What is optimizer statistics of a table and what is access plan of a query - Database版

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Database版 - What is optimizer statistics of a table and what is access plan of a query

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话题: what话题: optimizer话题: access话题: query话题: statistics

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h****r
发帖数: 2056

professor's requirements: Create a script that1) generates optimizer
statistics on tables,
then2) explains the access plan for a “complex”
query (must access at least 2 tables).
Have no idea of what is this at all.
thanks

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