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Update documentation on queries in annotations

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Simon Binder 2020-08-05 18:49:11 +02:00
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docs/content/en/docs/Using SQL/custom_queries.md
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@ -1,12 +1,12 @@
--- ---
title: "(Legacy) Custom queries" title: "Custom queries"
weight: 10 weight: 10
description: Let moor generate Dart from your SQL statements description: Let moor generate Dart from your SQL statements
aliases: aliases:
- /queries/custom - /queries/custom
--- ---
{{% alert title="Outdated feature" color="warning" %}} {{% alert title="Moor files!" color="warning" %}}
With moor 2.0, we moved the new `.moor` files out of preview and added some powerful features to them. With moor 2.0, we moved the new `.moor` files out of preview and added some powerful features to them.
They are easier to use than the approaches described here. While these features will continue to They are easier to use than the approaches described here. While these features will continue to
be supported, moor files will get better tooling support in the future and we recommend to be supported, moor files will get better tooling support in the future and we recommend to
@ -14,7 +14,7 @@ migrate. See [their api]({{%relref "moor_files.md"%}}) for details.
{{% /alert %}} {{% /alert %}}
Although moor includes a fluent api that can be used to model most statements, advanced Although moor includes a fluent api that can be used to model most statements, advanced
features like `GROUP BY` statements or window functions are not yet supported. You can features like `WITH` clauses or subqueries aren't supported yet. You can
use these features with custom statements. You don't have to miss out on other benefits use these features with custom statements. You don't have to miss out on other benefits
moor brings, though: Moor helps you parse the result rows and custom queries also moor brings, though: Moor helps you parse the result rows and custom queries also
support auto-updating streams. support auto-updating streams.
@ -79,10 +79,10 @@ class CategoryWithCount {
Stream<List<CategoryWithCount>> categoriesWithCount() { Stream<List<CategoryWithCount>> categoriesWithCount() {
// select all categories and load how many associated entries there are for // select all categories and load how many associated entries there are for
// each category // each category
return customSelectStream( return customSelect(
'SELECT *, (SELECT COUNT(*) FROM todos WHERE category = c.id) AS "amount" FROM categories c;', 'SELECT *, (SELECT COUNT(*) FROM todos WHERE category = c.id) AS "amount" FROM categories c;',
readsFrom: {todos, categories}, // used for the stream: the stream will update when either table changes readsFrom: {todos, categories}, // used for the stream: the stream will update when either table changes
).map((rows) { ).watch().map((rows) {
// we get list of rows here. We just have to turn the raw data from the row into a // we get list of rows here. We just have to turn the raw data from the row into a
// CategoryWithCount. As we defined the Category table earlier, moor knows how to parse // CategoryWithCount. As we defined the Category table earlier, moor knows how to parse
// a category. The only thing left to do manually is extracting the amount // a category. The only thing left to do manually is extracting the amount