Create a case statement in SQL

---

The following example uses ipython-sql. To install:
pip install ipython-sql

%sql is a Jupyter magic command and can be ignored when not using Jupyter notebooks.

Configure SQL for Jupyter notebook

#Load sql
%load_ext sql
#connect to sqlite
%sql sqlite://

Create a table

%%sql

 CREATE TABLE players2 (first_name, last_name, age);

 INSERT INTO players2 (first_name, last_name, age) VALUES 

    ('Lebron', 'James', 33),

    ('Steph', 'Curry', 30),

    ('Mike', 'Jordan', 55),

    ('Mike', 'Bibby', 40);

Perform a case statement based on multiple conditions in SQL

%%sql
--Here, we will replace the first name with Goat for all Mikes over 45 years of age 
--This is an example of modifying a field in a SQL table based on multiple conditions

SELECT

    CASE WHEN first_name = 'Mike' 

           AND age >45 THEN 'Goat'

           ELSE first_name

    END AS first_name,

   last_name,

    age

FROM players2

first_name	last_name	age
Lebron	James	33
Steph	Curry	30
Goat	Jordan	55
Mike	Bibby	40

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