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Add primary key to existing table
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drop constraint and recreate it
alter table Persion drop CONSTRAINT <constraint_name>
alter table Persion add primary key (persionId,Pname,PMID)
edit:
you can find the constraint name by using the query below:
select OBJECT_NAME(...
How to make a Java class that implements one interface with two generic types?
...ow that looks tome like code duplication... I encountered the same problem and found no other solution that looks clean.
– bln-tom
Jun 9 '11 at 19:42
110
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Remove an onclick listener
I have an object where the text cycles and displays status messages. When the messages change, I want the click event of the object to change to take you to the activity that the message is relating to.
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Why is auto_ptr being deprecated?
...ptr also transfers ownership, but thanks to codification of move semantics and the magic of rvalue references, it can do so considerably more naturally. It also "fits" with the rest of the standard library considerably better (though, in fairness, some of that is thanks to the rest of the library ch...
Simple conversion between java.util.Date and XMLGregorianCalendar
I'm looking for a simple method of converting between java.util.Date and javax.xml.datatype.XMLGregorianCalendar in both directions.
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Fade In Fade Out Android Animation in Java
... to have a 2 second animation of an ImageView that spends 1000ms fading in and then 1000ms fading out.
11 Answers
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iOS Safari – How to disable overscroll but allow scrollable divs to scroll normally?
I'm working on an iPad-based web app, and need to prevent overscrolling so that it seems less like a web page. I'm currently using this to freeze the viewport and disable overscroll:
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Reflecting parameter name: abuse of C# lambda expressions or syntax brilliance?
I am looking at the MvcContrib Grid component and I'm fascinated, yet at the same time repulsed, by a syntactic trick used in the Grid syntax :
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How do I hide an element when printing a web page?
... answer is not complete. You have to have two media sections. @media print and @media screen. In the print section, you place your styles for printing. In the screen screen section, you place your styles for screen printing. You can even have multiple screen sections for different resolutions. Basic...
Odd behavior when Java converts int to byte?
...t is 32 bits. A byte is 8 bits .
Most primitive types in Java are signed, and byte, short, int, and long are encoded in two's complement. (The char type is unsigned, and the concept of a sign is not applicable to boolean.)
In this number scheme the most significant bit specifies the sign of the n...