working on week 1

Author: moshesham

scripts/build_book.sh scripts/bash/build_book.shscripts/build_book.sh renamed to scripts/bash/build_book.sh

@@ -0,0 +1,24 @@
+import duckdb
+import os
+
+DB_FILE = 'data/connectsphere.duckdb'
+RAW_DATA_DIR = 'data/raw'
+
+# Remove old database file if it exists to ensure a fresh start
+if os.path.exists(DB_FILE):
+    os.remove(DB_FILE)
+
+con = duckdb.connect(database=DB_FILE, read_only=False)
+
+print("Database created. Creating tables...")
+
+# Create tables from Parquet/CSV files
+con.execute(f"CREATE TABLE events AS SELECT * FROM read_parquet('{RAW_DATA_DIR}/events.parquet');")
+con.execute(f"CREATE TABLE users AS SELECT * FROM read_parquet('{RAW_DATA_DIR}/users.parquet');")
+con.execute(f"CREATE TABLE reviews AS SELECT * FROM read_csv_auto('{RAW_DATA_DIR}/app_store_reviews.csv');")
+
+print("Tables created successfully:")
+print(con.execute("SHOW TABLES;").fetchdf())
+
+con.close()
+print("Database initialization complete.")