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How to find the port for MS SQL Server 2008?
... the service and now the "Server is listening on" shows up in the ERRORLOG file
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Regex - Does not contain certain Characters
...racters: the shell interprets some of them. Look to see if you now have a file named ']+$' in your directory. Put the entire regex inside single quotes to make it work.
– Ned Batchelder
Sep 11 '17 at 23:50
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Stop Mongoose from creating _id property for sub-document array items
If you have subdocument arrays, Mongoose automatically creates ids for each one. Example:
6 Answers
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Grouped LIMIT in PostgreSQL: show the first N rows for each group?
...)
SELECT
*
FROM (
SELECT
ROW_NUMBER() OVER (PARTITION BY section_id ORDER BY name) AS r,
t.*
FROM
xxx t) x
WHERE
x.r <= 2;
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How do I drop a foreign key constraint only if it exists in sql server?
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The more simple solution is provided in Eric Isaacs's answer. However, it will find constraints on any table. If you want to target a foreign key constraint on a specific table, use this:
IF EXISTS (SELECT *
FROM sys.foreign_keys
WHERE object_id = O...
How do SQL EXISTS statements work?
...ists' a row in the Order table that meets the condition Suppliers.supplier_id (this comes from Outer query current 'row') = Orders.supplier_id. When you find the first matching row, stop right there - the WHERE EXISTS has been satisfied.
The magic link between the outer query and the subquery lies...
Set theme for a Fragment
...e. The fragment still has the same theme that is specified in the manifest file.
– Giorgi
Mar 20 '13 at 14:25
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In CSS what is the difference between “.” and “#” when declaring a set of styles?
...yles for an element and what are the semantics that come into play when deciding which one to use?
9 Answers
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VC MFC工具栏(CToolBar)控件 - C/C++ - 清泛网 - 专注C/C++及内核技术
...nd* pParentWnd,//按钮的父窗口(按钮属于哪个窗口）
UINT nID//指明按钮控件ID号
);
这个函数的第二个参数dwStyle是按钮控件的样式，也就是在可视化添加按钮控件时，右击按钮控件，选择属性，之后会弹出一个对话框，这个对...
Can table columns with a Foreign Key be NULL?
I have a table which has several ID columns to other tables.
7 Answers
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