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The ORACLE tutorial is: PL/SQL programming experience summary Developer Network Oracle. I usually encounter some problems in PL/SQL programming. I will summarize them in the form of Q A for you to share.1. Can pipelines be used to improve processing efficiency when you need to load a large amount of data streams to a table or process a large amount of data streams?MPs queue functions are very convenient fo

Difference between % TYPE and % ROWTYPE in PL/SQL, % type % rowtype % TYPE: Defines a variable. Its data type is the same as that of a defined data variable or the data type of a column in a database table.In this case, % TYPE can be used.The advantages of using the % TYPE feature are: 1. You do not need to know the Data Type of the referenced database column;2. The data type of the referenced database column can be changed in real time. Declare -- D

Multiple unrelated columns are combined to form a PL/SQL record type, which can be processed as a whole. In addition, PL/SQL record types can be performedNesting and defining Union arrays and nested tables based on PL/SQL records. This article first reviews several declarations of PL/SQL records. Next, it mainly descri

MySQL, MariaDB, SQL Server, SQLite, Oracle, and PostgreSQL databases in a single program. The official website is: Http://www.navicat.com.cn/products/navicat-premium. Since this machine is a 64-bit operating system, download the latest 11.1.10 64-bit version. 3, Pl\sql Developer 10.0.5.1710 PL/SQL Developer is an integrated development environment designed specifically for the development of Oracle Databas

In the process of operation, it is sometimes necessary to send the data result set of SQL query in HTML form, so it is necessary to stitch the result set of SQL query into HTML code. There are usually two different ways to do this. One is to use the cron job directly to poll and do it using the OS level mail program. Its query result set can be directly under Sql*plus by setting HTML tags to automatically implement HTML table Form. One way is to use the scheduler job in Oracle to poll periodical

The previous blog introduced how to use the Navicat tool to back up Oracle. This blog introduced how to use the PL/SQL Developer tool to import and export Oracle databases. PL/SQL Developer is one of the main tools used by Oracle databases to import and export databases. This article describes how to import and export Oracle databases using PL/SQL. 1. Oracle Dat

Operation Maintenance and working principle of PL single-machine dust Catcher in NingxiaPL stand-alone filter is a small air volume, high dust removal efficiency of small single-machine bag dust collector, important by the fan, flat filter bag, shell, ash motor composition, is used in the workshop internal consumption of dust management, such as: lathe processing, polishing and grinding, ceramics, glass, refractory materials manufacturing, to meet the

PL/SQL-related data dictionary and plsql-related dictionary Data Dictionary related to PL/SQLHttp://www.oracle.com/technetwork/issue-archive/2012/12-nov/o62plsql-1851968.html Sometimes, we encounter the following problems during PL/SQL development:1) What database objects does my program depend on?2) which package calls a subroutine or variable in another packag

Easy-to-use PL/SQL Developer settings, pldeveloperSome time before the easy-to-use PL/SQL Developer settings, the company trained pl/SQL related knowledge internally. Here I will share my settings that I think are very convenient. 1. When PL/SQL Developer is used, PL/SQL Dev

Please contact me if you have any questions :) Coding FAQ (PL/SQL and Java)1. the PL/SQL data type is incorrect. For example, aac001 is of the varchar2 type, but it is not included in ''. Although the program can be queried, it poses a hidden risk for future performance problems.Select aac002 from ac01 where aac001 = 123456;Select aac002 from ac01 where aac001 = '000000 ';2. The code is too long.No matter i

Label:PL/SQL exception handling for Oracle databaseExceptions are abnormal events that occur during the course of a program's operation, usually caused by hardware problems or programming problems. Even the best-written programs may encounter errors or unanticipated events during the PL/SQL programming process. A robust program should be able to properly handle various anomalies and recover from them as much as possible. 1. Exception Handling Exceptio

Label:1. PL/SQL Overview1) ConceptPL/SQL (procedural language) is an extension of Oracle based on the standard SQL language, enabling you to define variables, use logical control statements, and so on: The default Oracle can only process one SQL statement at a time, Each SQL statement sends a request call to the server, and if you use PL + SQL, the statement in a block acts as a group, sending only one requ

To connect to Oracle, you often need to install an ORACLE client of hundreds of megabytes, which is very troublesome. This section describes how to use a thin client that does not need to be installed with PL To connect to Oracle, you often need to install an ORACLE client of hundreds of megabytes, which is very troublesome. This section describes how to use a thin client that does not need to be installed with PL