SQL has become a powerful tool for data analysis and manipulation of data. The EOMONTH() function returns the last day of the month of a specified date. EOMONTH() can be used as a worksheet function (WS) in Excel. However, to get the last day of previous month in SQL can be achieved with the following SQL …
What is Performance tuning Performance tuning in SQL is the practice of ensuring SQL queries run as fast as possible. SQL Performance tuning can be difficult, especially when working with large amount of data. SQL performance tuning is handled by Database Administrators (DBA’s) in large corporations. However, to improve the speed of data retrieval with …
The understanding of data trends, patterns, attributes and its relationship to human behavior and business is a result of data-driven cycle in analytics. Data Science revolves around data. We associate quarterly and annual growth of businesses based on data received which are facts to help make business decisions. Most improved business methodologies are data-driven. So, …
SQL (Structured Query Language) is a vital skill for a career in analytics, Big Data, databases and Data Science. As a go-to tool for pulling and manipulating data in a database, we have listed and explained top 50 interview questions in SQL from basic to advanced questions. These interview questions will equip you for any …
What is Data Data is a collection of words, images, sound, letters and observations for analysis, reference and research purpose. What is Redundancy in Data Data redundancy is the duplication of data in a table or database. When data is duplicated we consume more memory space in storage devices . Back-up storage devices can be …