Leet_sql_1_586. Customer Placing the Largest Number of Orders.ipynb

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    "Table: Orders\n",
    "\n",
    "+-----------------+----------+\n",
    "| Column Name     | Type     |\n",
    "+-----------------+----------+\n",
    "| order_number    | int      |\n",
    "| customer_number | int      |\n",
    "+-----------------+----------+\n",
    "In SQL, order_number is the primary key for this table.\n",
    "This table contains information about the order ID and the customer ID.\n",
    " \n",
    "\n",
    "Find the customer_number for the customer who has placed the largest number of orders.\n",
    "\n",
    "The test cases are generated so that exactly one customer will have placed more orders than any other customer.\n",
    "\n",
    "The result format is in the following example."
   ]
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   "source": [
    "# Write your MySQL query statement below\n",
    "select customer_number\n",
    "from orders\n",
    "group by customer_number\n",
    "order by count(order_number) desc\n",
    "limit 1;\n"
   ]
  }
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