How to merge multiple databases in mongodb
Now there are DBA, DBB, DBC, and NewDB in an instance. How to import ABC into NewDB? The structure is the same. I tried For Insert and InsertMany, but the data was close to 500W and it stopped working after inserting a few items. And the efficiency is too low. Is there any efficient way?
PHP中文网 2017-06-21 10:11:34 0 1 809
php怎么往mysql datetime或者int插入空字符串
mysql表结构其中的字段 my_date datetime DEFAULT NULL,先看一段简单插入代码$sql = "insert into my_test(my_date) VALUES ('')";mysqli_query($dbc,$sql); 插入失败的 请问怎么往mysql datetime或者int插入空字...
天蓬老师 2017-04-10 17:56:37 0 4 270