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Parameterized queries

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Hello,

I would like to be able to use an attribute of the parent block when writing an SQL query in an embed block. For the sake of example, consider I am in the document Trip to the Moon and I want to make a query that collects links to it. I would write

select b.* from blocks as b where b.content like "%trip to the moon%" order by updated desc

But I am already in Trip to the Moon (a document or a parent block with that name), so ideally I would like to grab the current document's title/name. I would like to replace the literal string "%trip to the moon%" with something like :parent.title. How can I achieve this?

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alvorithm 10 months

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Parameterized queries

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ciwoyipang • 7 months

思源 SQL 新人指南：SQL 语法 + Query + 模板 - 链滴 (ld246.com)

SQL&Query 用法记录 - 链滴 (ld246.com)

The above are two high-quality introductory articles from the Chinese community, which you may find readable using a translation tool.

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Knuex • 7 months
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Is there any way to view that page without registering? @88250

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alvorithm • 10 months
VIP Warrior Author

Dear @ciwoyipang, thank you so much for making me aware of the query widget. It is a very featureful extension. But I think I did not describe my need clearly. What I am after is that the query block asks its parent for the text "trip to the moon", i.e. that string in the query should be generated automatically from the context.

select * from blocks as b where b.content like "%insert here the title or the name of the parent block%"

So if I put this query inside a document named "The mother of all queries" it would automatically fill in the value and execute

select * from blocks as b where b.content like "%The mother of all queries%"

Do you have an idea on how to customize queries based on the context of the query block (e.g. the parent, or the preceding block)?

PS. in order to have the type column values translated, is it necessary to do it in Siyuan or in the widget code?
88250 • 7 months
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