Switched to cache_occurrences_functional

Better performance if all filtering done in one table.

application/helpers/report_standard_params_occurrences.php

@@ -395,12 +395,9 @@ public static function getParameters() {
       ),
       'identification_difficulty' => array('datatype'=>'integer', 'default'=>'', 'display'=>'Identification difficulty',
         'description'=>'Identification difficulty on a scale of 1 to 5',
-        'joins' => array(
-          array('value'=>'', 'operator'=>'', 'standard_join'=>'prefcttl')
-        ),
         'wheres' => array(
           array('value'=>'', 'operator'=>'',
-            'sql'=>"coalesce(cttl.identification_difficulty, 0) #identification_difficulty_op# #identification_difficulty#")
+            'sql'=>"coalesce(o.identification_difficulty, 0) #identification_difficulty_op# #identification_difficulty#")
         )
       ),
     );

modules/cache_builder/db/version_1_15_0/201611121607_cache_occurrences_id_diff.sql

@@ -0,0 +1,4 @@
+ALTER TABLE cache_occurrences_functional ADD COLUMN identification_difficulty integer;
+
+COMMENT ON COLUMN cache_occurrences_functional.identification_difficulty IS
+  'Identification difficulty assigned by the data_cleaner module, on a scale from 1 (easy) to 5 (difficult)';

modules/cache_builder/db/version_1_15_0/201611121607_cache_taxa_taxon_lists_id_diff_data.sql → modules/cache_builder/db/version_1_15_0/201611121607_cache_occurrences_id_diff_data.sql

@@ -1,8 +1,8 @@
 -- #slow script#
 
-update cache_taxa_taxon_lists cttl
+update cache_occurrences_functional o
   set identification_difficulty=vrd.value::integer
 from verification_rule_data vrd
 join verification_rules vr on vr.id=vrd.verification_rule_id and vr.deleted=false
     and vr.test_type='IdentificationDifficulty'
-where vrd.header_name='Data' and upper(vrd.key)=cttl.external_key and vrd.deleted=false;
+where vrd.header_name='Data' and upper(vrd.key)=o.taxa_taxon_list_external_key and vrd.deleted=false;