Document hive storage table properties #10817
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This is wrong. The properties are NOT catalog properties .. they are table properties .. |
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Pretty sure there are more table properties. Check in #8905 and maybe in the code and/or a running system |
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I wonder if it makes sense to move the table properties and "runtime" properties in general to a different page. If I were to place these anywhere it might be below the static config file properties. That seems really out of the way though and buried. Just one thought, let's split config file props and runtime props on different pages. |
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While that is a feasible approach and the Hive connector page is in dire need of refactor and such .. I dont want to take this work into the scope of this PR. We just want to document the table properties, explain what they are and a bit how to use them |
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@hashhar I reviewed this now and @rosewms will address various comments. However I have a question left ... in this PR we document table properties ... do we need another section for schema properties? Or are they the same? If they are the same then we should add that they are also honoured for |
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Schema properties are separate. See https://trino.io/docs/current/sql/create-schema.html#description for how to find them. |
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| - The serialization format for ``NULL`` value. Requires TextFile, RCText, | ||
| or SequenceFile format. |
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Just for information - null_format can be set to a string that is then interpreted as a marker for NULL values in table files.
e.g. with null_format = 'NULL_VALUE_MARKER' and a TextFile table with some line like a\u0001NULL_VALUE_MARKER\u0001null value would get read as 3 columns a, NULL and null value.
If we want to document this it should be a separate effort - not part of this PR.
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@mosabua how should I proceed here?
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We should create an issue to follow up IMO?
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Yay @rosewms! Thanks for finishing this! |
Issue: #5581