ClickHouse奇技淫巧系列之SQL查文件

history | awk '{print $1"\t"$2}' | clickhouse-client \
--query="SELECT shell, count() AS c FROM history \
GROUP BY shell ORDER BY c DESC limit 10 " \
--external --file=- --name=history \
--structure='id UInt16, shell String'  -h  127.0.0.1  
ls      390
cd      243
clickhouse-client       173
du      67
vim     57
htop    42
cat     28
history 27
tailf   25
mysql   24



参考资料
https://www.cnblogs.com/zqr99/p/9939418.html
https://www.jianshu.com/p/2e49edbeb1ef
https://www.jianshu.com/p/8875dede8db7?clicktime=1578014751