Foreword:
For work needs, use navicat to add indexes to the data table and organize it into articles for future viewing.
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Analyze common query scenarios, add indexes to fields, and increase query speed.
You can add a single column index and a joint index.
Right click, you can view and add modified indexes in the design table!
Indices must be added according to common query scenarios!
Write a sql statement and test it, and the index is indeed used!
You can determine what index is used by its name!
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