Crate rusqlite

Expand description

Rusqlite is an ergonomic wrapper for using SQLite from Rust.

Historically, the API was based on the one from rust-postgres. However, the two have diverged in many ways, and no compatibility between the two is intended.

use rusqlite::{params, Connection, Result};

#[derive(Debug)]
struct Person {
    id: i32,
    name: String,
    data: Option<Vec<u8>>,
}

fn main() -> Result<()> {
    let conn = Connection::open_in_memory()?;

    conn.execute(
        "CREATE TABLE person (
            id   INTEGER PRIMARY KEY,
            name TEXT NOT NULL,
            data BLOB
        )",
        (), // empty list of parameters.
    )?;
    let me = Person {
        id: 0,
        name: "Steven".to_string(),
        data: None,
    };
    conn.execute(
        "INSERT INTO person (name, data) VALUES (?1, ?2)",
        (&me.name, &me.data),
    )?;

    let mut stmt = conn.prepare("SELECT id, name, data FROM person")?;
    let person_iter = stmt.query_map([], |row| {
        Ok(Person {
            id: row.get(0)?,
            name: row.get(1)?,
            data: row.get(2)?,
        })
    })?;

    for person in person_iter {
        println!("Found person {:?}", person.unwrap());
    }
    Ok(())
}

Re-exports§

pub use crate::types::ToSql;
pub use libsql_ffi as ffi;

Modules§

backupbackup: Online SQLite backup API.
blobblob: Incremental BLOB I/O.
config: Configure database connections
functionsfunctions: Create or redefine SQL functions.
hookshooks: Commit, Data Change and Rollback Notification Callbacks
limitslimits: Run-Time Limits
tracetrace: Tracing and profiling functions. Error and warning log.
types: Traits dealing with SQLite data types.
vtabvtab: Create virtual tables.

Macros§

named_params: A macro making it more convenient to pass lists of named parameters as a &[(&str, &dyn ToSql)].
params: A macro making it more convenient to longer lists of parameters as a &[&dyn ToSql].

Structs§

AndThenRows: An iterator over the mapped resulting rows of a query, with an Error type unifying with Error.
Batch: Batch iterator
CachedStatement: Cacheable statement.
Column: Information about a column of a SQLite query.
Connection: A connection to a SQLite database.
InterruptHandle: Allows interrupting a long-running computation.
LoadExtensionGuard: RAII guard temporarily enabling SQLite extensions to be loaded.
Map: F is used to transform the streaming iterator into a fallible iterator.
MappedRows: An iterator over the mapped resulting rows of a query.
OpenFlags: Flags for opening SQLite database connections. See sqlite3_open_v2 for details.
ParamsFromIter: Adapter type which allows any iterator over ToSql values to implement Params.
Row: A single result row of a query.
Rows: An handle for the resulting rows of a query.
Savepoint: Represents a savepoint on a database connection.
Statement: A prepared statement.
Transaction: Represents a transaction on a database connection.

Enums§

DatabaseName: Name for a database within a SQLite connection.
DropBehavior: Options for how a Transaction or Savepoint should behave when it is dropped.
Error: Enum listing possible errors from rusqlite.
ErrorCode: Error Codes
StatementStatus: Prepared statement status counters.
TransactionBehavior: Options for transaction behavior. See BEGIN TRANSACTION for details.
TransactionState: Transaction state of a database

Constants§

MAIN_DB: Shorthand for DatabaseName::Main.
TEMP_DB: Shorthand for DatabaseName::Temp.

Traits§

OptionalExtension: See the method documentation.
Params: Trait used for sets of parameter passed into SQL statements/queries.
RowIndex: A trait implemented by types that can index into columns of a row.

Functions§

bypass_sqlite_initialization^⚠: rusqlite’s check for a safe SQLite threading mode requires SQLite 3.7.0 or later. If you are running against a SQLite older than that, rusqlite attempts to ensure safety by performing configuration and initialization of SQLite itself the first time you attempt to open a connection. By default, rusqlite panics if that initialization fails, since that could mean SQLite has been initialized in single-thread mode.
params_from_iter: Constructor function for a ParamsFromIter. See its documentation for more.
version: Returns the SQLite version as a string; e.g., "3.16.2" for version 3.16.2.
version_number: Returns the SQLite version as an integer; e.g., 3016002 for version 3.16.2.

Type Aliases§

Result: A typedef of the result returned by many methods.

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