Returns column format
Returns column name by field number
Returns column number by field name
Returns row of cells
Returns column Oid
Commonly this is just the name of the command, but it might include additional data such as the number of rows processed. The caller should not free the result directly. It will be freed when the associated PGresult handle is passed to PQclear.
Returns column count
Returns row count
Contains result of query with valid data answer