- Query "SELECT sum(heap_blks_read), sum(heap_blks_hit), \
- sum(idx_blks_read), sum(idx_blks_hit), \
- sum(toast_blks_read), sum(toast_blks_hit), \
- sum(tidx_blks_read), sum(tidx_blks_hit) \
+ Statement "SELECT sum(heap_blks_read) AS heap_read, \
+ sum(heap_blks_hit) AS heap_hit, \
+ sum(idx_blks_read) AS idx_read, \
+ sum(idx_blks_hit) AS idx_hit, \
+ sum(toast_blks_read) AS toast_read, \
+ sum(toast_blks_hit) AS toast_hit, \
+ sum(tidx_blks_read) AS tidx_read, \
+ sum(tidx_blks_hit) AS tidx_hit \