Fix database (dead|live) tuples queries

diogonicoleti · diogonicoleti · commit 91cb00c9cf15 · 2018-07-26T15:17:00.000-03:00
diff --git a/gauges/table_rows.go b/gauges/table_rows.go
@@ -50,7 +50,7 @@ func (g *Gauges) DatabaseDeadRows() prometheus.Gauge {
 			Help:        "Estimated number of dead rows in a database",
 			ConstLabels: g.labels,
 		},
-		"SELECT sum(coalesce(n_dead_tup, 0)) as n_dead_tup FROM pg_stat_user_tables",
+		"SELECT coalesce(sum(n_dead_tup), 0) as n_dead_tup FROM pg_stat_user_tables",
 	)
 }
 
@@ -98,6 +98,6 @@ func (g *Gauges) DatabaseLiveRows() prometheus.Gauge {
 			Help:        "Estimated number of live rows in a database",
 			ConstLabels: g.labels,
 		},
-		"SELECT sum(coalesce(n_live_tup, 0)) as n_live_tup FROM pg_stat_user_tables",
+		"SELECT coalesce(sum(n_live_tup), 0) as n_live_tup FROM pg_stat_user_tables",
 	)
 }

Original file line number	Diff line number	Diff line change
`@@ -50,7 +50,7 @@ func (g *Gauges) DatabaseDeadRows() prometheus.Gauge {`
`50`	`50`	`Help: "Estimated number of dead rows in a database",`
`51`	`51`	`ConstLabels: g.labels,`
`52`	`52`	`},`
`53`		`- "SELECT sum(coalesce(n_dead_tup, 0)) as n_dead_tup FROM pg_stat_user_tables",`
	`53`	`+ "SELECT coalesce(sum(n_dead_tup), 0) as n_dead_tup FROM pg_stat_user_tables",`
`54`	`54`	`)`
`55`	`55`	`}`
`56`	`56`
`@@ -98,6 +98,6 @@ func (g *Gauges) DatabaseLiveRows() prometheus.Gauge {`
`98`	`98`	`Help: "Estimated number of live rows in a database",`
`99`	`99`	`ConstLabels: g.labels,`
`100`	`100`	`},`
`101`		`- "SELECT sum(coalesce(n_live_tup, 0)) as n_live_tup FROM pg_stat_user_tables",`
	`101`	`+ "SELECT coalesce(sum(n_live_tup), 0) as n_live_tup FROM pg_stat_user_tables",`
`102`	`102`	`)`
`103`	`103`	`}`