1+ hour, 51+ min ago  (416+ words) As a beginner database administrator, my first assignment was to build a school database for Nairobi Academy from scratch. At first this seemed impossible, especially since I had repeated cases of errors in my queries the whole week. But I…...

4+ hour, 50+ min ago  (671+ words) This week I was focused on building a solid foundation in SQL by working with student, subject, and exam result data. Along the way, I explored key concepts like DDL, DML, filtering using WHERE, and transforming data using CASE WHEN....

9+ hour, 8+ min ago  (1653+ words) The Apache Iceberg community is discussing "secondary indexes." This topic is far more complex than it appears on the surface. Adding an index is not a simple engineering problem of "how to store an index file." It requires deep thinking…...

18+ hour, 59+ min ago  (1690+ words) A practical walkthrough of SQL injection techniques, from basic data extraction to advanced blind exploitation. I'm currently doing an offensive security internship, working through Port Swigger's Web Security Academy to sharpen my web application testing skills. SQL injection was the…...

1+ day, 4+ hour ago  (17+ words) How-To Geek...

23+ hour, 29+ min ago  (211+ words) This SQL Question was asked in my product analyst interview. Problem Statement: An E-commerce site is there. we need to find out for each user's first " FRND Product Analyst Interview Question This SQL Question was asked in my product analyst…...

1+ day, 1+ hour ago  (92+ words) If your Bash sessions feel noisy, switch to a repeatable flow: extract signal, verify counts, then clean up artifacts before you close the terminal. I just updated a field note that walks through this with concrete commands, a real troubleshooting…...

21+ hour, 41+ min ago  (1718+ words) CPU wait time (%iowait) spiked from 0. 1% to 14%. Memory was not exhausted. Swap was disabled. Network interfaces were idle. The issue was strictly confined to the block I/O layer and how My SQL's storage engine interacted with the underlying filesystem…...

1+ day, 2+ hour ago  (208+ words) SQL is a language used to store, retrieve, and analyze data in databases. SQL commands are grouped into categories based on their purpose. The main two categories are; DDL (Data Definition Language) vs DML (Data Manipulation Language) explained briefly below…...

1+ day, 12+ hour ago  (74+ words) Deep Learning. AI Question about Ungraded Lab - Improving SQL Generation I have a question about section 3. 1. Use an LLM to Query a Database: It looks like the notebook already know that the SQL query is wrong, even knew exactly the…...