Easy Solution
SELECT Clause: You want to select specific columns from both the Person and Address tables. These columns include firstName and lastName from the Person table, 
**SELECT Clause**: You want to select specific columns from both the Person and Address tables. These columns include firstName and lastName from the Person table, and city and state from the Address table.\n\n**FROM Clause**: You start by querying the Person table, denoted as p, and you want to perform a left join operation with the Address table, denoted as a.\n\n**LEFT JOIN**: The left join operation ensures that you include all rows from the Person table in the result, even if there\'s no matching entry in the Address table for a specific person.\n\n**ON Clause**: The ON clause defines the condition for joining the two tables. In this case, you join the Person table with the Address table using the personId column as the common attribute. This ensures that you\'re linking the right person with their corresponding address (if available).\n\n**Result**: The result will include all persons from the Person table. For each person, if there is a corresponding address entry in the Address table, the query will fetch the city and state. If there\'s no corresponding address entry (as indicated by the left join), the city and state values will be NULL.\n\n\nThis way, the query gives you a comprehensive overview of each person\'s details along with their associated city and state information, or ***NULL*** values if an address is not available for that person.\n\nThe key to the correct query is to establish the join between the tables based on the personId column, which is the common identifier between the two tables.\n\n\n\n# Code\n```\nSELECT p.firstName, p.lastName, a.city, a.state\nFROM Person p\nLEFT JOIN Address a ON p.personId = a.personId;\n\n\n \n\n```
['MySQL']