toad pl sql

1. Traditional layer by layer data, and Plsql as a separate unit to return to the client, reduce the query, reduce the network transmission of the round trip, funny2.pl/sql statement blocks are divided into two types: naming (subroutines, functions, packages that exist in the database, and later can be referenced by name), AnonymousDifference: A named statement block is stored in a database, referenced by a

PL/SQL language development Reference Manual: PL/SQL cursor PL/SQL language development Reference Manual1. cursor)The cursor is the data extracted from the data table. It is stored in the memory as a temporary table. There is a da

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 directly in the database, but the Associative array doesn't work, that is, associative array cannot be created separately using the create type statement. It can only b

Label:Control statements are fundamental to any language, to any programmer. Learn PL/SQL, only to realize the simplicity of Java grammar, it is not an era of things, of course, their positioning is not the same, not in their own longer than the short of others. --The 4th chapter begins--code 4.1 The simplest if statement uses example DECLARE v_count number (10): = 0; --Define the counter variable V_empno

For SQL optimization, you can use SQL tuning advisor to achieve automatic SQL optimization and adjustment. For PL/SQL code, there are both SQL code and PL/

v_job= ' salesman ' then UPDATE scott.emp SET sal=sal* (1+c_salesman) WHERE empno=empno1; elsif v_job= ' MANAGER ' then UPDATE scott.emp SET sal=sal* (1+c_manager) WHERE empno=empno1; elsif v_job= ' SR.CONT ' then UPDATE scott.emp SET sal=sal* (1+c_sr_cont) WHERE empno=empno1; END IF; --Displays completion information dbms_output. Put_Line (' already for employees ' | | empno1| | ' A successful raise! '); EXCEPTION-handling of PL/

PLSQLPL/SQL developer is an Oracle Database DeveloperProgramIntegrated Unit Development Environment (IDE). With PL/SQL developer, you can easily create the server part of your client/server application. So far, you can do the following in the worst case:• Use a text editor to Write Program units (processes, triggers, and so on ).• Use Oracle

Label:http://uule.iteye.com/blog/2061773 (source) Bulk Import Script : Open a Command Window > enter @ > It will let you select the file you want to import (you need to know the order of the imported files, Plsql will not automatically recognize this or write a script like LS) such as: @d:\svn\1.5 database Script \oracle\import2.sql http://blog.csdn.net/hbhgjiangkun/article/details/8208565 1, PL/

set of all the emp_id fields in the employee table being 3. When you need to operate the result set, you must complete three steps: Open the cursor, use the fetch statement to retrieve the data in the cursor, and close the cursor. Refer to the comments of the first code in this article to understand the three steps of the cursor operation. V. Other Concepts The concept in PL/SQL is very important. It is ma

The key to performance optimization is to find the right direction, for example, for a PL/SQL code, we think it is slow to execute, but in the end it needs a measurable tool to analyze, and we sometimes like to leave debug code in it, like using dbms_utility.get_ Time is spent on the execution of the statement, which can be cumbersome if the code is large.PL/SQL

Today, I am working on an OA report. I use a stored procedure to calculate some data. When doing a for xxx in xxxx loop end loop; loop, I never knew it was Mao. I can't catch the no_data_found exception in for any more. Once this no_data_found Oracle occurs, it automatically jumps out of the for loop, but I don't know what went wrong, that was depressing for an hour. Shit. Later I remembered that pl/SQL too

Today, I am working on an OA report. I use a stored procedure to calculate some data. When doing a for XXX in xxxx loop end loop; loop, I never knew it was Mao. I cannot catch the no_data_found exception in for any more. Once this no_data_found occurs Oracle will automatically Jump Out Of The for loop, but I don't know where the error occurred. It was a depressing hour. Shit. Later I remembered that PL/SQL