Stored procedures are a great way to centralize your database logic and simplify data processing. They help you save time and effort by enabling the creation of reusable SQL code.
When to use stored procedure in postgresql
The best time to use stored procedures is when you have complex query logic that needs to be shared between several consumers of your database, like micro-services built in different programming languages. They are also a great way to reduce network traffic and keep your business logic closer to the application layer.
Creating a stored procedure in postgresql is easy. The syntax for a stored procedure is pretty much the same as that of a function, except without a return value.
Create a new stored procedure with the CREATE PROCEDURE command. This command includes a name, a number of parameters and a body that contains the commands to be executed. In addition to that, you can specify a language by using the LANGUAGE keyword or replace an existing procedure with CREATE OR REPLACE.
Define a procedure in PostgreSQL
Once you’ve created the procedure, you can add parameters to it by listing them in the parameter name field. Generally, you’ll want to name the input and output parameters with a meaningful value so that they can be easily identified in the stored procedure. You can also set a default value for an input or output parameter, if you don’t want to pass it every time.
When to call a stored procedure in postgresql
In general, if you’re executing SQL in a stored procedure, it should run just as quickly as a standard query. However, if you’re using something other than SQL, it may take longer.
When to use functions in postgresql
Functions have been around for some time now, and they make sense for many applications. They’re a reusable bit of code that takes inputs and produces outputs, and they can be used to perform multistep queries or group bits of business logic into a single transaction.
When to use a user-defined function in postgresql
Like stored procedures, user-defined functions are a great way to centralize your application’s business logic and simplify data processing. They allow you to define a function that takes inputs and produces an output in an efficient way, and they can be called as part of a SQL query or stored in your database.
When to use a function in postgresql
Functions are a powerful tool for building complex application logic. They’re a great way to build a flexible system with minimal upfront development costs and maximum flexibility. The downside is that they can be difficult to understand if you don’t have experience with them. They can also be prone to security issues, which is why it’s important to ensure they’re only used when necessary.