Return Default value if no row found -mysql

Question

I\'m building query to search multiple rows from database like

SELECT 
  * 
FROM
  table1 
WHERE col1 = \'012311\' 
  OR col1 = \'0123631\' 
  OR col1 = \'0         


        

Answer 1

There are several approaches, which depend on the dataset. Here's one way:

SELECT *, 
IFNULL(
    ( SELECT col1 FROM table1 
        WHERE col1 IN ('012311','0123631','091233','092111') 
    ),
    'some_value'
) AS my_col1
FROM table1;

Not neccessarily copy+paste, you will have to adjust for your specific case.