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Database ValuesYou can use the SELECT statement to have the Oracle assign values to a variable. ForEach and every item in the select list, there must be a matching, type-compatible variable in the INTO list. An illustration is as shown below:DECLAREmy_empno emp.empno%TYPE;my_ename emp.ename%TYPE;wages NUMBER(7,2);BEGIN...SELECT ename, sal + commINTO last_name, wages FROM empWHERE empno = emp_id;Though, you cannot select column values into the Boolean variable.
Assignments in pl/sql The Variables and constants are initialized every time a block or subprogram is entered. By default, the variables are initialized to NULL. Therefore, unle
Updating Variables For assignment, SQL uses the key word SET, as in SET X = X + 1 (read as "set X equal to X+1") rather than X: = X + 1 as found in many computer languages.
Variable Declaration - SQL SQL's support for variables is very similar to Tutorial D's, except that the syntax for creating persistent variables-base tables-is quite differen
Collections: The collection is an ordered group of elements, all of similar type (for illustration, the grades for a class of students). Each element has an exclusive subsc
COMMIT Statement The COMMIT statement explicitly makes everlasting changes to the database during the present transaction. The Changes made to the database are not considered e
FOR-LOOP While the number of iterations through a WHILE loop is unknown till the loop completes, then the number of iterations through a FOR loop is known before the loop is ent
Implicit Cursor Attributes The Implicit cursor attributes returns the information about the execution of an INSERT, DELETE, UPDATE, or SELECT INTO statement. The cursor attribu
The Package Specification The package specifications contain the public declarations. The scopes of these declarations are local to your database representation and global to t
Cursors The Oracle uses work areas to execute the SQL statements and to store process information. A PL/SQL construct known as the cursor. Let's you assume name a work area and
i NEED THE QURIES TO SOME OF THE PROBLEMS USING plsql
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