Shulou(Shulou.com)05/31 Report--

This article mainly introduces "what is PL/SQL". In daily operation, I believe many people have doubts about what is PL/SQL. The editor consulted all kinds of materials and sorted out simple and easy-to-use methods of operation. I hope it will be helpful for you to answer the doubts about "what is PL/SQL?" Next, please follow the editor to study!

What is PL/SQL?

PL/SQL (Procedure Language/SQL) is an extension of oracle to the standard SQL language. Ql/sql not only allows embedding in the sql language, but also defines variables and constants, allows private conditional statements and loop statements, and allows exceptions to handle various errors, which makes it more powerful.

The main PL/SQL development tools are:

SQL*PLUS development tools. SQL*PLUS is a command-line tool provided by oracle, in which we can write SQL and PL/SQL programs directly.

Oracle SQL Developer is a free integrated development environment that simplifies the development and management of Oracle databases in traditional and cloud deployments.

PL/SQL Developer is an integrated development environment (ide) for developing PL/SQL blocks. It is a stand-alone product, not an add-on to oracle.

II. The difference between PL/SQL and SQL

SQL is a structured query language, which is close to the natural language. With SQL, you only need to say what to do, not how to do it. It is composed of data definition language, data manipulation language and data control language, which is not process-oriented, that is, the former statement has nothing to do with the latter statement. SQL is the standard language.

PL/SQL,Oracle extends the SQL standard to add process-oriented functions, so it can be used to write stored procedures, stored functions, triggers, and so on. PL/SQL is a structured SQL, which adds IF to the standard SQL. ELSE... For... . Wait for the SQL to control the process.

Third, develop the first PL/SQL program

Develop the first PL/SQL program in SQLPLUS

Develop the first PL/SQL program in SQLPLUS

At this point, the study of "what is PL/SQL" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.