BBBinary BuddiesDevelopmentSep 1, 20265 min read1 view

Group Rows by Name with Index Ranges in PostgreSQL

Grouping rows by a non-unique name while preserving order and gaps in indexes is a common SQL challenge. This article explains how to solve the 'gaps and islands' problem using PostgreSQL, providing both the gaps and islands method and a more concise range aggregation approach.

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data groupinggaps-and-islandspostgresqlrange aggregationrow indexingsql

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