Oracle数据泵不同用户导出
Is it possible to open a pipe-based filehandle which prints to a variable in perl?
I know I can do this, ------ open(F,\">\",\\$var); print F \"something cool\"; close(F); print $var; ------[详细]
2022-12-27 14:52 分类:问答What is the fastest (to access) struct-like object in Python?
I\'m optimizing some code whose main bottleneck is running through and accessing a very large list of struct-like objects.Currently I\'m using namedtuples, for readability.But some quick benchmarking[详细]
2022-12-27 13:47 分类:问答以楼开头的成语有哪些啊??
-_- 2022-04-16 08:13 1、楼船箫鼓 【拼音】: lóu chuán xiāo gǔ 【解释】: 乘坐楼船,吹箫击鼓。楼船:有楼饰的游船。[详细]
2022-12-25 14:23 分类:问答Oracle数据泵实现不同用户导入导出表级
前言: 先认识一个单词,schema:模式。 再来了解一个概念。 当创建一个用户的时候,会同时创建一个与用户同名的schema,这个schema的官方解释是对象的集合。[详细]
2022-12-11 12:24 分类:数据库