Function duckdb_appender_column_count

pub unsafe extern "C" fn duckdb_appender_column_count(
    appender: duckdb_appender,
) -> idx_t

Returns the number of columns that belong to the appender. If there is no active column list, then this equals the table’s physical columns.

@param appender The appender to get the column count from. @return The number of columns in the data chunks.