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2025-01-17 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Database >
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This article mainly explains the "ORACLE index knowledge points", the article explains the content is simple and clear, easy to learn and understand, the following please follow the editor's ideas slowly in-depth, together to study and learn "what are the ORACLE index knowledge points"!
Summarize the reasons for index failure:
Refer separately to index columns that are not in the first position in the composite index.
The table is not analyzed
The like'% _'% sign comes first (the% sign will not come after it)
Separate > or
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