answered some questions

module1-introduction-to-sql/README.md

@@ -51,14 +51,79 @@ randomized, the numeric and boolean fields were left as defaults.
 Use `sqlite3` to load and write queries to explore the data, and answer the
 following questions:
 
-- How many total Characters are there?
+- How many total Characters are there? 302
+  SELECT
+	count(character_id)
+FROM charactercreator_character
+
 - How many of each specific subclass?
-- How many total Items?
-- How many of the Items are weapons? How many are not?
+  Cleric = 75
+  Fighter = 68
+  Mage = 108
+  Necromancer = 11
+  Thief = 51
+  SELECT
+	  COUNT()
+  FROM charactercreator_cleric
+	SELECT
+	  COUNT()
+  FROM charactercreator_fighter
+	SELECT
+	  COUNT()
+  FROM charactercreator_mage
+  SELECT
+    COUNT()
+  FROM charactercreator_necromancer
+	SELECT
+    COUNT()
+  FROM charactercreator_thief
+
+- How many total Items? 211
+  SELECT 
+	(select COUNT(item_id) FROM armory_item)
+	+ (select COUNT(item_ptr_id) FROM armory_weapon)
+  AS Total_Items
+
+- How many of the Items are weapons? How many are not? 
+  Weapons = 37, Other items = 174
+  SELECT
+	COUNT()
+  FROM armory_weapon
+
 - How many Items does each character have? (Return first 20 rows)
+  SELECT 
+	character_id
+	,count(item_id)
+  FROM charactercreator_character_inventory
+  GROUP BY character_id
+  LIMIT 20
+
 - How many Weapons does each character have? (Return first 20 rows)
+  SELECT character_id, count(item_id)
+	FROM charactercreator_character_inventory LEFT JOIN armory_weapon
+	ON item_id = item_ptr_id
+  GROUP BY character_id
+  LIMIT 20
+
 - On average, how many Items does each Character have?
+  SELECT 
+	character_id
+	,COUNT(item_id) as 'No_of_Items'
+	,ROUND(AVG(item_id))
+  FROM charactercreator_character_inventory
+  GROUP BY character_id
+  ORDER BY character_id
+  LIMIT 20
+
 - On average, how many Weapons does each character have?
+  SELECT 
+  character_id
+	,count(item_id)
+	,round(avg(item_ptr_id))
+FROM charactercreator_character_inventory LEFT JOIN armory_weapon
+ON item_id = item_ptr_id
+GROUP BY character_id
+LIMIT 20
 
 You do not need all the tables - in particular, the `account_*`, `auth_*`,
 `django_*`, and `socialaccount_*` tables are for the application and do not have

module1-introduction-to-sql/buddymove_holidayiq.py

@@ -0,0 +1,26 @@
+import pandas as pd
+import os.path
+import sqlite3
+
+file_path = 'https://archive.ics.uci.edu/ml/machine-learning-databases/00476/buddymove_holidayiq.csv'
+df = pd.read_csv(file_path)
+print(f'DATA FRAME SHAPE : {df.shape}')
+
+BASE_DIR = os.path.dirname(os.path.abspath(__file__))
+DB_FILEPATH = os.path.join(BASE_DIR, 'buddymove_holidayiq.sqlite3')
+
+connection = sqlite3.connect(DB_FILEPATH)
+print("CONNECTION:", connection)
+
+cursor = connection.cursor()
+print("CURSOR", cursor)
+
+df.to_sql(name='review', con=connection)
+
+no_rows = 'SELECT COUNT(*) FROM review'
+result_rows = cursor.execute(no_rows).fetchall()
+print('No. of Rows :', result_rows)
+
+reviews = 'SELECT COUNT(Nature), COUNT(Shopping) FROM review WHERE Nature >= 100 AND Shopping >= 100'
+result_reviews = cursor.execute(reviews).fetchall()
+print('No. of Users Reviewing Nature & Shopping at >= 100 :', result_reviews)

module1-introduction-to-sql/rpg_queries.py

@@ -0,0 +1,33 @@
+import os.path
+import sqlite3
+
+# construct a path to wherever your database exists
+# DB_FILEPATH = 'https://github.com/RAV10K1/DS-Unit-3-Sprint-2-SQL-and-Databases/blob/master/module1-introduction-to-sql/rpg_db.sqlite3'
+BASE_DIR = os.path.dirname(os.path.abspath(__file__))
+DB_FILEPATH = os.path.join(BASE_DIR, 'rpg_db.sqlite3')
+
+connection = sqlite3.connect(DB_FILEPATH)
+print("CONNECTION:", connection)
+
+cursor = connection.cursor()
+print("CURSOR", cursor)
+
+total_char = "SELECT count(character_id) FROM charactercreator_character"
+no_clerics = "SELECT COUNT() FROM charactercreator_cleric"
+no_fighters = "SELECT COUNT() FROM charactercreator_fighter"
+no_mages = "SELECT COUNT() FROM charactercreator_mage"
+no_necro = "SELECT COUNT() FROM charactercreator_necromancer"
+no_thief = "SELECT COUNT() FROM charactercreator_thief"
+total_items = "SELECT (select COUNT(item_id) FROM armory_item) + (select COUNT(item_ptr_id) FROM armory_weapon) AS Total_Items"
+item_count = "SELECT COUNT() FROM armory_weapon"
+char_item = 'SELECT character_id, count(item_id) FROM charactercreator_character_inventory GROUP BY character_id LIMIT 20'
+char_wpn = 'SELECT character_id, count(item_id) FROM charactercreator_character_inventory LEFT JOIN armory_weapon ON item_id = item_ptr_id GROUP BY character_id LIMIT 20'
+avg_char_wpn = "SELECT character_id, COUNT(item_id) as 'No_of_Items',ROUND(AVG(item_id)) FROM charactercreator_character_inventory GROUP BY character_id ORDER BY character_id LIMIT 20"
+avg_char_item = "SELECT character_id, count(item_id), round(avg(item_ptr_id)) FROM charactercreator_character_inventory LEFT JOIN armory_weapon ON item_id = item_ptr_id GROUP BY character_id LIMIT 20"
+
+queries = [total_char, no_clerics, no_fighters, no_mages, no_necro, no_thief,
+            total_items, item_count, char_item, char_wpn, avg_char_item, avg_char_wpn]
+
+for query in queries:
+    result = cursor.execute(query).fetchall()
+    print('Result :', result[0])

module2-sql-for-analysis/.gitignore

@@ -0,0 +1 @@
+.env

module2-sql-for-analysis/.vscode/settings.json

@@ -0,0 +1,3 @@
+{
+    "python.pythonPath": "C:\\Users\\Ravi\\.virtualenvs\\DS-Unit-3-Sprint-2-SQL-and-Databases-kzZYgH90\\Scripts\\python.exe"
+}

module2-sql-for-analysis/Pipfile

@@ -0,0 +1,16 @@
+[[source]]
+name = "pypi"
+url = "https://pypi.org/simple"
+verify_ssl = true
+
+[dev-packages]
+pylint = "*"
+
+[packages]
+python-dotenv = "*"
+psycopg2-binary = "*"
+pandas = "*"
+sqlalchemy = "*"
+
+[requires]
+python_version = "3.7"