This is generally the case with any caching or memoizing strategy: if the cached results are never re-used, then caching is an overhead. But still, there are many many cases where caching really make sense, it can sometimes transform a quadratic (and sometimes even exponential) algorithm into a linear one. Sometimes it is easy enough to analyze to figure out; in other cases, only benchmark can tell.

Je suis Charlie.

In reply to Re^7: Dynamic SQL by Laurent_R
in thread Dynamic SQL by Anonymous Monk

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