![]() ![]() The SQL code that makes up the procedure. This contains the SQL statements that are executed when the procedure is called.įor external language procedures, this is the file with the procedure’s code.įor external language procedures, this is the name of the symbol to link to in the file specified by obj_file. PostgreSQL supports several procedural languages, including PL/pgSQL, PL/Tcl, PL/Perl, and PL/Python.Ĭustom configuration parameters for the procedure. The procedural language in which the procedure is written. Can be IN (the argument is an input argument), OUT (the argument is an output argument), or INOUT (the argument is both an input and an output argument). When creating a PostgreSQL procedure, you can specify several parameters: Parameter To use dbSchema, you need to have it installed and connected to your PostgreSQL database.įor installation and establishing connection refer to PostgreSQL-How to create a database? Procedure Parameters Explained You should also have a basic understanding of SQL. Version Control: Keeping track of changes to stored procedures can be more difficult than with application code, especially when multiple developers are involved.īefore you start, you need to have PostgreSQL installed and set up on your system. If you switch to a different database system, you may need to rewrite your procedures.ĭebugging: Debugging stored procedures can often be more complex than debugging application code. ![]() Portability: Procedures are typically specific to one type of database system. Maintenance: Changes in a procedure do not require changes in the application code as long as the procedure interface (parameters and result) remains consistent. Security: Procedures provide a layer of security, as you can grant permissions to execute the procedure, instead of granting access to all the underlying tables. Modularity: You can write a procedure once, and call it from multiple places in your application. Advantages of Using a ProcedureĮfficiency: Procedures are precompiled and stored on the database server, reducing the amount of information sent over the network and improving performance. Procedures can accept parameters, perform actions and return a value. They are stored on the database server and can be invoked by applications as required. In the context of databases, a procedure (often referred to as a stored procedure) is a precompiled collection of SQL statements and control-of-flow statements. This article will guide you through the process of creating a procedure in PostgreSQL, both using psql command-line interface and the graphical interface DbSchema. PostgreSQL, a highly powerful and flexible open-source relational database, supports the creation and use of stored procedures. In the world of databases, procedures play a crucial role in automating routine tasks and encapsulating repetitive SQL queries. ![]()
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