This repository contains structured SQL notes, practice queries, and interview questions. Covers DDL, DML, Joins, Subqueries, Constraints, Views, and more. Ideal for beginners, students, and ...

1. How did you handle schema evolution in PySpark when reading data from Snowflake or S3? Schema evolution is handled using the mergeSchema option (for formats like Parquet). In Snowflake, we ...

A couple of months ago, I wrote an article on how to use PowerShell to back up a database within SQL Server Express Edition. Even though the technique that I described in that post works, the script ...

Abstract: Generating accurate SQL from users’ natural language questions (text-to-SQL) remains a long-standing challenge due to the complexities involved in user question understanding, database ...