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Does MySQL ignore null values on unique constraints?
... '1' for key 'x'
INSERT table1 VALUES (NULL);
INSERT table1 VALUES (NULL);
SELECT * FROM table1;
Result:
x
NULL
NULL
1
This is not true for all databases. SQL Server 2005 and older, for example, only allows a single NULL value in a column that has a unique constraint.
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Eclipse reports rendering library more recent than ADT plug-in
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In the Work with field, enter: https://dl-ssl.google.com/android/eclipse/
Select Developer Tools / Android Development Tools.
Click Next and complete the wizard.
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Configure IIS Express for external access to VS2010 project
...your IIS Express app is by clicking on the tray icon, listing all apps and selecting your. The path to the config file will be written below. My was in .vs\config
– evilkos
Oct 4 '15 at 17:33
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Adjusting the Xcode iPhone simulator scale and size [duplicate]
...teps :
Goto Window->Uncheck Show Device Bezels
Goto Window->select zoom
after doing this you can resize your simulator by dragging edges of simulator.
Pixel Accurate : Its to display your simulator in same size as Physical device pixels, if your screen size doesn't have enough re...
WCF on IIS8; *.svc handler mapping doesn't work
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Windows 8 with IIS8
Hit Windows+X
Select Programs and Features (first item on list)
Select Turn Windows Features on or off on the left
Expand .NET Framework 4.5 Advanced Services
Expand WCF Services
Enable HTTP Activation
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is it possible to update UIButton title/text programmatically?
...Interface Builder (ctrl drag from new referencing outlet to file owner and select your UIButton object)? That's usually the problem I have when I see these symptoms.
Edit: While it's not the case here, something like this can also happen if you set an attributed title to the button, then you try...
Adjusting Eclipse console size
...preference'
step 2: go'run/Debug' form lift side of preference window and select 'console'
step 3: In right side of windows increase the size of 'Console buffer size(characters)'
step 4: click ok to exit
[window -->preference -->run/Debug -->console -->Console buffer size(characters)]
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How to make UIButton's text alignment center? Using IB
...wer version of xcode (mine is xcode 6.1) we have property attributed title
Select Attributed then select the text and press centre option below
P.S. The text was not coming multiline for that I have to set the
btn.titleLabel.numberOfLines = 0
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How can I escape square brackets in a LIKE clause?
...or the characters % and _.
Here's a good article with some more examples
SELECT columns FROM table WHERE
column LIKE '%[[]SQL Server Driver]%'
-- or
SELECT columns FROM table WHERE
column LIKE '%\[SQL Server Driver]%' ESCAPE '\'
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How to dynamically create CSS class in JavaScript and apply?
...ml5 app, which will have writing on a canvas, and I want to let my user to select from a wide range of fonts to use. Rather than having a loooong css with all the font, I'm planning on creating a backend where I'll just upload the font data and whenever the program is loaded, a little call to a web...