文章浏览阅读105次。1. 为了支持形如“a=b=c”的连锁形式,最好令operator=返回一个reference to *this.2. 如果类中含有用于指向堆内存的指针,那么赋值操作符就要注意自我赋值的问题,//// main.cpp// 条款10:令operator=返回一个reference to *th......
文章浏览阅读3.7w次。问题一,启动报错启动参数:sudo clickhouse-server --config-file=/etc/clickhouse-server/config.xml2020.08.20 18:49:28.189321 [ 29338 ] {} <Error> Application: DB::Exception: Effective user of the process (root) does not match the owner of the data (clickhouse......
文章浏览阅读3.7w次。问题一,启动报错启动参数:sudo clickhouse-server --config-file=/etc/clickhouse-server/config.xml2020.08.20 18:49:28.189321 [ 29338 ] {} <Error> Application: DB::Exception: Effective user of the process (root) does not match the owner of the data (clickhouse......