行列转换在数据库，开发语言中都是一个津津乐道的话题，今天来简单演示一个使用sed所作的特殊行列转换。
日志的内容如下：
append data from MIG_TEST.MO1_MEMO_EXT_2 to MIG_TEST.MO1_MEMO

1936470 rows created.
Elapsed: 00:01:01.53
Commit complete.
Elapsed: 00:00:00.03
append data from MIG_TEST.MO1_MEMO_EXT_3 to MIG_TEST.MO1_MEMO

873897 rows created.
Elapsed: 00:00:22.67
Commit complete.
Elapsed: 00:00:00.02
append data from MIG_TEST.MO1_MEMO_EXT_4 to MIG_TEST.MO1_MEMO

1702297 rows created.
Elapsed: 00:00:57.67
Commit complete.
Elapsed: 00:00:00.04
append data from MIG_TEST.MO1_MEMO_EXT_5 to MIG_TEST.MO1_MEMO

1280364 rows created.
Elapsed: 00:00:52.77

现在想把特定的一些行转列，实现类似如下的效果。 这样数据条数，插入时间等就一目了然了，可以在此基础上成为报告，便于查看状态和监控。
append data from MIG_TEST.MO1_MEMO_EXT_1 to MIG_TEST.MO1_MEMO 1661924 rows created. Elapsed: 00:01:05.55
append data from MIG_TEST.MO1_MEMO_EXT_2 to MIG_TEST.MO1_MEMO 1936470 rows created. Elapsed: 00:01:01.53
append data from MIG_TEST.MO1_MEMO_EXT_3 to MIG_TEST.MO1_MEMO 873897 rows created. Elapsed: 00:00:22.67

这个时候可以使用sed来做处理，完成特定的行列转换。
首先删除多余的空行
 sed -e '/^$/d'   append_details.log
然后在此基础上根据”append data from“来做第一次行列转换。
sed  '/append data from/{N;N; s/\n/ /}'
这样，格式化后的内容就类似下面的形式。
append data from MIG_TEST.MO1_MEMO_EXT_11 to MIG_TEST.MO1_MEMO 2083618 rows created.
Elapsed: 00:01:24.92
Commit complete.
Elapsed: 00:00:00.08
append data from MIG_TEST.MO1_MEMO_EXT_12 to MIG_TEST.MO1_MEMO 976772 rows created.
Elapsed: 00:00:32.67
Commit complete.
Elapsed: 00:00:00.05
append data from MIG_TEST.MO1_MEMO_EXT_13 to MIG_TEST.MO1_MEMO 851574 rows created.
Elapsed: 00:00:30.06
Commit complete.
Elapsed: 00:00:00.02
然后再做一次行列转换，按照关键字“rows created" 来做行列转换
最后的输入类似下面。
append data from MIG_TEST.MO1_MEMO_EXT_1 to MIG_TEST.MO1_MEMO 1661924 rows created. Elapsed: 00:01:05.55
append data from MIG_TEST.MO1_MEMO_EXT_2 to MIG_TEST.MO1_MEMO 1936470 rows created. Elapsed: 00:01:01.53
append data from MIG_TEST.MO1_MEMO_EXT_3 to MIG_TEST.MO1_MEMO 873897 rows created. Elapsed: 00:00:22.67
append data from MIG_TEST.MO1_MEMO_EXT_4 to MIG_TEST.MO1_MEMO 1702297 rows created. Elapsed: 00:00:57.67
append data from MIG_TEST.MO1_MEMO_EXT_5 to MIG_TEST.MO1_MEMO 1280364 rows created. Elapsed: 00:00:52.77

完整的命令如下：
 sed -e '/^$/d'   append_details.log|sed  '/append data from/{N;N; s/\n/ /}' |sed '/rows created/{N;s/\n/ / }'|grep 'append'