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Postgres C API

Delete all rows


    // Delete all rows
    {
        res = PQexec(cnxn, "delete from A");
        if (PQresultStatus(res) != PGRES_COMMAND_OK) {
            PQclear(res);
            oops(cnxn, "delete failed");
        }
        printf("Rows deleted: %s\n", PQcmdTuples(res));
        PQclear(res);
    }

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