grouping – CodeRavo

Grouping Date and Time Data in MySQL

In MySQL, grouping date and time data is a common requirement for analyzing and reporting on … Grouping Date and Time Data in MySQLRead more

date-and-time-functions, grouping, indexing, MySQL, optimization, partitioning

Retrieving Top Records from Each Group in SQL

In this tutorial, we will explore how to retrieve the top record from each group in … Retrieving Top Records from Each Group in SQLRead more

cross-apply, database-normalization, dense-rank, grouping, row-number, SQL, top-1-with-ties, window-functions

Understanding Non-Capturing Groups in Regular Expressions

What are Non-Capturing Groups? Regular expressions (regex) are powerful tools for pattern matching in text. They … Understanding Non-Capturing Groups in Regular ExpressionsRead more

backreferences, capturing-group, grouping, non-capturing-group, optimization, pattern matching, performance, regex, regular-expression

Retrieving Rows with Maximum Values per Group in MySQL

In many database applications, you need to retrieve rows that have the maximum value of a … Retrieving Rows with Maximum Values per Group in MySQLRead more

grouping, MySQL, ranking, SQL, window-functions