摘要:
now()::timestamp(0)精确到秒 加法: SELECT now()::timestamp(0) + '1 year'; --当前时间加1年 SELECT now()::timestamp(0) + '1 month'; --当前时间加一个月 SELECT now()::timestam 阅读全文
摘要:
enable_vertical_merge_algorithm = 1 vertical_merge_algorithm_min_rows_to_activate = 1 vertical_merge_algorithm_min_columns_to_activate = 1 optimize是异步 阅读全文
![](/skins/gray/images/separator.gif)