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MySQL NDB Cluster API Developer Guide
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2.3.17.4 Ndb_cluster_connection::get_latest_error()

Description.  This method can be used to determine whether or not the most recent connect() attempt made by this Ndb_cluster_connection succeeded . If the connection succeeded, get_latest_error() returns 0; otherwise, it returns 1. If the connection attempt failed, use Ndb_cluster_connection::get_latest_error_msg() to obtain an error message giving the reason for the failure.

Signature. 

int get_latest_error
    (
      void
    ) const

Parameters.  None.

Return value.  1 or 0. A return value of 1 indicates that the latest attempt to connect failed; if the attempt succeeded, a 0 is returned.