Trait diesel::query_builder::QueryBuilder [−][src]
pub trait QueryBuilder<DB: Backend> { fn push_sql(&mut self, sql: &str); fn push_identifier(&mut self, identifier: &str) -> QueryResult<()>; fn push_bind_param(&mut self); fn finish(self) -> String; }
Constructs a SQL query from a Diesel AST.
The only reason you should ever need to interact with this trait is if you
are extending Diesel with support for a new backend. Plugins which extend
the query builder with new capabilities will interact with AstPass
instead.
Required Methods
fn push_sql(&mut self, sql: &str)
Add sql
to the end of the query being constructed.
fn push_identifier(&mut self, identifier: &str) -> QueryResult<()>
Quote identifier
, and add it to the end of the query being
constructed.
fn push_bind_param(&mut self)
Add a placeholder for a bind parameter to the end of the query being constructed.
fn finish(self) -> String
Returns the constructed SQL query.
Implementors
impl QueryBuilder<Mysql> for MysqlQueryBuilder
impl QueryBuilder<Pg> for PgQueryBuilder
impl QueryBuilder<Sqlite> for SqliteQueryBuilder