What is control statement in PL SQL?

What is control statement in PL SQL?

PL/SQL categories of control statements are: Conditional selection statements, which run different statements for different data values. The conditional selection statements are IF and CASE . Loop statements, which run the same statements with a series of different data values.

What is control structure in PL SQL?

Control Structures in PL/SQL A condition is any variable or expression that returns a BOOLEAN value (TRUE or FALSE). The iteration structure executes a sequence of statements repeatedly as long as a condition holds true. The sequence-structure simply executes a sequence of statements in the order in which they occur.

Which is an example of a PL SQL subprogram?

Subprogram Invocations A procedure invocation is a PL/SQL statement. For example: raise_salary(employee_id, amount); A function invocation is an expression.

What are the basic control statements in PL SQL write their syntax with examples?

PL/SQL IF Statements

  • IF-THEN Statement. Syntax. IF condition. THEN. Statement;
  • IF-THEN-ELSE Statement. Syntax. IF condition. THEN. [Statements to execute when condition is TRUE]
  • IF-THEN-ELSIF statement. Syntax. IF Condition1. THEN. Statements to execute when condition1 is TRUE.
  • IF-THEN-ELS-IF-ELSE Statement. Syntax. IF condition1. THEN.

How do I run a PL SQL statement?

Text Editor

  1. Type your code in a text editor, like Notepad, Notepad+, or EditPlus, etc.
  2. Save the file with the . sql extension in the home directory.
  3. Launch the SQL*Plus command prompt from the directory where you created your PL/SQL file.
  4. Type @file_name at the SQL*Plus command prompt to execute your program.

Which one is not the flow of control statement in PL SQL block?

The GOTO statement changes the flow of control within a PL/SQL block. This statement allows execution of a section of code, which is not in the normal flow of control.

What is subprogram explain function and procedure with their syntax?

What Are Subprograms? Subprograms are named PL/SQL blocks that can take parameters and be invoked. PL/SQL has two types of subprograms called procedures and functions. Generally, you use a procedure to perform an action and a function to compute a value.

What is built _ in subprogram?

A subprogram can be built inside a package, within a block of PL/SQL or in a schema. A schema level subprogram is an independent one that mainly deals with the CREATE function or procedure. It is stored in the database and we can perform delete or drop operations on them.

What is polymorphism in Plsql?

“polymorphism” means multiple shapes (multiple subprograms, same name). Overloading is static polymorphism because the COMPILER resolves which of the subprograms to execute (at compile time). Dynamic polymorphism means we have 2+ methods with the same name, but in different types in the same hierarchy.

What are control structures in DBMS?

PL/SQL Control Structures are used to control flow of execution. PL/SQL provides different kinds of statements to provide such type of procedural capabilities. These statements are almost same as that of provided by other languages.

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