PostGIS Point in polygon

PiP.sql

-- Aiming for count of point_table points in polygons of polygon_table 

WITH polygon_table AS b
  SELECT b.the_geom_webmercator AS the_geom_webmercator, 
  COUNT(i.cartodb_id) AS points_count, 
  COUNT(i.cartodb_id)/ST_Area(b.the_geom) AS points_density, 
  1 AS cartodb_id FROM b, 
(SELECT * FROM point_table) i 
  WHERE ST_Intersects(i.the_geom_webmercator, b.the_geom_webmercator)

SELECT 
  b.the_geom_webmercator AS the_geom_webmercator, 
  COUNT(i.cartodb_id) AS points_count, 
  COUNT(i.cartodb_id)/ST_Area(b.the_geom) AS points_density, 
  1 AS cartodb_id FROM b
FROM polygon_table b, point_table i 
  WHERE ST_Intersects(i.the_geom_webmercator, b.the_geom_webmercator)

Woot! Thanks!