Well, of course, that doesn't work, as Calculate is very restricted.
I have set up something with a Python API package, notion-client.
This one seems good enough:-
Then I can get a JSON string result back of the whole database, but perhaps I can control that, though.
I can search within the string like this:-
pprint(my_page["results"][0]["properties"]["Keyword Autofill"]["rich_text"][0]["text"]["content"])
Which gives me more or less what I want. In my case, it is this, with each comma-separated group the phrase I'm interested in:-
('Keywords: LaMini, LLM, LangChain, transformers, pipelines, summarization, '
'Google Colab, AI, models, code snippets, python, diagrams, installation, '
'text summarization, Hugging Face pipelines, text splitter, CPU, document '
'interaction, distilling knowledge, fine-tuning, large language models, NLP '
'benchmarks, encoder-decoder, decoder-only families, Devansh, machine '
'learning, Bigger models, data processing, curation, solid dataset, Markdown, '
'PDF, video transcript, Youtube subtitles, interactive documents, text '
'documents, copy/paste, vectors, vector store indexes, database, Jupyter '
'Notebook, dependencies, faiss-cpu, sentence_transformers, chromadb, Cython, '
'tiktoken, rich, SSL, pytube, YouTube, SRT format, regex function, text '
'cleanup, textwrap, API, access token, text files, local machine, evaluation, '
'document loaders, character text splitter, HuggingFace embeddings, FAISS, '
'ChatGPT, Prompt, Feature, Risk, AWS.')
From which I can do what I want, I expect.