set()
Assigns a value as a parameter for this connection.
Method Syntax
db.set(key, value)
This is equivalent to using a LET statement in SurrealQL, such as this one.
LET $name = {
first: "Tobie",
last: "Morgan Hitchcock",
};
Arguments
| Argument | Description |
|---|---|
key
| Specifies the name of the variable. |
val
| Assigns the value to the variable name. |
Example usage
use surrealdb::Surreal;
use surrealdb::engine::remote::ws::Ws;
use surrealdb::opt::auth::Root;
use surrealdb_types::SurrealValue;
#[derive(Debug, SurrealValue)]
struct Name {
first: String,
last: String,
}
#[tokio::main]
async fn main() -> surrealdb::Result<()> {
let db = Surreal::new::<Ws>("127.0.0.1:8000").await?;
db.signin(Root {
username: "root".to_string(),
password: "secret".to_string(),
})
.await?;
db.use_ns("main").use_db("main").await?;
// Assign the variable on the connection
db.set(
"name",
Name {
first: "Tobie".to_string(),
last: "Morgan Hitchcock".to_string(),
},
)
.await?;
// Use the variable in a subsequent query
let create = db.query("CREATE person SET name = $name").await?;
dbg!(create);
// Use the variable in a subsequent query
let select = db
.query("SELECT * FROM person WHERE name.first = $name.first")
.await?;
dbg!(select);
Ok(())
}
See also
Assigns a value as a parameter for this connection.
Method Syntax
db.set(key, value)
This is equivalent to using a LET statement in SurrealQL, such as this one.
LET $name = {
first: "Tobie",
last: "Morgan Hitchcock",
};
Arguments
| Argument | Description |
|---|---|
key
| Specifies the name of the variable. |
val
| Assigns the value to the variable name. |
Example usage
use serde::Serialize;
use surrealdb::engine::remote::ws::Ws;
use surrealdb::opt::auth::Root;
use surrealdb::Surreal;
#[derive(Debug, Serialize)]
struct Name<'a> {
first: &'a str,
last: &'a str,
}
#[tokio::main]
async fn main() -> surrealdb::Result<()> {
let db = Surreal::new::<Ws>("127.0.0.1:8000").await?;
db.signin(Root {
username: "root",
password: "secret",
})
.await?;
db.use_ns("ns").use_db("db").await?;
// Assign the variable on the connection
db.set(
"name",
Name {
first: "Tobie",
last: "Morgan Hitchcock",
},
)
.await?;
// Use the variable in a subsequent query
let create = db.query("CREATE person SET name = $name").await?;
dbg!(create);
// Use the variable in a subsequent query
let select = db
.query("SELECT * FROM person WHERE name.first = $name.first")
.await?;
dbg!(select);
Ok(())
}