odbx_column_count(3)                OpenDBX               odbx_column_count(3)

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()

                                  11 May 2023             odbx_column_count(3)