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MySQL NDB Cluster API Developer Guide
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2.3.28.9 NdbScanFilter::isnull()

Description.  This method is used to check whether a column value is NULL.

Signature. 

int isnull
    (
      int ColId
    )

Parameters.  The ID of the column whose value is to be tested.

Return value.  Returns 0, if the column value is NULL.


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