Оптимизация функции

CREATE OR REPLACE FUNCTION PUBLIC."fn_AUR_StatementsInsert"(claimsuuid character varying) RETURNS void
    LANGUAGE plpgsql
    AS $$
 DECLARE claimType INTEGER;
BEGIN   
 
claimType = (SELECT "ClaimTypeId"
             FROM "AUR_Claims" 
             WHERE "ID" = claimsuuid::uuid);
            
    IF NOT EXISTS (SELECT "ClaimID" FROM "AUR_CheckListGroups" WHERE "ClaimID" = claimsuuid::uuid)
    
    THEN 
    
    IF (claimType = 1) 
    
    THEN 
    
     INSERT INTO "AUR_CheckListGroups" ("OptionID" , "ClaimID" , "TypeId" )
    SELECT "ID" , claimsuuid::uuid , "GroupTypeID" FROM "AUR_d_CheckListOptions" WHERE "GroupTypeID" = 1 OR "GroupTypeID" = 2;
    
     ELSE 
    INSERT INTO "AUR_CheckListGroups" ("OptionID" , "ClaimID" , "TypeId" )
    SELECT "ID" , claimsuuid::uuid , "GroupTypeID" FROM "AUR_d_CheckListOptions" WHERE "GroupTypeID" = 4;
    END IF; 
   
    END IF;
    
         
END
$$;

IF (ClaimType = 1) THEN
type_array := ARRAY[1,2];
ELSE
type_array := ARRAY[4];
END IF;
INSERT INTO "AUR_CheckListGroups" ("OptionID" , "ClaimID" , "TypeId" )
SELECT "ID" , claimsuuid::uuid , "GroupTypeID" FROM "AUR_d_CheckListOptions" WHERE "GroupTypeID" = ANY(type_array);