sql tunning

last_zhiyin9 天前
数据库·sql·oracle·sql tunning
Oracle sql tuning guide 翻译 Part 6-5 --- Hint使用报告的操作方法和例子You can use the DBMS_XPLAN display functions to report on hint usage.
last_zhiyin1 个月前
数据库·sql·oracle·sql tunning
Oracle sql tuning guide 翻译 Part 6-4 --- Hint使用准则和Hint使用报告In some cases, you can specify join order hints in a SQL statement so that it does not access rows that have no effect on the result.
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