[Docs] Improvements in script-fields.asciidoc (#28174)
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@ -65,8 +65,8 @@ It's important to understand the difference between
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using the doc keyword, will cause the terms for that field to be loaded to
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memory (cached), which will result in faster execution, but more memory
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consumption. Also, the `doc[...]` notation only allows for simple valued
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fields (can't return a json object from it) and make sense only on
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non-analyzed or single term based fields. However, using `doc` is
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fields (you can't return a json object from it) and makes sense only for
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non-analyzed or single term based fields. However, using `doc` is
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still the recommended way to access values from the document, if at all
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possible, because `_source` must be loaded and parsed every time it's used.
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Using `_source` is very slow.
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