RAD Studio VCL Reference
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TParameter represents a parameter.
TParameter = class(TCollectionItem);
class TParameter : public TCollectionItem;
ADODB
Use the properties and methods of a TParameter to set or get the value of a parameter used in an ADO query, stored procedure, dataset, or command component. Objects that use parameters create TParameter objects to represent those parameters and use a TParameters collection to organize and operate on the TParameter objects. For example, TParameters are used by TADOQuery objects and TADOStoredProc components (in their Parameters properties).
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