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One of the most practical uses of SQL (Structured Query Language) is in financial tracking, in this case, we will be looking at using SQL to build a Household Budget Tracker. SQL is a programming language specifically designed for managing and manipulating databases. This blog will guide you in creating a simple yet effective budget tracker using SQL.
Creating The Database
First off, we need to create our database. This is where we are going to store all of our data about income and expenses.
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CREATE DATABASE BudgetTracker; |
Creating Tables
Now, let’s create our tables for income and expenses.
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USE BudgetTracker; CREATE TABLE Income( ID INT PRIMARY KEY, Description VARCHAR(255), Amount DECIMAL(10, 2), IncomeDate DATE ); CREATE TABLE Expenses( ID INT PRIMARY KEY, Description VARCHAR(255), Amount DECIMAL(10, 2), ExpenseDate DATE, Category VARCHAR(255) ); |
Inserting Data
Let’s insert some data into our tables.
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INSERT INTO Income(ID, Description, Amount, IncomeDate) VALUES (1, 'Monthly Salary', 5000, '2021-10-01'); INSERT INTO Expenses(ID, Description, Amount, ExpenseDate, Category) VALUES (1, 'Groceries', 200, '2021-10-02', 'Food'), (2, 'Rent', 1000, '2021-10-01', 'Housing'); |
Running Queries
Now that we have our data in place, we can start to perform queries on it. For instance, if we want to know how much money was made and spent in October, we could run the following commands:
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SELECT SUM(Amount) as TotalIncome from Income WHERE MONTH(IncomeDate) = 10 AND YEAR(IncomeDate) = 2021; SELECT SUM(Amount) as TotalExpenses from Expenses WHERE MONTH(ExpenseDate) = 10 AND YEAR(ExpenseDate) = 2021; |
Conclusion
By following these steps and learning to write these queries, you’ll be well on your way to building your SQL-driven household budget tracker. From here, you can extend this basic structure to fit your individual needs, scale it up, add more complex queries, and so on. Learning SQL can empower you to take control of your data and use it in the ways that you find most useful.