oracle associative array example

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

The federated Array was formerly called the Pl/sql table. Federated arrays cannot be used in tables and can only be used as a structural body for programming. Federated arrays can only be accessed in Pl/sql. It is important to note that some of the

  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

Original address: https://www.cnblogs.com/Dreamer-1/p/6076440.htmlOne: What is the Oracle execution plan?Execution plan is a description of the execution process or access path of a query statement in OracleTwo: How to view Oracle execution

Reprinted: http://www.cnblogs.com/gkl0818/archive/2009/02/25/1397769.htmlOracle collectionsI. Types of Collections1. associative arrays ArrayIt is a one-dimensional, borderless sparse set of the same type and can only be used for PL/SQL.DeclareType

1.%type allows users to dynamically associate the data type of a column in a database with a variable in PL/SQL. The syntax is as follows: Variable_name Table.column%type 2.%rowtype allows a user to define a single variable that contains

Oracle Execution PlanRecently has been dealing with Oracle, from the initial face of the confused to now slightly know, also to summarize their recent studies, not regularly updated ing ...One: What is the Oracle execution plan?Execution plan is a

Sql*loader is an Oracle data load tool that is typically used to migrate operating system files to an Oracle database. Sql*loader is a large dataThe warehouse selection uses the Load method as it provides the quickest way (direct,parallel). Now, let'

One, array 1. DefinitionVariables: Storing the memory space of a single elementArray: A contiguous memory space that stores multiple elements, which is equivalent to multiple variablesCollectionArray name and IndexIndex: Numbering starting from 0,

These days to see the Oracle PL/SQL Real-combat this book, out of the study of the performance of the statement, the downstream standard on the impact of the code.1. Progressive processingThe program declares a cursor c1, and then implicitly opens