bionic (3) odbx_column_count.3.gz

Provided by: libopendbx1-dev_1.4.6-11_amd64 bug

NAME
       odbx_column_count - Get the number of columns in the current result set


SYNOPSIS
       #include <opendbx/api.h>

       int odbx_column_count (odbx_result_t* result);


DESCRIPTION
       Returns  the  number  of  columns which belongs to the current result set allocated by odbx_result(). The
       number will never change within a result set with one notable exception: MySQL  returns  all  outstanding
       rows  of  a  previous  result  set  first if they were not fetched completely by odbx_row_fetch() before.
       Therefore, the column count might change in this special situation. It is strongly advised to  fetch  all
       rows  of  a  result set before calling odbx_result() again because other backends will return an error in
       this case.

       The result parameter required by this function must be a valid result set returned by  odbx_result()  and
       must not has been feed to odbx_result_finish() before.


RETURN VALUE
       odbx_column_count()  returns  the number of columns/fields which are available in the current result set.
       The value depends on the column list being part of the SELECT query and it is zero if the query wasn't  a
       SELECT-like query.


ERRORS
       This function will also return zero if the result parameter is invalid.


SEE ALSO
       odbx_column_name(), odbx_column_type(), odbx_result()

                                                 21 October 2016                            odbx_column_count(3)