predicate

Types

ComparisonOp

Enumerates comparison operators used by binary predicates.

pub type ComparisonOp {
  Eq
  Neq
  Gt
  Gte
  Lt
  Lte
}

Constructors

```
Eq
```
```
Neq
```
```
Gt
```
```
Gte
```
```
Lt
```
```
Lte
```

Predicate

</>

Represents boolean conditions used in WHERE and JOIN clauses.

pub type Predicate {
  Comparison(
    lhs: expression.Expression,
    op: ComparisonOp,
    rhs: expression.Expression,
  )
  And(left: Predicate, right: Predicate)
  Or(left: Predicate, right: Predicate)
  Not(predicate: Predicate)
  InList(
    lhs: expression.Expression,
    rhs: List(expression.Expression),
  )
  IsNull(expression: expression.Expression)
  IsNotNull(expression: expression.Expression)
  Like(lhs: expression.Expression, rhs: expression.Expression)
  Ilike(lhs: expression.Expression, rhs: expression.Expression)
}

Constructors

Comparison(
  lhs: expression.Expression,
  op: ComparisonOp,
  rhs: expression.Expression,
)

```
And(left: Predicate, right: Predicate)
```
```
Or(left: Predicate, right: Predicate)
```
```
Not(predicate: Predicate)
```

InList(
  lhs: expression.Expression,
  rhs: List(expression.Expression),
)

IsNull(expression: expression.Expression)

IsNotNull(expression: expression.Expression)

Like(lhs: expression.Expression, rhs: expression.Expression)

Ilike(lhs: expression.Expression, rhs: expression.Expression)