Context Briefing: The CE's job is to use statistics to determine how many rows will come back for any given operation in a query plan. When building indexes for your queries, the order of your index key columns matters.
Cardinality In Sql Server Postgres Mysql Oracle - General Follow-Up Tips
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General Follow-Up Tips
The CE's job is to use statistics to determine how many rows will come back for any given operation in a query plan. When building indexes for your queries, the order of your index key columns matters.
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Main details to review
- When building indexes for your queries, the order of your index key columns matters.
- The CE's job is to use statistics to determine how many rows will come back for any given operation in a query plan.
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