Enum AggExpr 

pub enum AggExpr {
    CountStar,
    Sum(String),
    Avg(String),
    Min(String),
    Max(String),
}

聚合表达式（HAVING 条件专用，审计 M-5）

函数名限制在 COUNT/SUM/AVG/MIN/MAX 白名单；Sum/Avg/Min/Max 内列名须通过 sql_safety::validate_identifier 校验并 quote。

Variants

CountStar

COUNT(*)

Sum(String)

SUM(column)

Avg(String)

AVG(column)

Min(String)

MIN(column)

Max(String)

MAX(column)

Implementations

impl AggExpr

pub fn validate(&self) -> Result<(), DbError>

校验聚合表达式（列名标识符校验），失败返回 DbError::InvalidInput

Trait Implementations

impl Clone for AggExpr

fn clone(&self) -> AggExpr

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AggExpr

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

Formats the value using the given formatter.

impl Eq for AggExpr

impl PartialEq for AggExpr

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for AggExpr