31:T515,html`

A query with a diamond, isolated node, and seperated subgraphs:

variable name	variable query
`a`	`some_query()`
`b`	`some_query(arg: vars.a)`
`c`	`some_query(arg: vars.a)`
`d`	`some_query(arg1: vars.c, arg2: vars.b)`
`e`	`some_query()`
`f`	`some_query()`
`g`	`some_query(arg: vars.f)`
`h`	`some_query(arg1: vars.f, arg2: vars.g)`

`32:[] 2f:{"title":"Flux Nested Variables","cells":[{"id":0,"value":"md`# Flux Nested Variables`","pinned":false,"hidden":false,"mode":"ojs"},{"id":139,"value":"md`Variables that reference other variables create a acyclic dependency graph.\n`","pinned":false,"hidden":false,"mode":"ojs"},{"id":11,"value":"html`\n\n

A simple, realistic query:

\n\n \n \n \n \n \n \n \n \n \n \n \n \n

variable name	variable query
`my_bucket` \n	`buckets()` \n
`my_host` \n	`from(bucket: vars.my_bucket)\n \|> range(start: -1m)\n \|> keep(columns: [\"host\"])\n \|> unique(column: \"host\")\n \|> map(fn: (r) => r.host)` \n

`","pinned":false,"hidden":false,"mode":"ojs"},{"id":4,"value":"dot`digraph { my_host -> my_bucket }`","pinned":false,"hidden":false,"mode":"ojs"},{"id":74,"value":"html`\n\n

A more complicated query:

\n\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n

variable name	variable query
`a` \n	`some_query()` \n
`b` \n	`some_query(arg: vars.a)` \n
`c` \n	`some_query(arg: vars.a)` \n
`d` \n	`some_query(arg: vars.c)` \n

`","pinned":false,"hidden":false,"mode":"ojs"},{"id":92,"value":"dot`digraph {\n b -> a\n c -> a\n d -> c\n}`","pinned":false,"hidden":false,"mode":"ojs"},{"id":109,"value":"$31","pinned":false,"hidden":false,"mode":"ojs"},{"id":114,"value":"dot`digraph {\n b -> a\n c -> a\n d -> c\n d -> b\n g -> f\n h -> f\n h -> g\n e\n}`","pinned":false,"hidden":false,"mode":"ojs"},{"id":146,"value":"html`\n\n

The following graph is invalid, since it has a cycle:

\n\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n

variable name	variable query
`a` \n	`some_query(arg: vars.b)` \n
`b` \n	`some_query(arg: vars.c)` \n
`c` \n	`some_query(arg: vars.a)` \n

`","pinned":false,"hidden":false,"mode":"ojs"},{"id":150,"value":"dot`digraph {\n a -> b\n b -> c\n c -> a\n}`","pinned":false,"hidden":false,"mode":"ojs"},{"id":128,"value":"html`

`","pinned":false,"hidden":false,"mode":"ojs"},{"id":2,"value":"dot = require(\"@observablehq/graphviz@0.2\")","pinned":false,"hidden":false,"mode":"ojs"}],"files":"$W32","stdlib":"1","titling":"auto"}