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| | boringsql.com
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| | Unlock powerful data analysis in PostgreSQL with window functions. Go beyond aggregates to rank, calculate running totals, and compare rows directly within your queries.
| | sqlserverfast.com
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| | This is part twenty-six of the plansplaining series. And already the fourth episode about window functions. The first of those posts covered basic window functions; the second post focused on fast-track optimization for running aggregates, and the third post explained how the optimizer works around the lack of execution plan support for UNBOUNDED FOLLOWING. But...
| | andreabergia.com
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| | Window functions are an extremely powerful powerful part of the SQL 2003 standard, supported by most modern releases of databases such as Oracle 8+, Postgres 9.1+, SQL Server 2005+ and others. Sadly neither SQLLite or MySql seem to support them yet, but if you are working with a database where they are available, do use them: they can make your life a lot easier. Generally, with window functions, you can write simpler and faster code than you would without.
| | jasonbrimhall.info
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| TSQL Tuesday 51 invite. Betting, risk, and overcoming those bad bets.