What can cause java.sql.Statement#executeBatch to return SUCCESS_NO_INFO as one of its values? -

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in documentation of java.sql.statement#executebatch, states 1 of possible values of elements in returned int array can be:

a value of success_no_info -- indicates command processed number of rows affected unknown

so it's pretty clear value means if it. however, on particular set of queries trying execute batch (which perform updates, nothing fancy), result array of calling method contains only success_no_info values. inspires me beg question: causes successful query execution, leaves behind no information success? can't find documentation on particular topic.


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