procedure_demo$#INSERTINTOpublic."Genre"VALUES("GenreId","Name");procedure_demo$# $$;CREATEPROCEDUREprocedure_demo=#CALLgenre_insert_data(26,'Pop');CALLprocedure_demo=#select*frompublic."Genre"where"GenreId"=26;
Calling a stored procedure example Let’s take an example of calling a PostgreSQL stored procedure in Python. 1) Create a new stored procedure First, open the Command Prompt on Windows or Terminal on Unix-like systems. Second, connect to the suppliers database on the local PostgreSQL server:...
The next example shows a simple procedure: 1 2 3 4 5 6 7 8 9 10 11 12 db11=#CREATEPROCEDUREtest_proc() LANGUAGEplpgsql AS$$ BEGIN CREATETABLEa(aidint); CREATETABLEb(bidint); COMMIT; CREATETABLEc(cidint); ROLLBACK; END;
Example 6.2. GettingSETOFtype values from a function Statement stmt = conn.createStatement(); stmt.execute("CREATE OR REPLACE FUNCTION setoffunc() RETURNS SETOF int AS " + "' SELECT 1 UNION SELECT 2;' LANGUAGE sql"); ResultSet rs = stmt.executeQuery("SELECT * FROM setoffunc()"); whi...
SELECT pg_get_functiondef(( SELECT oid FROM pg_proc WHERE proname = 'function_name')); For example, I want to show the source code of the functionfilm_in_stock: SELECT pg_get_functiondef(( SELECT oid FROM pg_proc WHERE proname = 'film_in_stock')); ...
They can be used within SELECT, WHERE, GROUP BY, and HAVING clauses Let’s show a practical example of the usage of functions in SQL. 2.1. Practical Example For illustration, we’ll use theStudenttable of the Baeldung University database. Let’s create a function to calculate the age of...
SQL Server also supports defining names for stored procedure parameters. PostgreSQL vs. MSSQL – Synonyms SQL Server supports synonyms. Synonyms provide a layer of abstraction that protects a client application from changes made to base objects. A synonym belongs to a schema; like other o...
Along with that, the hardware configuration also makes a significant impact on your database performance. For example, if you use aVPS with NVMe storage, the underlying storage is much faster than a regular hard drive, so your database operations will be extremely fast. ...
For example, other approaches offer better solutions when dealing with huge amounts of unstructured data or blob storage where you don’t need ACID compliance. But you still may benefit from PostgreSQL developers when using other technologies if you are migrating data from PostgreSQL. As the DBMS...
SelectAuthor from scratchas the function creation method. Enter a meaningful name for your function, such asPostgreSQL_Stored_Procedure_Blog. Select the runtime environment that matches your preferred programming language (for example, Python, Node.js, or Java)...