How do you declare an array in PL SQL?

How do you declare an array in PL SQL?

You can use VARRAY for a fixed-size array: declare type array_t is varray(3) of varchar2(10); array array_t := array_t(‘Matt’, ‘Joanne’, ‘Robert’); begin for i in 1.. array. count loop dbms_output.

What is equivalent to array in PL SQL?

PL/SQL nested tables are like one-dimensional arrays. You can model multi-dimensional arrays by creating nested tables whose elements are also nested tables. Nested tables differ from arrays in two important ways: Arrays have a fixed upper bound, but nested tables are unbounded (see Figure 5-1).

How do you create a table in PL SQL?

1 Answer. EXECUTE IMMEDIATE ‘create table table_2 as select col1, col2, col3, col4 from table_1’; If you create the table dynamically, though, you’d also need to use dynamic SQL every time you wanted to subsequently query the table.

What is a SQL array?

An array is an ordered set of elements of a single built-in data type. Elements in the array can be accessed and modified by their index value. Array elements are referenced in SQL statements by using one-based indexing; for example, MYARRAY[1], MYARRAY[2], and so on.

What is PLSQL file in Oracle?

PL/SQL programs such as functions and procedures are stored in Oracle database in compiled form . This allows applications or users to share the same functionality stored in Oracle database. PL/SQL also allows you to define triggers that can be invoked automatically in response to particular events in associated tables. PL/SQL is a high-performance language inside Oracle Databases. Oracle adds many enhancements to the PL/SQL to make it more efficient to interact with Oracle databases.

What is pragma keyword in Oracle PL/SQL?

The PRAGMA keyword is used to signify that the remainder of the PL/SQL statement is a pragma, or directive, to the compiler. Also called apseudoinstruction, a pragma simply passes information to the compiler rather than getting transformed into a particular execution. The syntax for using the PRAGMA keyword is as follows:

Is Oracle Fusion used with PL/SQL?

If you want to build oracle application using SQL and PL/SQL then you need Fusion Middleware. But you could develop an application using SQL and PL/SQL with SQL Developer and APEX or PHP or .NET or Ruby on Rails or whatever, it would still be a PL/SQL development at heart, with just the front-end presentation handled by another technology.

What are PL/SQL cursors in Oracle Database?

Implicit Cursors. The implicit cursors are allocated by Oracle by default while executing SQL statements.

  • Explicit Cursors. The developers can have their own user-defined context area to run DML operations.
  • and CLOSE.
  • Cursor Variables.
  • How do you declare an array in PL SQL? You can use VARRAY for a fixed-size array: declare type array_t is varray(3) of varchar2(10); array array_t := array_t(‘Matt’, ‘Joanne’, ‘Robert’); begin for i in 1.. array. count loop dbms_output. What is equivalent to array in PL SQL? PL/SQL nested tables are like one-dimensional arrays. You…