Marios Trivyzas b594e81c86
SQL: Fix issue with field names containing "." (#37364)
Adjust FieldExtractor to handle fields which contain `.` in their
name, regardless where they fall in, in the document hierarchy. E.g.:

```
{
  "a.b": "Elastic Search"
}

{
  "a": {
    "b.c": "Elastic Search"
  }
}

{
  "a.b": {
    "c": {
      "d.e" : "Elastic Search"
    }
  }
}
```

Fixes: #37128
2019-01-15 09:41:41 +02:00
..

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