Remove materialized views. (#908)

* One pass at materialized views, only about 30% faster, not good.

* Before merging master to test out bans.

* DB Rework working, still need more testing.

* Fixing accidental addadmin bug from asonix async merge.

* Fixing the comment delete trigger

* Some more DB additions.

- Adding a hot_rank desc, published desc index to post_aggregates_fast.
- Removed WITH CTE queries in favor of direct selects (since CTEs cant
  use indexes)

* Removing some unecessary indexes.

* Some more DB optimizings

- Changing the fast_id pkeys to just ids on the fast tables.
- Removing the private_message_fast, since the view contains no aggregates.
- Comment and post voting now no longer pull from the views, they update the counts directly.

* Adding community_agg_view and post_agg_views Credit: eiknat.

* Adding user and comment_view migrations. (comment_view still broken)

* Adding more views. Credit Eiknat.

1 files changed, 20 insertions, 9 deletions

diff --git a/server/query_testing/generate_explain_reports.sh b/server/query_testing/generate_explain_reports.sh
index 6ce7dc42..439b46a7 100755
--- a/server/query_testing/generate_explain_reports.sh
+++ b/server/query_testing/generate_explain_reports.sh
@@ -1,31 +1,42 @@
 #!/bin/bash
 set -e
 
+# You can import these to http://tatiyants.com/pev/#/plans/new
+
 # Do the views first
 
-echo "explain (analyze, format json) select * from user_mview" > explain.sql
-psql -qAt -U lemmy -f explain.sql > user_view.json
+echo "explain (analyze, format json) select * from user_fast" > explain.sql
+psql -qAt -U lemmy -f explain.sql > user_fast.json
 
-echo "explain (analyze, format json) select * from post_mview where user_id is null order by hot_rank desc, published desc" > explain.sql
+echo "explain (analyze, format json) select * from post_view where user_id is null order by hot_rank desc, published desc" > explain.sql
 psql -qAt -U lemmy -f explain.sql > post_view.json
 
-echo "explain (analyze, format json) select * from comment_mview where user_id is null" > explain.sql
+echo "explain (analyze, format json) select * from post_fast_view where user_id is null order by hot_rank desc, published desc" > explain.sql
+psql -qAt -U lemmy -f explain.sql > post_fast_view.json
+
+echo "explain (analyze, format json) select * from comment_view where user_id is null" > explain.sql
 psql -qAt -U lemmy -f explain.sql > comment_view.json
 
-echo "explain (analyze, format json) select * from community_mview where user_id is null order by hot_rank desc" > explain.sql
+echo "explain (analyze, format json) select * from comment_fast_view where user_id is null" > explain.sql
+psql -qAt -U lemmy -f explain.sql > comment_fast_view.json
+
+echo "explain (analyze, format json) select * from community_view where user_id is null order by hot_rank desc" > explain.sql
 psql -qAt -U lemmy -f explain.sql > community_view.json
 
+echo "explain (analyze, format json) select * from community_fast_view where user_id is null order by hot_rank desc" > explain.sql
+psql -qAt -U lemmy -f explain.sql > community_fast_view.json
+
 echo "explain (analyze, format json) select * from site_view limit 1" > explain.sql
 psql -qAt -U lemmy -f explain.sql > site_view.json
 
-echo "explain (analyze, format json) select * from reply_view where user_id = 34 and recipient_id = 34" > explain.sql
-psql -qAt -U lemmy -f explain.sql > reply_view.json
+echo "explain (analyze, format json) select * from reply_fast_view where user_id = 34 and recipient_id = 34" > explain.sql
+psql -qAt -U lemmy -f explain.sql > reply_fast_view.json
 
 echo "explain (analyze, format json) select * from user_mention_view where user_id = 34 and recipient_id = 34" > explain.sql
 psql -qAt -U lemmy -f explain.sql > user_mention_view.json
 
-echo "explain (analyze, format json) select * from user_mention_mview where user_id = 34 and recipient_id = 34" > explain.sql
-psql -qAt -U lemmy -f explain.sql > user_mention_mview.json
+echo "explain (analyze, format json) select * from user_mention_fast_view where user_id = 34 and recipient_id = 34" > explain.sql
+psql -qAt -U lemmy -f explain.sql > user_mention_fast_view.json
 
 grep "Execution Time" *.json