stackoverflows

SQL | Views Views in SQL are kind of virtual tables. A view also has rows and columns as they are in a real table in the database. We can create a view by selecting fields from one or more tables present in the database. A View can either have all the rows of a table or specific rows based on certain condition. In this article we will learn about creating , deleting and updating Views. Sample Tables : StudentDetails CREATE TABLE FOLLOWING FIELDS STD_ID, NAME,ADDRESS StudentMarks CREATE TABLE FOLLOWING FIELDS id , NAME,MARKS, AGE CREATING VIEWS We can create View using CREATE VIEW statement. A View can be created from a single table or multiple tables. Syntax : CREATE VIEW view_name AS SELECT column1, column2..... FROM table_name WHERE condition; view_name : Name for the View table_name : Name of the t...

Java Basics On Days 1 and 2, you learned about Java programming in very broad terms—what a Java program and an executable look like, and how to create simple classes. For the remainder of this week, you’re going to get down to details and deal with the specifics of what the Java language looks like. Today, you won’t define any classes or objects or worry about how any of them communicate inside a Java program. Rather, you’ll draw closer and examine simple Java statements—the basic things you can do in Java within a method definition such as main(). Today you’ll learn about the following: n Java statements and expressions n Variables and data types n Comments n Literals n Arithmetic n Comparisons n Logical operators Technical Note: Java looks a lot like C++, and—by extension—like C. Much of the syntax will be very familiar to you if you are used to working in these languages. If you are an experienced C or C++ programmer, you may want to pay special attention to the Technical Notes (...

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