Module diesel::dsl [−] [src]

Includes various helper types and bare functions which are named too generically to be included in prelude, but are often used when using Diesel.

Re-exports

pub use pg::expression::dsl::*;

Structs

now	Represents the SQL `CURRENT_TIMESTAMP` constant. This is equivalent to the `NOW()` function on backends that support it.

Functions

avg	Represents a SQL `AVG` function. This function can only take types which are Foldable.
count	Creates a SQL `COUNT` expression
count_star	Creates a SQL `COUNT(*)` expression
date	Represents the SQL `DATE` function. The argument should be a Timestamp expression, and the return value will be an expression of type Date.
exists	Creates a SQL `EXISTS` expression.
max	Represents a SQL `MAX` function. This function can only take types which are ordered.
min	Represents a SQL `MIN` function. This function can only take types which are ordered.
not	Creates a SQL `NOT` expression
sql	Use literal SQL in the query builder
sum	Represents a SQL `SUM` function. This function can only take types which are Foldable.

Type Definitions

And	The return type of `lhs.and(rhs)`
AsExpr	The type of `Item` when converted to an expression with the same type as `TargetExpr`
AsExprOf	The type of `Item` when converted to an expression of `Type`
Asc	The return type of `expr.asc()`
Between	The return type of `lhs.between(lower, upper)`
Desc	The return type of `expr.desc()`
Distinct	Represents the return type of `.distinct()`
DistinctOn	Represents the return type of `.distinct_on(expr)`
Eq	The return type of `lhs.eq(rhs)`
EqAny	The return type of `lhs.eq_any(rhs)`
Escape	The return type of `lhs.escape('x')`
Filter	Represents the return type of `.filter(predicate)`
Find	Represents the return type of `.find(pk)`
FindBy	Represents the return type of `.filter(lhs.eq(rhs))`
ForUpdate	Represents the return type of `.for_update()`
Gt	The return type of `lhs.gt(rhs)`
GtEq	The return type of `lhs.ge(rhs)`
InnerJoin	Represents the return type of `.inner_join(rhs)`
IntoBoxed	Represents the return type of `.into_boxed::<'a, DB>()`
IsNotNull	The return type of `expr.is_not_null()`
IsNull	The return type of `expr.is_null()`
LeftJoin	Represents the return type of `.left_join(rhs)`
Like	The return type of `lhs.like(rhs)`
Limit	Represents the return type of `.limit()`
Lt	The return type of `lhs.lt(rhs)`
LtEq	The return type of `lhs.le(rhs)`
NeAny	The return type of `lhs.ne_any(rhs)`
NotBetween	The return type of `lhs.not_between(lower, upper)`
NotEq	The return type of `lhs.ne(rhs)`
NotLike	The return type of `lhs.not_like(rhs)`
Nullable	The return type of `expr.nullable()`
Offset	Represents the return type of `.offset()`
Or	The return type of `lhs.or(rhs)`
OrFilter	Represents the return type of `.or_filter(predicate)`
Order	Represents the return type of `.order(ordering)`
Select	Represents the return type of `.select(selection)`
SingleValue	Represents the return type of `.single_value()`
SqlTypeOf	The SQL type of an expression
ThenOrderBy	Represents the return type of `.then_order_by(ordering)`
Update	Represents the return type of `update(lhs).set(rhs)`
avg	The return type of `avg(expr)`
date	The return type of `date(expr)`
max	The return type of `max(expr)`
min	The return type of `min(expr)`
not	The return type of `not(expr)`
sum	The return type of `sum(expr)`