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• #7775 biker nagyúr Sk8erPeter #7720

  Új Válasz 2011-12-02 21:22:50 #7775

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  biker

  nagyúr

  válasz Sk8erPeter #7720 üzenetére

  ó, mondhatni shitfuck

  Tudod,mi volt a baj? 4 soros tábla volt a tesztalany.
  és ekkor ez a bibi:

  The search result is empty because the word “MySQL” is present in at least 50% of the rows. As such, it is effectively treated as a stopword. For large data sets, this is the most desirable behavior: A natural language query should not return every second row from a 1GB table. For small data sets, it may be less desirable.

  A word that matches half of the rows in a table is less likely to locate relevant documents. In fact, it most likely finds plenty of irrelevant documents. We all know this happens far too often when we are trying to find something on the Internet with a search engine. It is with this reasoning that rows containing the word are assigned a low semantic value for the particular data set in which they occur. A given word may reach the 50% threshold in one data set but not another.

  The 50% threshold has a significant implication when you first try full-text searching to see how it works: If you create a table and insert only one or two rows of text into it, every word in the text occurs in at least 50% of the rows. As a result, no search returns any results. Be sure to insert at least three rows, and preferably many more. Users who need to bypass the 50% limitation can use the boolean search mode; see Section 11.9.2, “Boolean Full-Text Searches”.

  Bármire kerestem, 2-ször vagy többször szerepelt
  

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