A Study on Database Fuzzy Query Method in SQL

The previous work analyzes its simplicity, inquires the multi-relational query, inquires composite inquires, sub-query etc, so as to solve the problem of the influence of fuzzy to some extent. However, logical connection always or Zadeh Based on fuzzy logic, this paper introduces the fuzzy theory and the relationship of the weight to the extended fuzzy query. This kind of fuzzy inquires the solved here through the fuzzy theory and the function of the SQL combination, which will improve the fuzzy inquiry system, so that the query will be more effective.