Struct NotBuilder 

pub struct NotBuilder { /* private fields */ }

NOT 构建器 - 用于对单个过滤条件取反

通过 QueryBuilder::not() 创建，提供所有过滤条件方法 调用任意过滤方法会将生成的表达式用 Not 包裹后添加到查询中

Implementations

impl NotBuilder

pub fn expr(self, expr: FilterExpr) -> QueryBuilder

添加任意过滤表达式（复杂场景）

示例

// 查询 NOT (age > 18 AND status = 'active')
db.query("users")
    .not()
    .expr(FilterExpr::And(
        Box::new(FilterExpr::Gt { field: "age".to_string(), value: DbValue::integer(18) }),
        Box::new(FilterExpr::Eq { field: "status".to_string(), value: DbValue::text("active") })
    ))
    .execute()?;

pub fn eq(self, field: &str, value: DbValue) -> QueryBuilder

EQ 取反：不等于 (!=)

pub fn ne(self, field: &str, value: DbValue) -> QueryBuilder

NE 取反：等于 (=)

pub fn lt(self, field: &str, value: DbValue) -> QueryBuilder

LT 取反：大于等于 (>=)

pub fn le(self, field: &str, value: DbValue) -> QueryBuilder

LE 取反：大于 (>)

pub fn gt(self, field: &str, value: DbValue) -> QueryBuilder

GT 取反：小于等于 (<=)

pub fn ge(self, field: &str, value: DbValue) -> QueryBuilder

GE 取反：小于 (<)

pub fn in_list(self, field: &str, values: Vec<DbValue>) -> QueryBuilder

IN 取反：NOT IN

pub fn contains(self, field: &str, value: &str) -> QueryBuilder

CONTAINS 取反：NOT LIKE

pub fn is_null(self, field: &str) -> QueryBuilder

IS NULL 取反：IS NOT NULL

pub fn is_not_null(self, field: &str) -> QueryBuilder

IS NOT NULL 取反：IS NULL