混淆尝试在 bigquery 中使用 SQL 将行转换为列

Question

I am new to bigquery and I am trying to write an sql query to achieve something specific. below is a sample data

|primary_type| year|
|robery      | 2001|
|robery      | 2001|
|robery      | 2002|
|BATTERY     | 2001|
|BATTERY     | 2001|
|BATTERY     | 2002|

the below query is able to generate this

select primary_type,
    year,
   count(*) as number_of_crime 
FROM
`bigquery-public-data`
group by primary_type, year
order by year asc;

|primary_type| year|number_of_crime|
|robery      | 2001| 2             |
|robery      | 2002| 1             |
|BATTERY     | 2001| 2             |
|BATTERY     | 2002| 1             |

But the objective is to be able to create this and im not sure how to go about it

|year|robery|BATTERY|
|2001|2     |2      |
|2002|1     |1      |

Answer 1

Consider below

execute immediate format('''
select * from your_table
pivot (count(*) for primary_type in (%s))
''', (select "'" || string_agg(distinct primary_type, "','") || "'" from your_table))              

if applied to sample data in your question - output is