May 2019
Intermediate to advanced
442 pages
11h 36m
English
Content preview from Hands-On Infrastructure Monitoring with Prometheus
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Binary operator precedence
When a PromQL query is evaluated, the order in which binary operators are applied is dictated by the operator precedence. The following table shows the precedence order, from higher to lower:
| Precedence | Operator | Description |
|
1 |
^ | Evaluated right to left, for example, 1 ^ 2 ^ 3 is evaluated as 1 ^ (2 ^ 3) |
| 2 | *, /, % | Evaluated left to right, for example, 1 / 2 * 3 is evaluated as (1 / 2) * 3 |
| 3 | +, - | Evaluated left to right |
| 4 | ==, !=, <=, <, >=, > | Evaluated left to right |
| 5 | and, unless | Evaluated left to right |
| 6 | or | Evaluated left to right |
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