MySQL Solution for Combine Two Tables Problem
Intuition\n Describe your first thoughts on how to solve this problem. \nThe goal of this SQL query is to retrieve the first name, last name, city, and state of
# Intuition\n<!-- Describe your first thoughts on how to solve this problem. -->\nThe goal of this SQL query is to retrieve the first name, last name, city, and state of all people in the Person table, along with their corresponding address information from the Address table \n\n# Approach\n<!-- Describe your approach to solving the problem. -->\n1. Use a LEFT JOIN to join the Person table with the Address table on the PersonId column.\n2. Select the FirstName, LastName, City, and State columns from the resulting joined table.\n3. The LEFT JOIN ensures that all rows from the Person table are included in the result, even if there is no corresponding row in the Address table.\n\n# Complexity\n- Time complexity:\n<!-- Add your time complexity here, e.g. $$O(n)$$ -->\nThe time complexity of this query depends on the size of the Person and Address tables and the efficiency of the database engine\'s query optimizer. In general, the time complexity of a LEFT JOIN operation is O(m * n), where m is the number of rows in the left table (Person in this case) and n is the number of rows in the right table (Address in this case). However, the query optimizer may be able to optimize the query execution plan to reduce the actual time complexity.\n\n- Space complexity:\n<!-- Add your space complexity here, e.g. $$O(n)$$ -->\nThe space complexity of this query depends on the size of the result set and the size of the columns being selected. In this case, the result set will have at most as many rows as the Person table, and each row will have four columns (FirstName, LastName, City, and State). Therefore, the space complexity is O(m), where m is the number of rows in the Person table.\n\n# Code\n```\n# Write your MySQL query statement below\nselect FirstName, LastName, City, State from Person as p left join Address as a on p.PersonId = a.PersonId\n```
['MySQL']