SELECT md1.node_id
 FROM `meta_data` as md1,`meta_data` as md2,`meta_data` as md3
 WHERE md1.name = "type"
 AND md1.value = "god"
 AND md2.name = "color"
 AND md2.value = "greeen"
 AND md3.name = "name"
 AND md3.value = "hello"
 AND md1.node_id = md2.node_id = md3.node_id;