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esProc Helps with Computation in MongoDB – Query Indexes in an Array

MongoDB can find out elements of a built-in array according to their indexes, but cannot find the indexes through the values of the elements. For example, the elements of an array are names of people stored according to their rankings. In MongoDB, names can be found according to the rankings (indexes of the array), but the values of rankings cannot be determined through names. esProc can help MongoDB in realizing this operation. The following example will teach you how it works in…

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Added by Lynn Guo on November 19, 2014 at 6:30pm — No Comments

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