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How can I add comments in MySQL?
...es of commenting are supported
Hash base single line commenting using #
Select * from users ; # this will list users
Double Dash commenting using --
Select * from users ; -- this will list users
Note : Its important to have single white space just after --
3) Multi line commenting using ...
GROUP BY to combine/concat a column [duplicate]
...
SELECT
[User], Activity,
STUFF(
(SELECT DISTINCT ',' + PageURL
FROM TableName
WHERE [User] = a.[User] AND Activity = a.Activity
FOR XML PATH (''))
, 1, 1, '') AS URL...
LVN_ITEMCHANGED通知会响应多次的问题 - C/C++ - 清泛网 - 专注C/C++及内核技术
... 0x0008
#define LVIS_FOCUSED 0x0001
#define LVIS_SELECTED 0x0002
// 在CListCtrl派生类中响应LVN_ITEMCHANGED消息
void CNewListCtrl::OnItemchanged(NMHDR* pNMHDR, LRESULT* pResult)
{
NMLISTVIEW* pNMListView = (NMLISTVIEW*)pNMHDR;
// TODO: Add your c...
SQL中使用update inner join和delete inner join；Oracle delete join替代...
...
下面是Oracle的：
Sql代码
DELETE TABLE1 where KHID exists ( select KHID from table2 where FWDWID=8)
Sql代码
DELETE TABLE1 where exists ( select 1 from table2 where and table1.khid=table2.khid and FWDWID=8);
Oracle的delete与join如何使用
delete from A where sid i...
Oracle 分组后取每组第一条数据 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
...据Oracle 分组后取每组第一条数据的SQL如下，亲测有效：SELECT * FROM (SELECT ROW_NUMBER() OVER(PARTITION BY T field1, T Oracle 分组后取每组第一条数据的SQL如下，亲测有效：
SELECT *
FROM (SELECT ROW_NUMBER() OVER(PARTITION BY T.field1, T.field2 ORDER...
c++11 Return value optimization or move? [duplicate]
...e object to be copied is designated by an lvalue, overload resolution to
select the constructor for the copy is first performed as if the object were designated by an rvalue. If overload
resolution fails, or if the type of the first parameter of the selected constructor is not an rvalue referenc...
How to run iPhone emulator WITHOUT starting Xcode?
...s an icon for the simulator in the dock area. Right-click on that icon and select Options - Keep in Dock.
– RenniePet
Mar 8 '17 at 10:43
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s...
Change application's starting activity
...default or the correct one under "Launch:". Not sure why the default was deselected for me, but changing it back worked.
– zeh
Feb 1 '12 at 1:32
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How can I find all of the distinct file extensions in a folder hierarchy?
...
Powershell:
dir -recurse | select-object extension -unique
Thanks to http://kevin-berridge.blogspot.com/2007/11/windows-powershell.html
share
|
impr...
UIButton: how to center an image and a text using imageEdgeInsets and titleEdgeInsets?
...answered myself (my answer was the only one at the time). I've changed the selected answer when the author of the current selected answer focused on eliminate those magic numbers. So, in the selected answer, you can figure out what they mean.
– reinaldoluckman
...