

File1 : ServerInfo.csv

Server_Name,Temp_Space,Temp_Space_Used,RAM_Memory,RAM_Memory_Available
LONDON,7.9G,3%,47G,25G
JAPAN,7.9G,4%,47G,28G
KENYA,7.9G,2%,47G,21G
POLAND,7.9G,4%,47G,25G

File2: ConfigFormat.csv

REGION,Server_Name,Temp_Space,Temp_Space_Used,RAM_Memory,RAM_Memory_Available
DEV,LONDON,,,,
TEST,JAPAN,,,,
PREPROD,KENYA,,,,
PROD,POLAND,,,,

Output File expected

REGION,Server_Name,Temp_Space,Temp_Space_Used,RAM_Memory,RAM_Memory_Available
DEV,LONDON,7.9G,3%,47G,25G
TEST,JAPAN,7.9G,4%,47G,28G
PREPROD,KENYA,7.9G,2%,47G,21G
PROD,POLAND,7.9G,4%,47G,25G

Thank you,
Anand

2

thank you

3 
awk -F, 'NR==FNR {h[$1]=$0;next} h[$2] {print $1, h[$2]}' ServerInfo.csv OFS=, ConfigFormat.csv > outfile.csv
4

Thank you,
I am getting empty output file.

5

Any other commands can we get output? Please help

6

Did you consider the join command, made for exactly this case? Like

join -1 1 -2 2 -t, ServerInfo.csv ConfigFormat.csv
7

Both input CSV files contain column names in first row. I tried join command, getting below error

join: file 2 is not in sorted order
join: file 1 is not in sorted order