I’m currently working on a SQL query where I need to concatenate values from multiple columns into a single string. The table structure involves columns like first_name, last_name, and designation. I want to create a new column that combines these values with a specific separator.

Here’s my attempt using the CONCAT function:

sql
Copy code
SELECT
CONCAT(first_name, ‘ ‘, last_name, ‘ – ‘, designation) AS full_info
FROM employee_table
While this works, I’m wondering if there’s a more elegant or efficient way to achieve this, especially when dealing with a large dataset.

Additionally, I would like to handle cases where some values might be NULL without resulting in unexpected behavior. How can I modify the query to gracefully handle NULL values during concatenation?
Any insights or alternative approaches to concatenate columns using CONCAT in SQL would be appreciated!

While this works, I’m wondering if there’s a more elegant or efficient way to achieve this, especially when dealing with a large dataset

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