TurboDB VCL Component Library



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Contains the parameters for a query's SQL statement.

Delphi syntax:

property Params[Index: Word]: TParams;

C++ syntax:

__property Db::TParams* Params = {read=FParams, write=SetParamsList, stored=false};


Access Params at runtime to view and set parameter names, values, and data types dynamically (at design time use the collection editor for the Params property to set parameter information). Params is a zero-based array of TParams parameter records. Index specifies the array element to access.


An easier way to set and retrieve parameter values when the name of each parameter is known is to call ParamByName. ParamByName cannot, however, be used to change a parameter's data type or name.

Parameters used in SELECT statements cannot be NULL, but they can be NULL for UPDATE and INSERT statements.