Error 147: An aggregate may not appear in the WHERE clause. A beginner was stuck on it for a long time, so here is the simple fix, explained for beginners.
SQL Server emergency? Email pinal@sqlauthority.com with URGENT in the subject line.
SQL SERVER – A Puzzle Part 4 – Fun with SEQUENCE in SQL Server 2012 – Guess the Next Value
Part 4 of my SEQUENCE puzzles uses a DECIMAL sequence that counts down by 1 and cycles. Can you guess the next value SQL Server 2012 returns?
A Letter to the Developer Starting Out
A letter to every developer starting out: it’s fine not to know, your hands learn slower than your head, choose people over perks, keep your promises and keep learning. One day you will be the one standing beside the bench.
Every Way to Learn, and Which One Fits You
There is no single best way to learn a technical craft. Courses, books, reading code, pairing, building, teaching and AI tutors each do one job well. Here is every way to learn, what each is good for and how to choose the one that fits you.
Second-Order SQL Injection: When Stored Data Becomes Code
A safe insert does not make the saved value safe forever. Here is how stored text turns into code later, and the plain fix.
Employee Training Is a Promise Both Sides Keep
Employee training is a promise with two sides. The employer promises time, guidance and room to grow. The developer promises attention, effort and honesty, even on the way out. Here is what each side owes, and why keeping it matters.
Developer Training: The Day School Ends and Learning Begins
Developer training starts the day school ends. A degree opens the workshop door, but the craft is learned at the bench, with real code, real mistakes and someone beside you. Here is why companies and developers should both care.
SQL Server slow? Let's fix it together in about four hours.
In my Comprehensive Database Performance Health Check, you share your screen, I guide you, and we fix your biggest performance troublemakers. No passwords. No remote access.
You keep every script, and the know-how to fix it yourself next time.
Want your whole team to learn it?
My Practical Workshop has no PowerPoint, just live demos. My AI Enablement Workshop shows your team where AI saves hours, and where it quietly costs them.
Over 400 customers have worked with me this way, and not one shared a password. See all consulting options.