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News
Which SQL Database Should You Install?
3+ week, 2+ day ago (1204+ words) By Michael Nocito, data analyst · Published August 7, 2026 If you want to write SQL against your own...
How to Find Duplicate Rows in SQL (and Decide What Counts as One)
3+ week, 2+ day ago (1535+ words) By Michael Nocito, data analyst · Published August 7, 2026 By the end of this page you can check any...
How to Connect Python to a SQL Database (Straight Into a DataFrame)
3+ week, 2+ day ago (1390+ words) By Michael Nocito, data analyst · Published August 8, 2026 By the end of this page you will run a SQL...
Excel Just Summed Your ID Numbers and Said Nothing
3+ week, 2+ day ago (788+ words) By Michael Nocito, data analyst · Published August 7, 2026 This article gives you the test that catches...
How to Practice SQL Online With Nothing Installed (And Where Your Data Goes)
3+ week, 2+ day ago (1391+ words) By Michael Nocito, data analyst · Published August 8, 2026 By the end of this page you will be running...
Excel Dynamic Arrays: FILTER, UNIQUE and SORT in One Formula
3+ week, 1+ day ago (1867+ words) By Michael Nocito, data analyst · Published August 8, 2026 By the end of this page you can pull a distinct...
Customer Segmentation in SQL With CASE WHEN
3+ week, 2+ day ago (1832+ words) By Michael Nocito, data analyst · Published August 8, 2026 By the end of this page you can turn a table...
How to Connect Excel to a SQL Database (And Stop Pasting)
3+ week, 2+ day ago (1843+ words) By Michael Nocito, data analyst · Published August 8, 2026 By the end of this page your spreadsheet will...
Excel Drop Down Lists and Data Validation, and the Paste That Removes Them
3+ week, 1+ day ago (1811+ words) By Michael Nocito, data analyst · Published August 8, 2026 By the end of this page you can put a dropdown...
NULL in SQL: Why = NULL Finds Nothing and What to Write Instead
3+ week, 2+ day ago (1228+ words) By Michael Nocito, data analyst · Published August 7, 2026 By the end of this page you can predict what...