gh-1691 create an overview page about indexes #1847
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This is a draft for now so feel free to let me know if I missed something or wrote something incorrectly |
Co-authored-by: Nick Volynkin <[email protected]>
| * just if you want to | ||
| * if you think that HASH is faster with no performance metering | ||
| * if you want to iterate over the data | ||
| * for primary key |
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Doesn't the first paragraph describe it well?
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The first paragraph contradicts part below - if you really need that 2-5% performance improvement (that means that for some tasks it's more appropriate than TREE) and if you save every byte on tuples (to be honest, it looks like sneer) - yes, for some tasks it's important to save as much memory as possible.
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Ok, let's rewrite if you really need that 2-5% performance improvement as if you measure, that it will give you accountable performance improvement
if you save every byte on tuples (to be honest, it looks like sneer) - yes, for some tasks it's important to save as much memory as possible.
See nothing wrong. In that case HASH is appropriate. "Normal" users should not use hash: it gives in future more problems, than gains.
| * :ref:`Making a functional index with space_object:create_index() <box_space-index_func>` | ||
| * :ref:`Creating an index using field names instead of field numbers <box_space-field_names>` | ||
| * :ref:`Creating an index using the path option for map fields (JSON-path indexes) <box_space-path>` | ||
| * :ref:`Creating an index using the path option with [*] <box_space-path_multikey>` |
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Maybe we should call [*] wildcard?
It's only suggestion and should be discussed.
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There are several wildcard characters. https://support.microsoft.com/en-us/office/examples-of-wildcard-characters-939e153f-bd30-47e4-a763-61897c87b3f4
This one is called an asterisk. But I wouldn't bet that everyone remembers that.
Can we have other wildcards in paths, like ? or #?
Maybe we could say:
Creating an index using the path option with wildcard [*]
Co-authored-by: Ekaterina Kiryanova <[email protected]>
Co-authored-by: Ekaterina Kiryanova <[email protected]>
Co-authored-by: Ekaterina Kiryanova <[email protected]>
Here I tried to revise the information about indexes that we have in docs.
See implemented changes on these pages: