Type Definition diesel::sql_types::VarChar

type VarChar = Text;

The SQL VARCHAR type

This type is generally interchangeable with TEXT, so Diesel has this as an alias rather than a separate type (Diesel does not currently support implicit coercions).

One notable exception to this is with arrays on PG. TEXT[] cannot be coerced to VARCHAR[]. It is recommended that you always use TEXT[] if you need a string array on PG.

Trait Implementations

impl FromSql<VarChar, Sqlite> for *const str

The returned pointer is only valid for the lifetime to the argument of from_sql. This impl is intended for uses where you want to write a new impl in terms of String, but don't want to allocate. We have to return a raw pointer instead of a reference with a lifetime due to the structure of FromSql

fn from_sql(value: Option<&SqliteValue>) -> Result<Self>

See the trait documentation.