Enum HavingClause 

#[non_exhaustive]
pub enum HavingClause {
    Aggregate {
        aggregate: String,
        operator: WhereOperator,
        value: Value,
    },
    And(Vec<HavingClause>),
    Or(Vec<HavingClause>),
    Not(Box<HavingClause>),
}

HAVING clause abstract syntax tree.

HAVING filters aggregated results after GROUP BY, while WHERE filters rows before aggregation.

Example

use fraiseql_db::{HavingClause, WhereOperator};
use serde_json::json;

// Simple condition: COUNT(*) > 10
let having_clause = HavingClause::Aggregate {
    aggregate: "count".to_string(),
    operator: WhereOperator::Gt,
    value: json!(10),
};

// Complex condition: (COUNT(*) > 10) AND (SUM(revenue) >= 1000)
let having_clause = HavingClause::And(vec![
    HavingClause::Aggregate {
        aggregate: "count".to_string(),
        operator: WhereOperator::Gt,
        value: json!(10),
    },
    HavingClause::Aggregate {
        aggregate: "revenue_sum".to_string(),
        operator: WhereOperator::Gte,
        value: json!(1000),
    },
]);

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Aggregate

Aggregate field condition (e.g., count_gt, revenue_sum_gte).

Fields

aggregate: String

Aggregate name: “count” or “field_function” (e.g., “revenue_sum”).

operator: WhereOperator

Comparison operator.

value: Value

Value to compare against.

And(Vec<HavingClause>)

Logical AND of multiple conditions.

Or(Vec<HavingClause>)

Logical OR of multiple conditions.

Not(Box<HavingClause>)

Logical NOT of a condition.

Implementations

impl HavingClause

pub const fn is_empty(&self) -> bool

Check if HAVING clause is empty.

Trait Implementations

impl Clone for HavingClause

fn clone(&self) -> HavingClause

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for HavingClause

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for HavingClause

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for HavingClause

fn eq(&self, other: &HavingClause) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for HavingClause

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for HavingClause