pub trait QueryFragment<DB: Backend, SP = NotSpecialized> {
// Required method
fn walk_ast<'b>(&'b self, pass: AstPass<'_, 'b, DB>) -> QueryResult<()>;
}Expand description
An untyped fragment of SQL.
This may be a complete SQL command (such as an update statement without a
RETURNING clause), or a subsection (such as our internal types used to
represent a WHERE clause). Implementations of ExecuteDsl and
LoadQuery will generally require that this trait be implemented.
Required Methods§
Trait Implementations§
Source§impl<DB> QueryId for dyn QueryFragment<DB>
impl<DB> QueryId for dyn QueryFragment<DB>
Source§const HAS_STATIC_QUERY_ID: bool = false
const HAS_STATIC_QUERY_ID: bool = false
Can the SQL generated by
Self be uniquely identified by its type? Read more