Struct OwnedPreparedStatement 

pub struct OwnedPreparedStatement {
    pub inner: OwnedPreparedStatement<OwnedPostgresValue>,
}

Owned PostgreSQL prepared statement wrapper.

This is the owned counterpart to PreparedStatement that doesn’t have any lifetime constraints. All data is owned by this struct, making it suitable for long-term storage, caching, or passing across thread boundaries.

Use Cases

• Caching: Store prepared statements in a cache for reuse
• Multi-threading: Pass prepared statements between threads (with tokio-postgres)
• Long-term storage: Keep prepared statements in application state
• Query reuse: Execute the same query with different parameters efficiently

Examples

use drizzle_postgres::builder::{QueryBuilder, PreparedStatement, OwnedPreparedStatement};
use drizzle_macros::{PostgresTable, PostgresSchema};
use drizzle_core::{ToSQL, SQL};

#[PostgresTable(name = "users")]
struct User {
    #[column(serial, primary)]
    id: i32,
    name: String,
}

#[derive(PostgresSchema)]
struct Schema {
    user: User,
}

let builder = QueryBuilder::new::<Schema>();
let Schema { user } = Schema::new();

// Create a prepared statement and convert to owned
let prepared = builder
    .select(user.name)
    .from(user)
    .prepare();

let owned: OwnedPreparedStatement = prepared.into_owned();

// Owned can be stored in a HashMap for reuse
// let mut cache: HashMap<String, OwnedPreparedStatement> = HashMap::new();
// cache.insert("select_user_name".to_string(), owned);

Conversion

You can convert between borrowed and owned forms:

• PreparedStatement::into_owned() → OwnedPreparedStatement
• OwnedPreparedStatement → PreparedStatement (via From trait)

Fields

inner: OwnedPreparedStatement<OwnedPostgresValue>

Trait Implementations

impl Clone for OwnedPreparedStatement

fn clone(&self) -> OwnedPreparedStatement

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for OwnedPreparedStatement

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for OwnedPreparedStatement

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl From<OwnedPreparedStatement> for PreparedStatement<'_>

fn from(value: OwnedPreparedStatement) -> Self

Converts to this type from the input type.

impl<'a> From<PreparedStatement<'a>> for OwnedPreparedStatement

fn from(value: PreparedStatement<'a>) -> Self

Converts to this type from the input type.