Awk 比较特定列的两行中的值

我想根据前一行的条件打印文件行。我想实施以下条件：

如果当前行和上一行之间的键（字段1和字段2）相同，且上一行的字段8和字段8之间的差值大于1，则打印当前行并追加差值

输入文件：

47329,39785,2,12,10,351912.50,2533105.56,170.93,1
47329,39785,3,6,7,351912.82,2533105.07,170.89,1
47329,39785,2,12,28,351912.53,2533118.81,172.91,1
47329,39785,3,6,20,351913.03,2533117.41,170.93,1
47329,39797,2,12,10,352063.14,2533117.84,170.66,1
47329,39797,3,6,7,352064.11,2533119.32,170.64,1
47329,39797,2,12,28,352062.77,2533104.67,173.63,1
47329,39797,3,6,20,352063.50,2533107.10,170.69,1

47329,39785,2,12,28,351912.53,2533118.81,172.91,1,1.98
47329,39797,2,12,28,352062.77,2533104.67,173.63,1,2.94

awk -F, 'NR%2{ab = $1 FS $2} ab == ob && $8 - O8 > 1; {ob = ab; O8 = $8}'

预期输出文件：

47329,39785,2,12,10,351912.50,2533105.56,170.93,1
47329,39785,3,6,7,351912.82,2533105.07,170.89,1
47329,39785,2,12,28,351912.53,2533118.81,172.91,1
47329,39785,3,6,20,351913.03,2533117.41,170.93,1
47329,39797,2,12,10,352063.14,2533117.84,170.66,1
47329,39797,3,6,7,352064.11,2533119.32,170.64,1
47329,39797,2,12,28,352062.77,2533104.67,173.63,1
47329,39797,3,6,20,352063.50,2533107.10,170.69,1

47329,39785,2,12,28,351912.53,2533118.81,172.91,1,1.98
47329,39797,2,12,28,352062.77,2533104.67,173.63,1,2.94

awk -F, 'NR%2{ab = $1 FS $2} ab == ob && $8 - O8 > 1; {ob = ab; O8 = $8}'

第3行和第4行具有相同的键（

4732939785

），字段8中的值之差为

172.91-170.93=1.98

，因此我们打印第4行。第6行和第7行的推理相同

尝试：

47329,39785,2,12,10,351912.50,2533105.56,170.93,1
47329,39785,3,6,7,351912.82,2533105.07,170.89,1
47329,39785,2,12,28,351912.53,2533118.81,172.91,1
47329,39785,3,6,20,351913.03,2533117.41,170.93,1
47329,39797,2,12,10,352063.14,2533117.84,170.66,1
47329,39797,3,6,7,352064.11,2533119.32,170.64,1
47329,39797,2,12,28,352062.77,2533104.67,173.63,1
47329,39797,3,6,20,352063.50,2533107.10,170.69,1

47329,39785,2,12,28,351912.53,2533118.81,172.91,1,1.98
47329,39797,2,12,28,352062.77,2533104.67,173.63,1,2.94

awk -F, 'NR%2{ab = $1 FS $2} ab == ob && $8 - O8 > 1; {ob = ab; O8 = $8}'

---

我提出了这个脚本，在gawk v5.0.0上进行了测试

BEGIN{
    FS=","
}
{
    if (NR == 1)
    {
        key1 = $1
        key2 = $2
        field = $8
        # when on first record, there's nothing to compare with
        next
    }
    if ($1 == key1)
    {
        if ($2 == key2)
        {
            if ($8 - field > 1)
            {
                print $0, $8-field
                # uncomment following line to print line match number
                # print "("NR")",$0, $8-field
            }
        }
    }
    # assign for next iteration
    key1 = $1
    key2 = $2
    field = $8
}

对您的输入进行了测试，发现：

$ awk -f script.awk test.txt
47329,39785,2,12,28,351912.53,2533118.81,172.91,1 2.02
47329,39797,2,12,28,352062.77,2533104.67,173.63,1 2.99

---

匹配第3行和第7行。

预期输出是什么？你能告诉我确切的数字吗？我还是不明白你的意思。您每第二行提到4行（即比较记录2和记录4），但打印记录3（在

4732939785

的情况下）。。。这很令人困惑。你能告诉我们你想比较这4行的内容吗，以及你想打印这4行的内容吗？这个问题也和你之前问的问题相同…这个问题看起来也很相似：

BEGIN{FS=OFS=“，”}（k==1fs$2）和（$8-f8>1）{print$0，$8-f8}{k=$1fs$2；f8=$8}

@OXXO，如果代码很好，解决了你的答案，请考虑接受我的答案。阅读