The SQL GRANT command is used to grant access privileges to database objects and role authorizations. For example, the following statement grants the user username the right to SELECT tabname:
In many situations, it’s wiser to use DataReader instead of a DataSet. However, DataReader is limited due to its inability to transform data rows into a suitable holder, like DataTable.
To customize error reports in StAX applications (except fatal errors), you can configure an XMLReporter like this: XMLInputFactory XMLif=null; //get an XMLInputFactory objectXMLif=XMLInputFactory.newInstance();//setting an XMLReporterXMLif.setXMLReporter(new XMLReporter() { public void report(String
A quick way to empty a folder and all its subfolders?while keeping your directory structure intact ?is to run the DOS command DEL with additional arguments. For example, the DEL
To clone an XML document at runtime, use the StAX XMLEventReader and XMLEventWriter classes like this: //AirWings_order.xml – the original XML in this example//AirWings_order_clone.xml – the clone of AirWings_order.xmlimport javax.xml.stream.*;import
C# seems to fail in an advanced use of polymorphism, as demonstrated by the following code: class AReturn {}class BReturn : AReturn {}class A{ public virtual AReturn GetReturn() {…}}class B{
Use the following script to select a particular number of rows after a certain row in MySQL: SELECT * FROM tblDummy LIMIT 15, 30 This script returns the first 30
This tip shows you how to use the JAI API to load an image named myimage.jpg in just three lines of code: ParameterBlock parameterBlock=new ParameterBlock();parameterBlock.add(“myimage.jpg”);myimage=JAI.create(“fileload”,parameterBlock);…
The following code may seem strange at first sight: class Base{private: virtual void f() = 0;}; How can a pure virtual function be private? Will the derived class be able