SQLite

The package provides an interface to SQLite.

Example

Open a connection, create a table, and insert some rows:

```rust 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:

rust connection .iterate("SELECT * FROM users WHERE age > 50", |pairs| { for &(column, value) in pairs.iter() { println!("{} = {}", column, value.unwrap()); } true }) .unwrap();

The same query using a prepared statement, which is much more efficient than the previous technique:

```rust use sqlite::State;

let mut statement = connection .prepare("SELECT * FROM users WHERE age > ?") .unwrap();

statement.bind(1, 50).unwrap();

while let State::Row = statement.next().unwrap() { println!("name = {}", statement.read::(0).unwrap()); println!("age = {}", statement.read::(1).unwrap()); } ```

The same query using a cursor, which is a wrapper around a prepared statement providing the concept of row and featuring all-at-once binding:

```rust use sqlite::Value;

let mut cursor = connection .prepare("SELECT * FROM users WHERE age > ?") .unwrap() .cursor();

cursor.bind(&[Value::Integer(50)]).unwrap();

while let Some(row) = cursor.next().unwrap() { println!("name = {}", row[0].asstring().unwrap()); println!("age = {}", row[1].asinteger().unwrap()); } ```

Contribution

Your contribution is highly appreciated. Do not hesitate to open an issue or a pull request. Note that any contribution submitted for inclusion in the project will be licensed according to the terms given in LICENSE.md.