# Many databases (like MySQL, or Postgres prior to 8.1) will only use a single index per table, per query, so make sure you have indexes defined for the column combinations that you will query on frequently. A common mistake is to define an index on “us
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# Many databases (like MySQL, or Postgres prior to 8.1) will only use a single index per table, per query, so make sure you have indexes defined for the column combinations that you will query on frequently. A common mistake is to define an index on “us
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Buckblog: Indexing for DB performance
The maze book for programmers! mazesforprogrammers.com Algorithms, circle mazes, hex grids, masking, weaving, braiding, 3D and 4D grids, spheres, and more! DRM-Free Ebook Isn’t Rails great? It make...
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