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Sorting Data by Input in SQLite with Python

Learn how to effectively sort data in an SQLite database using Python by inputting dates, with a detailed code example and explanation. --- This video is based on the question https://stackoverflow.com/q/74824485/ asked by the user 'SiemowitJarilo' ( https://stackoverflow.com/u/19939701/ ) and on the answer https://stackoverflow.com/a/74824603/ provided by the user 'Ghassen Sultana' ( https://stackoverflow.com/u/12986294/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions. Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: How to sorting data by input? Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l... The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license. If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com. --- Sorting Data by Input in SQLite with Python: A Step-by-Step Guide Working with databases can be challenging, especially when it comes to querying and sorting data based on specific criteria. One common task that many developers face is how to sort data by input in an SQLite database using Python. In this guide, we will explore a scenario where a developer is trying to sort and sum data based on date inputs, and we will provide a clear, improved solution. The Problem: Sorting Data in SQLite Imagine you have a database called kalendarz where you store various data entries, including a column named Wartość (which means "Value" in Polish) and a column Data (meaning "Date"). Your goal is to calculate the sum of the Wartość column for a specified date range input by the user. However, the original code contains some issues that prevent it from functioning as intended. Here’s a snippet from the developer's initial attempt: [[See Video to Reveal this Text or Code Snippet]] Clearly, there are a few mistakes here, such as the incorrect use of placeholders and a lack of ordering in the results. The Solution: A Revised Approach To correctly sort data based on the user’s input for date ranges, we can revise the SQL query. Below, we break down the necessary changes and improvements: 1. Accept User Input for Dates We start by collecting the date inputs from the user. This is done using the input() function. 2. Update the SQL Query The primary issues in the original query are: The use of placeholders and values incorrectly. The missing ORDER BY clause to sort the results by date. Here is the corrected code: [[See Video to Reveal this Text or Code Snippet]] 3. Explanation of the Correct Code User Input: We prompt the user to input two date strings which define the range for our query. SQL Query Breakdown: SUM Function: If needed, you can also use SUM(Wartość) to get the total value for that range. BETWEEN Clause: This is utilized to filter results that fall between the specified dates. ORDER BY: This clause sorts the results based on the Data column in ascending order. 4. Executing the Query After making these changes, your query will not only retrieve results correctly but also sort them in the order you expect. Don’t forget to close the cursor and handle exceptions where necessary to ensure your program runs smoothly! Conclusion Sorting data by input in an SQLite database using Python is a straightforward task when you follow the correct query structure. By modifying the original code, we can ensure that the data retrieval works as intended, providing a clear, sorted list based on user-defined date ranges. Now you can use this approach in your projects when working with databases! For any further questions or clarifications, feel free to ask in the comments below.