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RAD Studio VCL Reference
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TDBXInt64Value.IsNull Method
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RAD Studio VCL Reference
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Returns true if the value is null.
function IsNull: Boolean; override;
virtual __fastcall Boolean IsNull();
Returns true if the value is null. This method should be called before calling any of the Get methods. If the value is null, the Get methods will throw TDBXError exception if they are called.
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Description