檔案 1
Client ID,USER ID,DH SERV, ...
,abs,2022-04-24, ...
,btg,2022-04-24, ...
檔案 2
abs,124235235
dsg,262356527
如果第一個檔案的第二列 = 第二個檔案的第一列，則將第二個檔案的第二列添加到第一列 1 檔案中。
我需要得到：
Client ID,USER ID,DH SERV, ...
124235235,abs,2022-04-24, ...
,btg,2022-04-24, ...
我怎樣才能做到這一點？
這是我的嘗試，但我不是很明白
#!/bin/bash
#awk -F, 'FNR==NR{a[$1]=$0;next} ($1 in a){print $2,a[$1]}' mgcom_Deloviye_Linii_RU_conve_2022-04-24.csv wamfactory_6100.csv > test
#awk -F, 'NR==FNR{a[FNR]=$1; next} {$2 == a[FNR] ? a[FNR]","$0 : $0}' mgcom_Deloviye_Linii_RU_conve_2022-04-24.csv wamfactory_6100.csv > test
#awk -F, 'NR==FNR{a[FNR]=$1; next} {$2 == a[FNR] ? a[FNR]","$0 : $0}' wamfactory_6100.csv mgcom_Deloviye_Linii_RU_conve_2022-04-24.csv > test
#awk -F, '{print FILENAME, NR, FNR, a[FNR]=$2,"||", b[NR]=$1}' mgcom_Deloviye_Linii_RU_conve_2022-04-24.csv wamfactory_6100.csv > test
#Work
#awk -F, 'NR==FNR{A[$2]; next}$1 in A' mgcom_Deloviye_Linii_RU_conve_2022-04-24.csv wamfactory_6100.csv > test
#awk -F, 'NR==FNR{A[NR]=$1; next}($2 in A) {print A[NR]}' wamfactory_6100.csv mgcom_Deloviye_Linii_RU_conve_2022-04-24.csv> test
#awk -F, 'NR==FNR{A[$2]=$2; next}$1 in A{print A[$2]}' mgcom_Deloviye_Linii_RU_conve_2022-04-24.csv wamfactory_6100.csv > test
#awk -F, 'FNR==NR{A[$1]=$1; next}$2 in A{print A[$1]}' mgcom_Deloviye_Linii_RU_conve_2022-04-24.csv wamfactory_6100.csv > test
awk -F, 'NR==FNR {arr[$1]=$2 $1; next}
{print arr[$1]","$0}
' wamfactory_6100.csv mgcom_Deloviye_Linii_RU_conve_2022-04-24.csv > test
uj5u.com熱心網友回復：
這應該可以解決問題：
awk 'BEGIN{FS=OFS=","}NR==FNR{a[$1]=$2} NR!=FNR{if($2 in a){print a[$2],$2,$3,$4 }else{print $0}}' file2 file1
Client ID,USER ID,DH SERV, ...
124235235,abs,2022-04-24, ...
,btg,2022-04-24, ...
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