Google BigQuery CASE function

Question

I\'m trying to run a query like what\'s answered here, SQL Selecting multiple sums?

SELECT  SUM(CASE WHEN order_date >= \'01/01/09\' THEN quantity ELSE 0          


        

Answer 1

2013 update: BigQuery supports CASE:

SELECT CASE WHEN x=1 THEN 'one' WHEN x=2 THEN 'two' ELSE 'more' END 
FROM (SELECT 1 AS x) 

'one'

Answer 2

The way to do this in BigQuery is to use the if(test,then,else) function. For example: SELECT sum(if (revision_id > 10, num_characters, 0)) FROM [publicdata:samples.wikipedia] or similar to your second query:

SELECT if (revision_id == 1, 'one', (if (revision_id == 2, 'two', 'more'))) FROM [publicdata:samples.wikipedia] limit 100