权限说明ALL代表所有权限（相反与 USAGE）ALTER代表允许使用来改变表结构，ALTER TABLE 同时也需要有 CREATE 和 INSE
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2024-03-10 16:12:33
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如果不加tools:ignore="ProtectedPermissions"会给出一些系统权限的危险提示。使用方法
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2022-09-27 10:41:30
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目录文档用途
详细信息
文档用途了解usage权限的使用与管理 详细信息 场景1 ：只授权usage on schema 权限 session 1：--创建test用户,并将highgo模式赋予test用户。 highgo=# create user test with password 'password';CREATE ROLEhighgo=# grant USAGE on SCH
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2021-01-29 21:06:44
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Every so often people ask me the question how should they estimate memory consumption by MySQL Server in given configuration. What is the formula they could use. 经常有人问我配置MySQL时该如何估算内存的消耗。那么该使用什么公式来计算
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2009-05-27 15:56:17
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#!/usr/bin/python#*coding:utf-8*names=['jack','tom','sherry']forlinnames:print(l)forxinrange(10):print(x
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2018-01-16 14:17:53
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Just as in mathematics, you can eliminate parentheses from SQL expressions. The following two querent:select * from employees where NOT (ename = 'BLAKE' AND init = 'R')sel
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2023-05-24 14:16:57
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#!/usr/bin/python#*coding:utf-8*age=int(input("inputyourage:"))ifage>=50:print('old')elifage>=25:print('adult')elifage>=6:print('teenager')else:print('ki
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2018-01-16 14:04:35
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MySQL, Incorrect usage of UNION and ORDER BY 错误解释：MySQL中，当你在使用UNION合并查询结果的时候，如果直接在最后使
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2024-10-10 12:18:24
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Q.How do I open and edit multiple files under VIM text editor running
under Ubuntu Linux / UNIX operating systems to improve my productivity?A. Vim offers multiple file
editing with the help of window
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2014-08-28 12:16:18
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EventBus is a publish/subscribe event bus optimized for Android.so make it simple,just think EventBus as a framework that allow different compoents to communicate,usually a subscribe register a certai
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2016-09-22 01:09:58
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修改文件内容sed -i '/pattern/s/old/new/g' <file> #先筛选出满足pattern的字符串, 然后将该字符串钟的old替换为new修改多个文件名for file in *.c # 列出需要修改文件名的文件
do
nfile=`echo $file | sed 's/file/ma/g'`
mv $file $nfile
don
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2021-03-15 22:47:55
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dpkg -i package.deb安装包dpkg -r package删除包dpkg -P package删除包（包括配置文件）dpkg -L package列出与该包关联的文件dpkg -l package显示该包的版本dpkg –unpack package.deb解开 deb 包的内容dpkg -S keyword搜索所属的包内容dpkg -l列出当前已安装的包dpkg -c...
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2009-12-20 22:21:00
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ScheduledThreadPoolExecutor Usage
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2019-03-18 11:03:00
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1 使用kthread_create创建线程： struct task_struct *kthread_create(int (*threadfn)(void *data),
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2023-06-19 09:50:05
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impdb loads the dmp file from ORACLE_HOME/admin/ORACLE_SID/dpdump/test.dump, so before we run impdb, we put it into this folder.
oracle@laptop-ubuntu:/opt/oracle/admin/orcl/dpdump$ impdp sy
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2009-08-31 17:55:39
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#!/bin/bashread-p"pleaseinputanumber:"acase"$a"in1)echo"Thenumis1";;2)echo"Thenumis2";;[3-9])echo"Thenumis$a";;*)echo"pleaseinput[0-9]int"ex
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2018-01-22 11:54:07
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#!/bin/basharray=(12345)for((i=0;i<${#array[*]};i++));doecho${array[$i]}done
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2018-02-07 08:50:37
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