Function create_tables

samples/sample_app.py:97–180

Create three tables demonstrating different key schemas.

(client)

# ---------------------------------------------------------------------------

def create_tables(client) -> None:
    """Create three tables demonstrating different key schemas."""
    section("Step 1: Create Tables")

    # Table 1: Simple PK (user profiles)
    print(f"Creating {USERS_TABLE} (simple HASH key)...")
    client.create_table(
        TableName=USERS_TABLE,
        AttributeDefinitions=[
            {"AttributeName": "userId", "AttributeType": "S"},
        ],
        KeySchema=[
            {"AttributeName": "userId", "KeyType": "HASH"},
        ],
        BillingMode="PAY_PER_REQUEST",
    )

    # Table 2: PK + SK (orders by customer)
    print(f"Creating {ORDERS_TABLE} (HASH + RANGE key)...")
    client.create_table(
        TableName=ORDERS_TABLE,
        AttributeDefinitions=[
            {"AttributeName": "customerId", "AttributeType": "S"},
            {"AttributeName": "orderId", "AttributeType": "S"},
            {"AttributeName": "orderDate", "AttributeType": "S"},
        ],
        KeySchema=[
            {"AttributeName": "customerId", "KeyType": "HASH"},
            {"AttributeName": "orderId", "KeyType": "RANGE"},
        ],
        GlobalSecondaryIndexes=[
            {
                "IndexName": "OrderDateIndex",
                "KeySchema": [
                    {"AttributeName": "customerId", "KeyType": "HASH"},
                    {"AttributeName": "orderDate", "KeyType": "RANGE"},
                ],
                "Projection": {"ProjectionType": "ALL"},
            },
        ],
        BillingMode="PAY_PER_REQUEST",
    )

    # Table 3: Multi-part GSI keys (tournament pattern from AWS docs)
    # https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/GSI.DesignPattern.MultiAttributeKeys.html
    print(f"Creating {TOURNAMENT_TABLE} (multi-part GSI keys)...")
    client.create_table(
        TableName=TOURNAMENT_TABLE,
        AttributeDefinitions=[
            {"AttributeName": "matchId", "AttributeType": "S"},
            {"AttributeName": "tournamentId", "AttributeType": "S"},
            {"AttributeName": "region", "AttributeType": "S"},
            {"AttributeName": "round", "AttributeType": "N"},
            {"AttributeName": "bracket", "AttributeType": "S"},
            {"AttributeName": "player1Id", "AttributeType": "S"},
            {"AttributeName": "matchDate", "AttributeType": "S"},
        ],
        KeySchema=[