oracle pl sql array of varchar2

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,

A6l 06,200 4 Venkat -- thanks for the question regarding "passing an array from Java to PL/SQL", version 8.1.7 You asked Hi Tom, I need to pass String Array from Java to PL/SQL and also returnarray from PL/SQL. I refered your book and

*sql optimization based on ORACLE11GR2 reading notes * Third, cursor in OracleThe cursor in Oracle is a vector of SQL parsing and execution in an Oracle database and is a data structure for C (Oracle is written in C).There are two types of cursor in

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

  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

Oracle----PL/SQLPL/SQL is a programming language that combines process language (procedural Language) with Structured Query Language (SQL)PL/SQL is unique to Oracle, and is an extension to the. Different database vendors have similar "dialects" that

Constant 1. Define the syntax format for constants Constant name constant type identifier [not null]:= value; constants, including the following variable names must begin with a letter, cannot have spaces, cannot exceed 30 characters in length, and

Variable introduction when writing a PL/SQL program, you can define variables and constants, including: 1 in a PL/SQL program, scalar type (scalar) 2), composite type (composite)--for manipulating a single record 3), reference type (reference)--

First, Variable introductionWhen you write a PL/SQL program, you can define variables and constants, including the following in the PL/SQL program:1), scalar type (scalar)2), composite type (composite) --for manipulating individual records3),

Constant 1. Define the syntax format of constantsConstant name constant type identifier [not null]: = value;Constants, including variable names that follow them, must start with a letter, cannot contain spaces, cannot exceed 30 characters, and