RAD Studio VCL Reference
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TriggerReadRow.IsAssignedNull Method (int)

Returns true if value of given column is assigned null.

Pascal
function IsAssignedNull(columnName: string): bool;
function IsAssignedNull(ordinal: Integer): bool;
C++
bool IsAssignedNull(string columnName);
bool IsAssignedNull(int ordinal);

IsAssignedNull has several forms, depending on the input parameter:

  • Returns true if the value in the column named columnName is assigned null. The parameter columnName is the name of the column containing the wanted value.
  • Returns true if the value in the column indicated by its ordinal is assigned null. The parameter ordinal is the ordinal of the column containing the wanted value.

 

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