Struct DeleteQuery 

pub struct DeleteQuery { /* private fields */ }

DELETE 查询构造器

Implementations

impl DeleteQuery

pub fn new() -> Self

创建空的 DELETE 查询

pub fn from_table(self, table: &str) -> Self

设置目标表

pub fn where_clause(self, condition: &str) -> Self

添加 WHERE 条件

安全性（v0.2.2 修复 C-6）

调用 check_where_injection 检测高危模式。

pub fn where_eq(self, column: &str, value: Value) -> Self

添加 column = ? AND 条件（P0 修复：参数化绑定）

pub fn where_ne(self, column: &str, value: Value) -> Self

添加 column <> ? AND 条件

pub fn where_gt(self, column: &str, value: Value) -> Self

添加 column > ? AND 条件

pub fn where_ge(self, column: &str, value: Value) -> Self

添加 column >= ? AND 条件

pub fn where_lt(self, column: &str, value: Value) -> Self

添加 column < ? AND 条件

pub fn where_le(self, column: &str, value: Value) -> Self

添加 column <= ? AND 条件

pub fn where_like(self, column: &str, pattern: Value) -> Self

添加 column LIKE ? AND 条件

pub fn where_in(self, column: &str, values: Vec<Value>) -> Self

添加 column IN (?, ?, ...) AND 条件

pub fn where_between(self, column: &str, low: Value, high: Value) -> Self

添加 column BETWEEN ? AND ? AND 条件

pub fn where_null(self, column: &str) -> Self

添加 column IS NULL AND 条件

pub fn where_not_null(self, column: &str) -> Self

添加 column IS NOT NULL AND 条件

pub fn returning(self, columns: &[&str]) -> Self

设置 RETURNING 子句（PostgreSQL/SQLite 3.35+ 支持）

在 DELETE 后返回被删除行的指定列值。MySQL 不支持 RETURNING， 在 build()（MySQL 风格）和 build_with_dialect() 的 MySQL 方言下被忽略。

pub fn returning_all(self) -> Self

设置 RETURNING *（返回所有列）

pub fn build(self) -> String

生成 SQL

安全性（门禁 9 修复）

表名经 quote_ident() 转义后包裹反引号，防止含 ` 的恶意表名逃逸。

pub fn build_with_dialect(self, db_type: DbType) -> String

按指定方言生成 SQL

pub fn build_with_params(self, db_type: DbType) -> BuiltQuery

生成带参数的 SQL（参数化查询，P0 修复：SQL 注入防护）

WHERE 条件可来自 where_eq/where_in/where_between 等参数化 API， 用户输入作为参数绑定，而非字符串拼接。

Trait Implementations

impl Clone for DeleteQuery

fn clone(&self) -> DeleteQuery

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DeleteQuery

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

Formats the value using the given formatter.

impl Default for DeleteQuery

fn default() -> DeleteQuery

Returns the “default value” for a type.