DB2 SQL is a popular and top queried language. I have explained the top five SQL tricky questions in this post.
Category: SQL
I have provided the resolution for ‘Missing IN or OUT parameter at index: 1’ in this post. Useful for all SQL developers.
Creating more indexes is a bad idea. This post covers how to answer this question in an interview. Just use unique indexes in where clause. So you can avoid creating more indexes.
I have shared the Common Table expression of advanced SQL. You can save a lot of CPU time. And you can improve query performance.
Explained the complete features of SQL Aggregate functions.
DATE calculation in SQL is tricky. Sometimes you need to find Day name, Day of the week, and Next Day Date. These example SQL queries useful for you.
This post covers how to use WHERE and DELETE in sub-queries. Useful examples to refer to quickly.
