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modern-sql.com | ||
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blog.jooq.org
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| | | | | Everyone knows the SQL SUM() aggregate function (and many people also know its window function variant). When querying the Sakila database, we can get the daily revenue (using PostgreSQL syntax): WITH p AS ( SELECT CAST (payment_date AS DATE) AS date, amount FROM payment ) SELECT date, SUM (amount) AS daily_revenue, SUM (SUM (amount)) OVER | |
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use-the-index-luke.com
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| | | | | MySQL and MariaDB become modern, Parallel PostgreSQL, SQL Server running on Linux, Oracle as cloud-only database, OFFSET in DB2 and row-values in SQLite. | |
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www.sqlshack.com
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| | | | | In this blog post we will show you step by step some tips and tricks for successful Query optimization techniques in SQL Server. | |
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www.dbaglobe.com
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| | | A blog about on new technologie. Hands-on note about Hadoop, Cloudera, Hortonworks, NoSQL, Cassandra, Neo4j, MongoDB, Oracle, SQL Server, Linux, etc. | ||
