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New posts in sql-tuning

Query Tuning - Advice

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Using Oracle build-in UPPER function in WHERE lead to bad performance of SELECT statement?

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Oracle: hugely improve query performance

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Is using OR clause in MySQL SELECT statement a generally bad idea?

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What are the performance implications of Oracle IN Clause with no joins?

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Merge join CARTESIAN

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Please help me optimize this MySQL SELECT statement

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Query statement consume quite long time on execution on oracle

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need to tune this sql query to improve performance

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What is the meaning of Cost, Cardinality and Bytes in Explain Plan? [closed]

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Does "TABLE ACCESS BY INDEX ROWID" means optimizer using index or table?

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Is MySQL naturally slow at this kind of query, or do I have it misconfigured?

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How to find out why the status of a spid is suspended? What resources the spid is waiting for?

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