Expand description
Interface to SQLite.
Example
Open a connection, create a table, and insert a few rows:
let connection = sqlite::open(":memory:").unwrap();
connection
.execute(
"
CREATE TABLE users (name TEXT, age INTEGER);
INSERT INTO users VALUES ('Alice', 42);
INSERT INTO users VALUES ('Bob', 69);
",
)
.unwrap();
Select some rows and process them one by one as plain text:
connection
.iterate("SELECT * FROM users WHERE age > 50", |pairs| {
for &(column, value) in pairs.iter() {
println!("{} = {}", column, value.unwrap());
}
true
})
.unwrap();
Run the same query but using a prepared statement, which is much more efficient than the previous technique:
use sqlite::State;
let mut statement = connection.prepare("SELECT * FROM users WHERE age > ?").unwrap();
statement.bind(1, 50).unwrap();
while let Ok(State::Row) = statement.next() {
println!("name = {}", statement.read::<String>(0).unwrap());
println!("age = {}", statement.read::<i64>(1).unwrap());
}
Run the same query but using a cursor, which is a wrapper around a prepared statement providing the notion of row and featuring all-at-once binding:
use sqlite::Value;
let cursor = connection
.prepare("SELECT * FROM users WHERE age > ?")
.unwrap()
.into_cursor()
.bind(&[50.into()])
.unwrap();
for row in cursor.map(|row| row.unwrap()) {
println!("name = {}", row.get::<String, _>("name"));
println!("age = {}", row.get::<i64, _>("age"));
}
Structs
A database connection.
A thread-safe database connection.
An iterator over rows.
An error.
Flags for opening a database connection.
A row.
A prepared statement.
Enums
Traits
A type suitable for binding to a prepared statement.
A type suitable for indexing columns.
A type suitable for reading from a prepared statement.
A type that values can be converted into.
Functions
Open a read-write connection to a new or existing database.
Return the version number of SQLite.
Type Definitions
A result.