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What are the uses for Cross Join?
...oss join being very practical if you were given 2 sets of id's (perhaps in csv format), one set would contain the employee ids and the other would contain task ids. The idea is that you have a M2M table for EmployeeTask. You could use the cross join to assign every given task to every given employee...
SQL exclude a column using SELECT * [except columnA] FROM tableA?
...
If you drag from Object Explorer the Columns node for a table, it puts a CSV list of columns in the Query Window for you which achieves one of your goals
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Mac SQLite editor [closed]
...ty to load sqlite extensions.
SQLite 2 Compatibility.
Exporting options to CSV, JSON, XML and MySQL.
Importing from CSV, JSON or XML.
Column reordering.
Full screen support.
There is a seven day trial available via the website. If you purchase via our website, use the promo code STACK25 to save ...
How to find the Windows version from the PowerShell command line
...ws versions use systeminfo. Powershell wrapper:
PS C:\> systeminfo /fo csv | ConvertFrom-Csv | select OS*, System*, Hotfix* | Format-List
OS Name : Microsoft Windows 7 Enterprise
OS Version : 6.1.7601 Service Pack 1 Build 7601
OS Manufacturer : Microsoft Corporation
OS...
How to check if a process is running via a batch script
...ere's how I've worked it out:
tasklist /FI "IMAGENAME eq notepad.exe" /FO CSV > search.log
FOR /F %%A IN (search.log) DO IF %%~zA EQU 0 GOTO end
start notepad.exe
:end
del search.log
The above will open Notepad if it is not already running.
Edit: Note that this won't find applications hid...
Log all queries in mysql
...ediumtext NOT NULL,
`thread_id` bigint(21) unsigned NOT NULL
) ENGINE=CSV DEFAULT CHARSET=utf8 COMMENT='Slow log'
CREATE TABLE `general_log` (
`event_time` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP
ON UPDATE CURRENT_TIMESTAMP,
`user_host` mediumtext NOT NU...
Windows启动过程 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...护两部分:
1.系统启动代码 (共有446 bytes)
2.分区表入口(16 bytes colored entries in the bottom)
3、根据系统代码，我们可以找到系统所有的分区，并找到系统启动分区。如果分区表入口的第一个字节值为0x80，那么可以确认这就...
js实现ReplaceAll全部替换 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...替换，而JS 并没有提供replaceAll这样的方法，但使用正则表可以达成Replace 的效果。正则表达式：
str.replace(/word/g,"newWord")
g 的意义是：执行全局匹配（查找所有匹配而非在找到第一个匹配后停止）。
以上写法有个类同的写法...
重访切尔诺贝利城：落满灰尘的洋娃娃 - life组图 - 清泛网 - 专注C/C++及内核技术
...是历史上最严重的核电事故，也是首例被国际核事件分级表评为第七级事件的特大事故(目前为止第二例为2011年3月11日发生于日本福岛县的福岛第一核电站事故)。
【解决】Linux mysql如何重置root密码？ - 更多技术 - 清泛网 - 专注C/C++及内核技术
...MySQL服务器：
sudo systemctl stop mysql
4. 略过grant授权表启动mysql/MariaDB服务
启用--skip-grant-tables选项后，任何人都可以在没有密码和所有权限的情况下连接到数据库服务器：
mysqld_safe --skip-grant-tables &
上面命令末尾的＆...