Struct postgres::types::Slice
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pub struct Slice<'a, T: 'a + ToSql>(pub &'a [T]);
An adapter type mapping slices to Postgres arrays.
Slice
's ToSql
implementation maps the slice to a one-dimensional
Postgres array of the relevant type. This is particularly useful with the
ANY
function to match a column against multiple values without having
to dynamically construct the query string.
Examples
let values = &[1i32, 2, 3, 4, 5, 6]; let stmt = try!(conn.prepare("SELECT * FROM foo WHERE id = ANY($1)")); for row in &try!(stmt.query(&[&Slice(values)])) { // ... }
Trait Implementations
impl<'a, T: Debug + 'a + ToSql> Debug for Slice<'a, T>
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impl<'a, T: 'a + ToSql> ToSql for Slice<'a, T>
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fn to_sql_checked(&self, ty: &Type, out: &mut Write) -> Result<IsNull>
An adaptor method used internally by Rust-Postgres. Read more
fn to_sql<W: Write + ?Sized>(&self, ty: &Type, w: &mut W) -> Result<IsNull>
Converts the value of self
into the binary format of the specified Postgres Type
, writing it to out
. Read more
fn accepts(ty: &Type) -> bool
Determines if a value of this type can be converted to the specified Postgres Type
. Read more