[37/50] tinkerpop git commit: Update compilers.asciidoc

[sp...@apache.org]

Update compilers.asciidoc

Updating documentation:
- fixed optional clause 
- updated optional clause limitation while in nesting with union & order-by
- went through other examples and limitations

Project: http://git-wip-us.apache.org/repos/asf/tinkerpop/repo
Commit: http://git-wip-us.apache.org/repos/asf/tinkerpop/commit/fb5df622
Tree: http://git-wip-us.apache.org/repos/asf/tinkerpop/tree/fb5df622
Diff: http://git-wip-us.apache.org/repos/asf/tinkerpop/diff/fb5df622

Branch: refs/heads/TINKERPOP-1342
Commit: fb5df6229ae5020c098ad551b394acff62e956c9
Parents: 2da9233
Author: Harsh Thakkar <ha...@gmail.com>
Authored: Wed Aug 1 11:27:59 2018 +0200
Committer: Stephen Mallette <sp...@genoprime.com>
Committed: Mon Aug 13 14:39:24 2018 -0400

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 docs/src/reference/compilers.asciidoc | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)
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http://git-wip-us.apache.org/repos/asf/tinkerpop/blob/fb5df622/docs/src/reference/compilers.asciidoc
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diff --git a/docs/src/reference/compilers.asciidoc b/docs/src/reference/compilers.asciidoc
index e015cc8..5b6ab2e 100644
--- a/docs/src/reference/compilers.asciidoc
+++ b/docs/src/reference/compilers.asciidoc
@@ -206,9 +206,8 @@ WHERE { ?person v:label "person" . ?person v:age ?age . ?person v:name ?name . }
 The the variable encountered first will be the ordering decider, i.e. since we have `?person` being encountered first, the result set will be ordered according to the `?person` variable (which are vertex id).
 
 * OPTIONAL
-....
-currently fixing this...
-....
+In the current implementation, `OPTIONAL` clause doesn't work under nesting with `UNION` clause (i.e. multiple optional clauses with in a union clause) and `ORDER-By` clause (i.e. declaring ordering over triple patterns within optional clauses). Everything else with SPARQL `OPTIONAL` works just fine.
+
 
 [[examples]]
 === Examples