two

answers/Part2.sql .sql

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+# 1.What are all the types of pokemon that a pokemon can have?
+SELECT * FROM types;
+
+# 2.What is the name of the pokemon with id 45?
+-- Eevve
+SELECT * FROM Pokemons WHERE id = 45; 
+
+# 3.How many pokemon are there?
+-- 656
+SELECT COUNT(*) FROM pokemons;
+
+# 4. How many types are there?
+-- 18
+SELECT COUNT(*) FROM types;
+
+# 5. How many pokemon have a secondary type? 
+-- 316
+SELECT COUNT(secondary_type) FROM pokemons;
+

answers/Part3.sql

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+#1 What is each pokemon's primary type?
+--
+SELECT 
+       p.name AS Pokemon_Name, 
+       t.name AS Primary_Type_Name
+     FROM Pokemons p
+     LEFT JOIN types t
+     ON p.primary_type = t.id; 
+
+#2 What is Rufflet's secondary type?
+-- normal
+SELECT
+  p.name AS Pokemon_Name, 
+  t.name AS Primary_Type_Name
+FROM Pokemons p
+LEFT JOIN types t
+ON p.primary_type = t.id
+WHERE p.name = "Rufflet";
+
+#3 What are the names of the pokemon that belong to the trainer with trainerID 303?
+-- | Wailord y Vileplum
+SELECT
+  name AS Pokemon_Name
+FROM Pokemons p
+WHERE EXISTS (SELECT 1 FROM pokemon_trainer pt WHERE pt.trainerID = 303 AND pt.pokemon_id = p.id);
+
+#4 How many pokemon have a secondary type `Poison`
+-- 31
+
+   SELECT COUNT(secondary_type) FROM pokemons p JOIN types t ON p.secondary_type  = t.id WHERE t.name = 'Poison';
+
+#5 What are all the primary types and how many pokemon have that type?
+--
+SELECT
+  t.name,
+  COUNT(p.primary_type) AS Count_Primary_Type
+FROM Pokemons p
+LEFT JOIN types t
+ON p.primary_type = t.id
+GROUP BY t.name, p.primary_type;
+
+#6 How many pokemon at level 100 does each trainer with at least one level 100 pokemone have? 
+-- (Hint: your query should not display a trainer
+--
+SELECT
+  trainerid, 
+  COUNT(1) AS Count_Pokemon_Lvl100
+FROM Pokemon_trainer
+WHERE pokelevel = 100
+GROUP BY trainerID;
+
+#7 How many pokemon only belong to one trainer and no other?
+-- 13
+SELECT
+  COUNT(pokemon_id) AS COUNT
+  FROM (
+    SELECT
+       pokemon_id, 
+       COUNT(trainerID) AS Count_One_Trainer
+    FROM pokemon_trainer
+    GROUP BY pokemon_id
+    HAVING Count_One_Trainer = 1
+) x; 
+
+--------------------------- to see the names ----------------------
+SELECT COUNT(pokemon_id), p.name FROM pokemon_trainer pt JOIN pokemons p ON pt.pokemon_id = p.id GROUP BY pokemon_id HAVING COUNT(pokemon_id) = 1;

answers/Part4sql.sql

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+-- return these columns  --- Pokemon's name| Trainer's name| Current Level| Primary Type Name| Secondary Type Name|
+-- Sort the data by finding out which trainer has the strongest pokemon -- strongest to weakest
+
+select pokemons_name, trainers_name, current_level, primary_type_name, types.name as secondary_type_name
+from (select pokemons.name as pokemons_name, trainers.trainername as trainers_name, pokemon_trainer.pokelevel as current_level, types.name as primary_type_name, pokemons.secondary_type as secondary_type_id
+from pokemons
+join pokemon_trainer on pokemon_trainer.pokemon_id = pokemons.id
+join trainers on trainers.trainerid = pokemon_trainer.trainerid
+join types on types.id = pokemons.primary_type) table_1
+join types on types.id = secondary_type_id
+order by current_level desc;
+
+
+
+
+
+-- It has the strongest levels----------

pokemon_sql/pokemon_types.sql

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+create table types(id int auto_increment primary key,name text not null);
+INSERT INTO pokemon.types (id, name) VALUES (1, 'Normal');
+INSERT INTO pokemon.types (id, name) VALUES (2, 'Water');
+INSERT INTO pokemon.types (id, name) VALUES (3, 'Grass');
+INSERT INTO pokemon.types (id, name) VALUES (4, 'Rock');
+INSERT INTO pokemon.types (id, name) VALUES (5, 'Fire');
+INSERT INTO pokemon.types (id, name) VALUES (6, 'Ground');
+INSERT INTO pokemon.types (id, name) VALUES (7, 'Poison');
+INSERT INTO pokemon.types (id, name) VALUES (8, 'Bug');
+INSERT INTO pokemon.types (id, name) VALUES (9, 'Electric');
+INSERT INTO pokemon.types (id, name) VALUES (10, 'Dragon');
+INSERT INTO pokemon.types (id, name) VALUES (11, 'Steel');
+INSERT INTO pokemon.types (id, name) VALUES (12, 'Dark');
+INSERT INTO pokemon.types (id, name) VALUES (13, 'Fighting');
+INSERT INTO pokemon.types (id, name) VALUES (14, 'Psychic');
+INSERT INTO pokemon.types (id, name) VALUES (15, 'Ghost');
+INSERT INTO pokemon.types (id, name) VALUES (16, 'Fairy');
+INSERT INTO pokemon.types (id, name) VALUES (17, 'Ice');
+INSERT INTO pokemon.types (id, name) VALUES (18, 'Flying');