Question

got two tables
node:

nid INT(10)
type (VARCHAR(32))

node_hit_count

nid INT(10)
totalcount (bigint(20))

i need to select all nids from node table which are not in node_hit_count table and WHERE node type is equal to feature or home or competition

What i have tried, its wrong, and my mind is gonna blow :/

select * from node left join node_hit_counter on node.nid=node_hit_counter.nid 

where hit.nid is null and node.type IN ('feature', 'home', 'competition')

Answer 1

What is the hit.nid in the WHERE clause. You have to use WHERE node.nid IS NULL instead like so:

select node.*
from node 
left join node_hit_counter on node.nid = node_hit_counter.nid 
where node.nid is null 
  and node.type IN ('feature', 'home', 'competition');

OR:

SELECT *
FROM node
WHERE nid NOT IN(SELECT nid FROM node_hit_counter WHERE nid IS NOT NULL)
  AND type IN ('feature', 'home', 'competition');