- Statement "SELECT sum(seq_scan) AS seq, \
- sum(seq_tup_read) AS seq_tup_read, \
- sum(idx_scan) AS idx, \
- sum(idx_tup_fetch) AS idx_tup_fetch \
+ Statement "SELECT coalesce(sum(seq_scan), 0) AS seq, \
+ coalesce(sum(seq_tup_read), 0) AS seq_tup_read, \
+ coalesce(sum(idx_scan), 0) AS idx, \
+ coalesce(sum(idx_tup_fetch), 0) AS idx_tup_fetch \