Comments (5)
Sure, thats just the current execution context for that query, like $parent
inside a sub-query.
https://surrealdb.com/docs/surrealdb/surrealql/parameters#parent-this
Don't forget to close the issue ^^
from surrealdb.
Heya! If I understand your example correctly, you want to ensure that the column with the name of the column being contained in the $column
variables, which is a string, contains a value that you pass from the client in the $value
parameter? You would do this like so:
LET $column = "name";
LET $value = "biryani";
SELECT * FROM menu_item WHERE string::startsWith($this[column], $value) LIMIT 10 FETCH categories
from surrealdb.
$column and $value are dynamic, so i don't really know whats coming in them.
Since i am using JavaScript I would do the above like this.
LET $column = "${column}";
LET $value = "${value}";
this is same as i am sending values directly in query.
My question is why can't i use parameters inside the query. The query works when i don't use string functions. But with string functions it gives error.
I have a similar issue for RELATE
query, where i am sending extra data with parameters and they are also not working. While sending them directly in query working
from surrealdb.
import { Surreal } from 'surrealdb.node';
const db = new Surreal();
async function main() {
await db.connect('ws://127.0.0.1:8000');
await db.signin({
username: 'root',
password: 'root',
});
await db.use({ ns: 'test', db: 'test' });
await db.create('menu_item', { name: 'Pizza' });
let res = await db.query(
'SELECT * FROM menu_item WHERE string::startsWith($this[$column], $value)',
{ column: 'name', value: 'P' }
);
console.log(res);
}
main();
i've tried around a bit, this seems to work, you where just missing the $this
like @kearfy mentioned
from surrealdb.
This resolved the issue but can you tell me why $this
is used with $column
variable and why not with $value
?
@fokklz
from surrealdb.
Related Issues (20)
- Bug: (Rust SDK) `.bind()` function on query doesn't seem to work correctly when passing valid record id as a `&str`. HOT 1
- Feature: `surrealdb::api::method::Surreal::create` should return `Option<T>` when creating a record with a random ID.
- Bug: Large `number`s cast into odd floats instead of decimals
- Bug: Incorrect parsing of the Content-Type request header
- Bug: `type::thing()` method allows creation of empty ident parts
- Bug: multiple `take()`'s for different fields on one response can fail
- Bug: Aggregate on Aggregate table results to "Cannot perform addition with '0' and 'NONE'" HOT 1
- Bug: Aggregate on Aggregate Table results to "Cannot perform division with '0' and '0'"
- Bug: math::median says it expects an array, whereas math::mean, sum, etc. work HOT 2
- Feature: Bidirectional link records
- Bug: --tick-interval seems to be ignored
- Bug: Internal database error: ts is less than or equal to the latest ts HOT 2
- Bug: [Rust SDK] Updating a row containing the ID in the table panics HOT 1
- Bug: Import export should run relationships after the records are imported HOT 2
- Bug: DEFINE FIELD against incorrect parent field should fail
- Bug: kv-mem fails sometimes
- Bug: Parse error on DEFINE TOKEN with JWKS HOT 5
- Feature: Polymorphic Fields ( Owned by multiple tables)
- Feature: throw error on external variable mutation on FOR loop
- Feature: console.log
Recommend Projects
-
React
A declarative, efficient, and flexible JavaScript library for building user interfaces.
-
Vue.js
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
-
Typescript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
-
TensorFlow
An Open Source Machine Learning Framework for Everyone
-
Django
The Web framework for perfectionists with deadlines.
-
Laravel
A PHP framework for web artisans
-
D3
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
-
Recommend Topics
-
javascript
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
-
web
Some thing interesting about web. New door for the world.
-
server
A server is a program made to process requests and deliver data to clients.
-
Machine learning
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
-
Visualization
Some thing interesting about visualization, use data art
-
Game
Some thing interesting about game, make everyone happy.
Recommend Org
-
Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
-
Microsoft
Open source projects and samples from Microsoft.
-
Google
Google ❤️ Open Source for everyone.
-
Alibaba
Alibaba Open Source for everyone
-
D3
Data-Driven Documents codes.
-
Tencent
China tencent open source team.
from surrealdb.