SQL – Useful Functions SQL has many built-in functions for performing processing on string or numeric data. Following is the list of all useful SQL built-in functions − – The SQL COUNT aggregate function is used to count the number of rows in a database table. – The SQL AVG aggregate function selects the average […]
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SQL – Questions and Answers SQL Questions and Answers has been designed with a special intention of helping students and professionals preparing for various Certification Exams and Job Interviews. This section provides a useful collection of sample Interview Questions and Multiple Choice Questions (MCQs) and their answers with appropriate explanations. Sr.No. Question/Answers Type 1 This […]
SQL – Database Tuning Table of content SQL Database Tuning Database Tuning in SQL is a set of activities performed to optimize a database and prevents it from becoming a bottleneck. There are various techniques with which you can configure the optimal performance of a particular database. Database tuning overlaps with query tuning; so, good […]