Struct Cond 

pub struct Cond { /* private fields */ }

Cond 提供构造条件表达式的辅助方法。

Implementations

impl Cond

pub fn new() -> Self

创建一个独立 Cond（对齐 go 版：index_base 设大一点，避免误用导致递归爆栈）。

pub fn var(&self, value: impl Into<Arg>) -> String

Var：把值放进 Args，返回 $n 占位符。

pub fn equal(&self, field: &str, value: impl Into<Arg>) -> String

pub fn e(&self, field: &str, value: impl Into<Arg>) -> String

pub fn eq(&self, field: &str, value: impl Into<Arg>) -> String

pub fn not_equal(&self, field: &str, value: impl Into<Arg>) -> String

pub fn ne(&self, field: &str, value: impl Into<Arg>) -> String

pub fn neq(&self, field: &str, value: impl Into<Arg>) -> String

pub fn greater_than(&self, field: &str, value: impl Into<Arg>) -> String

pub fn g(&self, field: &str, value: impl Into<Arg>) -> String

pub fn gt(&self, field: &str, value: impl Into<Arg>) -> String

pub fn greater_equal_than(&self, field: &str, value: impl Into<Arg>) -> String

pub fn ge(&self, field: &str, value: impl Into<Arg>) -> String

pub fn gte(&self, field: &str, value: impl Into<Arg>) -> String

pub fn less_than(&self, field: &str, value: impl Into<Arg>) -> String

pub fn l(&self, field: &str, value: impl Into<Arg>) -> String

pub fn lt(&self, field: &str, value: impl Into<Arg>) -> String

pub fn less_equal_than(&self, field: &str, value: impl Into<Arg>) -> String

pub fn le(&self, field: &str, value: impl Into<Arg>) -> String

pub fn lte(&self, field: &str, value: impl Into<Arg>) -> String

pub fn like(&self, field: &str, value: impl Into<Arg>) -> String

pub fn ilike(&self, field: &str, value: impl Into<Arg>) -> String

pub fn not_like(&self, field: &str, value: impl Into<Arg>) -> String

pub fn not_ilike(&self, field: &str, value: impl Into<Arg>) -> String

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

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

pub fn between( &self, field: &str, lower: impl Into<Arg>, upper: impl Into<Arg>, ) -> String

pub fn not_between( &self, field: &str, lower: impl Into<Arg>, upper: impl Into<Arg>, ) -> String

pub fn in_( &self, field: &str, values: impl IntoIterator<Item = impl Into<Arg>>, ) -> String

pub fn not_in( &self, field: &str, values: impl IntoIterator<Item = impl Into<Arg>>, ) -> String

pub fn or<T>(&self, exprs: T) -> String

where T: IntoStrings,

pub fn and<T>(&self, exprs: T) -> String

where T: IntoStrings,

pub fn not(&self, expr: impl Into<String>) -> String

pub fn exists(&self, subquery: impl Into<Arg>) -> String

pub fn not_exists(&self, subquery: impl Into<Arg>) -> String

pub fn any( &self, field: &str, op: &str, values: impl IntoIterator<Item = impl Into<Arg>>, ) -> String

pub fn all( &self, field: &str, op: &str, values: impl IntoIterator<Item = impl Into<Arg>>, ) -> String

pub fn some( &self, field: &str, op: &str, values: impl IntoIterator<Item = impl Into<Arg>>, ) -> String

pub fn is_distinct_from(&self, field: &str, value: impl Into<Arg>) -> String

pub fn is_not_distinct_from(&self, field: &str, value: impl Into<Arg>) -> String

Trait Implementations

impl Clone for Cond

fn clone(&self) -> Cond

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Cond

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

Formats the value using the given formatter.

impl Default for Cond

fn default() -> Self

Returns the “default value” for a type.