SELECT COUNT内的SELECT COUNT

Question

I am trying this code.

SELECT COUNT(SELECT COUNT(postnID) AS Total,
 postnID, Unit_DBM, job_type, 
 level, internal_plantilla, INCID,
 ITEM_NO_2005, position_type, 
 position_status 
 FROM plantilla 
 GROUP BY internal_plantilla, level, INCID, postnID, position_status       
 ORDER BY internal_plantilla, postnID) as num 
 FROM plantilla

But having error in mysql. How can I perform select count inside a select count?

Answer 1

you can do by:

SELECT COUNT(*) from (SELECT COUNT(postnID) AS Total,
 postnID, Unit_DBM, job_type, 
 level, internal_plantilla, INCID,
 ITEM_NO_2005, position_type, 
 position_status 
 FROM plantilla 
 GROUP BY internal_plantilla, level, INCID, postnID, position_status       
 ORDER BY internal_plantilla, postnID) as num