Generador Query

select tabla1, count()/(select count() from financieras) as probabilidad from financieras where tabla1 in(select distinct tabla1 from financieras) group by tabla1;
select tabla1, tabla2, count()/(select count() from financieras) as Probabilidad from financieras where tabla1 in(select distinct tabla1 from financieras) and tabla2 in(select distinct tabla2 from financieras) group by tabla1, tabla1 order by tabla1, tabla2;