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Retrieving Rows with Maximum Date per Group in SQL

In many scenarios, you may need to retrieve rows from a database table where each row … Retrieving Rows with Maximum Date per Group in SQLRead more

database, filtering, grouping, join(), performance optimization, query, rank, row-number, SQL, subquery, window function

Mastering Regular Expressions: Matching Whole Words and Prefixes

Regular expressions are a powerful tool for matching patterns in text. One common task is to … Mastering Regular Expressions: Matching Whole Words and PrefixesRead more

character-classes, grouping, pattern matching, regular expressions, word-boundaries

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

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