This adds more tests for some of the `MV_` functions and updates their
docs now that the railroad diagram and table generated by the tests
covers all of the types.
This prevents `CONCAT` from using an unbounded amount of memory by
hooking it's temporary value into the circuit breaker. To do so, it
makes *all* `ExpressionEvaluator`s `Releasable`. Most of the changes in
this PR just plumb that through to every evaluator. The rest of the
changes correctly release evaluators after their use.
I considered another tactic but didn't like it as much, even though the
number of changes would be smaller - I could have created a fresh,
`Releasable` temporary value for every `Page`. It would be pretty
contained keep the releasable there. But I wanted to share the temporary
state across runs to avoid a bunch of allocations.
Here's a script that used to crash before this PR but is fine after:
```
curl -uelastic:password -XDELETE localhost:9200/test
curl -HContent-Type:application/json -uelastic:password -XPUT localhost:9200/test -d'{
"mappings": {
"properties": {
"short": {
"type": "keyword"
}
}
}
}'
curl -HContent-Type:application/json -uelastic:password -XPUT localhost:9200/test/_doc/1?refresh -d'{"short": "short"}'
echo -n '{"query": "FROM test ' > /tmp/evil
for i in {0..9}; do
echo -n '| EVAL short = CONCAT(short' >> /tmp/evil
for j in {1..9}; do
echo -n ', short' >> /tmp/evil
done
echo -n ')' >> /tmp/evil
done
echo '| EVAL len = LENGTH(short) | KEEP len"}'>> /tmp/evil
curl -HContent-Type:application/json -uelastic:password -XPOST localhost:9200/_query?pretty --data-binary @/tmp/evil
```
Added an implementation for `ends_with` function in esql. `ends_with` -
Returns a boolean that indicates whether a keyword string ends with
another string. Also made sure that the docs look alright:
<img width="1677" alt="Screenshot 2023-09-16 at 18 10 46"
src="eccd81e1-40a2-4a66-a514-cf3e4205f9da">
This adds tests, supported types, and a signature image for `to_string`
and `to_version`. It also fixes the resolution of functions who's names
contain an `_`
Finally, it updates the docs for `ceil` to render the image more nicely.
Add the 'right' function, which extracts a substring beginning from its
right end (opposite function of 'left').
---------
Co-authored-by: Alexander Spies <alexander.spies@elastic.co>
CI will skip building them. Lot's of CI machines don't have font support
so they can't generate these. But all local machine have a GUI so they
can.
Also, super-lazy initialize the font so CI don't bump into it by
accident.
Closes#99018
Add the unary scalar function CEIL.
Analogously to FLOOR, it rounds up its argument.
- Implement CEIL, add it to the function registry and make sure it is serializable.
- Add csv tests, unit tests and docs.
- Add additional csv tests with different data types and some edge cases for both CEIL and FLOOR
- Add unit tests and update docs for FLOOR.
Locks the railroad diagrams to always use the same font, this one named
`roboto mono`. This makes sure that when we render the railroad diagrams
we always size them the same way. Because everyone has a copy of roboto
mono. Because gradle resolves that dependency.
This generates a "railroad diagram" svg image that can be embedded into
the docs for any function to explain it's syntax. It's basic, but it's
something we can iterate on.
It also generates a table of supported types from the list of types that
we test. It can be included in the docs for reference as well.
