Query to count differents values of a field

Question

I have to do counts to the quantity of entitys in the database i have to obtain the quantity of registries for entities that appear
Buenas, les comento estoy trabajando con plsql y se me presenta un problema, necesito contar la cantidad de registros que devuelve la query por entidad, estoy trabajando con un procedure y evaluando con un cursor, pero no se como hacer trabajar la query para devolver ese valor
ENTITY OVERALL DATE          HOUR     
======     =====     ====          ====
ENT1          5          20100318          12:00
ENT2          20          20100318          12:00
ENT3          12          20100318          12:00
CURSOR1
SELECT distinct(rp.cod_entidad),
YYYYYYYYY,
to_date(to_char(SYSDATE,'YYYYMMDD'),'YYYY-MM-DD') as fecha_pago,
to_char(sysdate,'hh-mi-ss') as hora_pago
FROM registry rp, product pc
where pc.nro_solicitud = rp.nro_solicitud
and pc.resp_2= 'OK'
and pc.resp_1= 'OK'
Edited by: 862673 on 31/05/2011 10:01

Answer 1

I must build a query to tell me how many records per entity is, YYYYYYY is not a field, i dont know that I write
TABLE
====
ENTITY      Cliente          telefono
======      =======          ========
ENT1      indiana          234 54231
ENT1      jose           566 78954
ENT1      esteban      234 1234
ENT3      juan           23434567
ENT3      jacinto      56745
ENT3      Perez           23467677
ENT2      indiana          678967
ENT1      jaime           234
RESULT
=====
ENTITY OVERALL
====== =======
ENT1     4
ENT2     1
ENT3     3
SELECT cod_entidad
,     COUNT (DISTINCT yyyyyyyyy)     AS overall
FROM      registry rp,
     product pc
where      pc.nro_solicitud     = rp.nro_solicitud
and     pc.resp_2          = 'OK'
and      pc.resp_1          = 'OK'
GROUP BY cod_entidad
Edited by: 862673 on 31/05/2011 13:41