Case when then, but with AND condition inside when and before then

Question

In the below query I want to add an AND condition inside the CASE\'s WHEN and before THEN is that possible?

for example WHEN \'r\' AND table1.name=\"jones\" THEN \'very

Answer 1

Anything that evaluates to a boolean (true or false) can go in the WHEN condition of a CASE statement. So you can replace 'r' with:

('r' AND table1.name='jones')

Thinking about this more, you might have to lose the table1.event after CASE

SELECT table1.id, table1.name,
    CASE 
        WHEN (table1.event = 'r' AND table1.name='Jones') THEN 'very high'
        WHEN table1.event = 't' THEN 'very low'
        ELSE (SELECT table2.risk 
              FROM table2 
              WHERE table2.value <= table1.value 
              ORDER BY table2.value DESC LIMIT 1)
    END AS risk
FROM table1
ORDER BY FIELD( table1.event, 'r', 'f', 't' ), table1.value DESC