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This function makes it possible to have a detail of the last error encountered, typically when SqlCod returns SQL_ERRORParameters
[S I S I] SqlDescErr ( SqlDB _db_ )
Return value
_db_ any SqlDB
state will be the SQLSTATE value returned by ODBC
native error is the one coming from the DBMS used
message describes the anomaly
number of lines will be the number processed by UPDATE or DELETE type requests