Function array_contains 

pub fn array_contains<'a, L, R>(
    left: L,
    right: R,
) -> SQLExpr<'a, PostgresValue<'a>, Boolean, NonNull, Scalar>
where
    L: Expr<'a, PostgresValue<'a>>,
    R: ToSQL<'a, PostgresValue<'a>>,

PostgreSQL @> operator - array contains.

Returns true if the left array contains all elements of the right array.

Example

let tags = SQL::<PostgresValue>::raw("tags");
let condition = array_contains(tags, "rust");
assert!(condition.to_sql().sql().contains("@>"));
// Generates: tags @> $1