The generated queries when selecting multiple tags are incorrect. In
InfluxQL, `AND` has a higher precedence than `OR` so the condition:
WHERE "hostname" = 'server1' OR "hostname" = 'server2' AND time > now() - 5m
This is parsed as if it were:
WHERE "hostname" = 'server1' OR ("hostname" = 'server2' AND time > now() - 5m)
But the intention is to write a query like this:
WHERE ("hostname" = 'server1' OR "hostname" = 'server2') AND time > now() - 5m
This change modifies the generated query so it surrounds a query with
multiple conditions in parenthesis so it doesn't conflict with the time
expression in an unexpected way.
This is currently not an issue because InfluxDB doesn't actually
evaluate the condition for the time expression correctly. It just looks
through the AST for anything that looks like a time expression and then
assumes the proper format of `AND` was used rather than validating that
it was used correctly.
Raw query results would return as expected. But when appending new series to pointsBySeries map, order of keys is random. So I've added a list to keep track of series order. Should implement FIFO rules.
* $__timeFrom() -> Returns the dashboard 'from' suitable for use querying
against a MySQL TIMESTAMP field.
* $__timeTo() -> Returns the dashboard 'to' suitable for use querying
against a MySQL TIMESTAMP field.
* $__unixEpochFiler(column) -> If you store timestamps as UNIX epoch's,
this builds: column > 'from' AND column < 'to'
* $__unixEpochFrom() -> Returns the dashboard 'from' suitable for use querying
against a MySQL integer field (UNIX epochs)
* $__unixEpochTo() -> Returns the dashboard 'to' suitable for use querying
against a MySQL integer field (UNIX epochs)
* Fix timeInterval for mysql datasource
This changes the > to >= and the < to <=, so the intervals are inclusive.
This should fix the #8635
* Fix validation
