How to create a helper function for queries in postgresql?

@dedrick 

To create a helper function for queries in PostgreSQL, you can follow these steps:

1. Connect to your PostgreSQL database using a tool like pgAdmin or psql.
2. Create a new function using the CREATE FUNCTION statement. Here is an example of a simple helper function that returns the result of a query:

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CREATE FUNCTION run_query(query TEXT) RETURNS TABLE(result TEXT) AS $$
BEGIN
    RETURN QUERY EXECUTE query;
END;
$$ LANGUAGE plpgsql;

1. In this function, the query parameter is of type TEXT and the function returns a table with a single column named result.
2. You can then call this helper function and pass your query as a parameter. For example:

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SELECT * FROM run_query('SELECT * FROM users WHERE age > 25');

This will execute the query passed as a parameter to the helper function and return the result.

1. You can add more logic to the helper function as needed, such as input validation, error handling, or additional query transformations.

By creating a helper function for queries in PostgreSQL, you can encapsulate common query logic and reuse it across multiple queries, making your code more modular and easier to maintain.