pl sql array initialization

Chapter 2 procedural performance tuning of PL/SQL applications I. Reasons for PL/SQL Performance problems When the execution efficiency of PL/SQL-based applications is low, it is usually caused by poor SQL statements and programming methods,

This week's book is the Ultimate guide to Oracle's C PL (SQL) programming, published by the mechanical industry press, Sun Fingdong, Wang Yu, Guo Xiaohui. Content Introduction: The ultimate guide to Oracle 12c PL/SQL is the most

  1) classification of Sets Oracle supports three types of collections: Associative array (Index-by table) Nested table) Variable-length array (VARRAY) One of their differences is that the Nested table and VARRY can be used either in PL/SQL or

Grammar:identifier [CONSTANT] datatype [not NULL] [: = | DEFAULT Expr]Identifier: Used to specify the name of a variable or constant.CONSTANT: Used to specify constants. When you define a constant, you must specify its initial value, and its value

PL/SQL provides three common set union arrays, nested tables, and variable-length arrays, PL/SQL provides corresponding functions or procedures for operation. Element or subscript in the vertical array. These functions or procedures are called set

Scalar data types are essential. Needless to say, you must master them. The following describes PL/SQL Composite data types.   Composite TypeThe composite type can store multiple values, including records and sets. A set is one-dimensional, but can

The significance of understanding Oracle collections is that when we develop applications using programming languages, we use a lot of built-in Collection types, such as arrays and linked lists. The significance of understanding Oracle collections

Environment: ORCLE 10GAn SQL statement is displayed separately. How to handle exceptions.1) Standard PL/SQL blocks containing Exception HandlingDECLARENo_Detail_record EXCEPTION;PRAGMA EXCEPTION_INIT(No_Detail_record,-20000 );V_nDetailCount

Combined arrays are previously called PLSQL tables. Union arrays cannot be used in tables. They can only be used as structures for programming. Union Arrays can only be accessed in PLSQL A union array is previously called a PL/SQL table. Union

"PL/SQL Programming Basics"Grammar:DeclareDeclaration parts, such as defining variables, constants, cursorsBeginprogram writing, SQL statementsexceptionHandling ExceptionsEnd/forward slash indicates fast execution of the programExample--Created on 20