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use-the-index-luke.com | ||
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modern-sql.com
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| | | | | LISTAGG is the new SQL standard version of GROUP_CONCAT or STRING_AGG. LISTAGG supports DISTINCT and provides an ON OVERFLOW clause to control the behavior when exceeding the maximum string length. | |
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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. | |
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dioncho.wordpress.com
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| | | | | One of the customers complained that Oracle refuses to use the HASH GROUP BY operation under any circumstances. It's 10gR2(10.2.0.1) database. See that Oracle simply refuses to use HASH GROUP BY operation even with the simplest group by? You might think that the "_gby_hash_aggregation_enabled" would have been false which is clearly right. But even with... | |
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power2build.wordpress.com
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| | | Another tool to help with SQL Tuning? Yes! Hopefully with some advantage over what you used until today :-) Collecting diagnostics around a SQL is not fun, if you've been there you know that.... Source: SQLd360, SQL diagnostics collection made faster | ||
