Search index tuning

server/AyaNova/util/AySchema.cs

@@ -151,11 +151,22 @@ namespace AyaNova.Util
 
 
                 //SEARCH TABLES
+                
                 await ExecQueryAsync("CREATE TABLE asearchdictionary (id BIGINT GENERATED ALWAYS AS IDENTITY PRIMARY KEY, word varchar(255) not null)");
-                //Search dictionary words must be unique
+                //Must be unique and also this is hit a *lot* during searches and also indexing
                 await ExecQueryAsync("CREATE UNIQUE INDEX asearchdictionary_word_idx ON asearchdictionary (word);");
+
+                //search key
                 await ExecQueryAsync("CREATE TABLE asearchkey (id BIGINT GENERATED ALWAYS AS IDENTITY PRIMARY KEY, wordid bigint not null REFERENCES asearchdictionary (id), objectid bigint not null, objecttype integer not null)");
-                //todo: I think there is a missing index here, need to look at the search query section again as it was changed several times from the original schema creation
+                //INDEX: Most selective first as there is more unique ID's than unique types
+                //to take advantage of this always query with where objectid=xx and objecttype=yy order 
+
+                //Only delete would use this, but, likely not needed as it's not in a loop
+                //await ExecQueryAsync("CREATE INDEX asearchkey_typeid_idx ON asearchkey (objectid, objecttype );");
+
+                //This is  what is needed during Searching                
+                //search does a lot of hits on searchkey looking for the wordid and optionally objecttype
+                await ExecQueryAsync("CREATE INDEX asearchkey_wordid_otype_idx ON asearchkey (wordid, objecttype);");
 
                 //create translation text tables
                 await ExecQueryAsync("CREATE TABLE atranslation (id BIGINT GENERATED ALWAYS AS IDENTITY PRIMARY KEY, name varchar(255) not null, stock bool, cjkindex bool default false)");