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Understanding Subquery and Common Table Expressions(CTEs)
17+ hour, 3+ min ago (22+ words) What is a Subquery? A subquery is simply a select statement written inside another select statement. .. . Tagged with beginners, database, sql, tutorial....
You Want To Learn SQL? Here Is What I know So far. ..
13+ hour, 15+ min ago (89+ words) SQL: What is it? First of all, it stands for Structured Query language. It is one of the. .. Tagged with sql, data, analytics, beginners....
I indexed 17, 341 polynomial fan curves in Postgres and matched a duty point in
17+ hour, 31+ min ago (482+ words) Most B2 B HVAC catalogs publish fan performance curves as scanned PDFs. Engineers do the interpolation by eye when they need to know "will this fan deliver 5, 000 m/h at 350 Pa?" " they overlay the operating point on the curve image and…...
Why developers are betting on Postgres for AI
1+ day, 15+ hour ago (994+ words) Everyone, it seems, is rushing to build AI applications and agents, seeking new tools to support everything from customer support to internal document retrieval." But to work reliably, AI applications and agents need access to existing enterprise data, like customer…...
archery-cli: Connect AI Tools to Your SQL Audit Platform
1+ day, 19+ hour ago (264+ words) At my company, we use Archery for SQL audit and read-only queries against our databases. Archery has a nice web UI, but our AI tools (Claude Code, Cursor, Chat GPT) cannot use a web UI. So I built archery-cli: a…...
Automating Essential Eight Compliance Checks with Power Shell
2+ day, 3+ hour ago (642+ words) Version 1. 0. 0 If you work in Australian IT, cybersecurity, or digital forensics, you've encountered. .. Tagged with powershell, security, compliance, australia....
Chat With Your Database Template
2+ week, 6+ day ago (185+ words) Common issues and fixes Security checklist before going live Prompt (user): "How many orders were placed this month?" Output: Short sentence with the count from a SELECT aggregate scoped to the current month (per your created_at column naming). Example 2: Recent rows…...
"Beating 250, 000 Mental Comparisons: A Cross-Domain Engineer's Entity Resolution Case Study"
2+ day, 21+ hour ago (1310+ words) Many companies maintain the same business entities across multiple systems. These pairs need periodic reconciliation. In the technical literature this is Entity Resolution or Data Reconciliation " a universal problem that nearly every mid-to-large business hits eventually. The case study here…...
Grouping Data to Find Patterns
2+ day, 20+ hour ago (618+ words) You have 10, 000 rows of sales data. You do not care about 10, 000 rows. You care about one question. Which region had the highest average sale value last quarter? To answer that, you need to group all the rows by region, then…...
Filtering Rows and Selecting Columns (The Right Way)
2+ day, 21+ hour ago (553+ words) You know df["column"] selects a column. But in real analysis, you need surgical precision. Give me rows 50 through 200 where salary is above the median and department is not Sales, and only show me the name, age, and salary columns....