Are you saying that each of the million CELL rows, references one of 400 sets of weather data (each of which is 7300x9)? And that for each CELL you wish to load the appropriate weather dataset?

yes. Fortunately not all at the same time, but I want to reduce the time to load *all* the data for _a_ cell. The time I am getting as of now is around 30 ms.

Update: Because, in the future (next iteration of the project), the number of cells is going to jump to about 1.9 million, and the size of weather data set might increase (currently we have 20 years of data, hence 20*365=7300 rows). Hence, all the focus on reducing the time to retrieve all the data for any given cell.

--

when small people start casting long shadows, it is time to go to bed

In reply to Re^6: speeding up row by row lookup in a large db by punkish
in thread speeding up row by row lookup in a large db by punkish

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