Description: mainly for flexible and reliable generation of arbitrary complexity of the DataWindow Filter phrase or SQL Select statement, Where the inquiries conditions. The core technology is the use of object-oriented methods to the analysis of the SQL SELECT statement syntax structure, broad-based expression of the type of object-oriented models (including fields, constants, functions, since the definition of binary expression and expression of the object). The query interface, users can create, destroy, or combination split these objects, constructed complex and diverse expression tree, the effective realization of a dynamic database inquiries.
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