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package metricsql_test
import (
"fmt"
"log"
"github.com/VictoriaMetrics/metricsql"
)
func ExampleExpandWithExprs() {
// mql can contain arbitrary MetricsQL extensions - see https://docs.victoriametrics.com/metricsql/
mql := `WITH (
commonFilters = {job="$job", instance="$instance"},
f(a, b) = 100*(a/b),
)
f(disk_free_bytes{commonFilters}, disk_total_bytes{commonFilters})`
// Convert mql to PromQL
pql, err := metricsql.ExpandWithExprs(mql)
if err != nil {
log.Fatalf("cannot expand with expressions: %s", err)
}
fmt.Printf("%s\n", pql)
// Output:
// 100 * (disk_free_bytes{job="$job",instance="$instance"} / disk_total_bytes{job="$job",instance="$instance"})
}
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