Enum WhereClause 

pub enum WhereClause {
    Eq(String, Value),
    Ne(String, Value),
    Gt(String, Value),
    Ge(String, Value),
    Lt(String, Value),
    Le(String, Value),
    Like(String, Value),
    IsNull(String),
    IsNotNull(String),
    In(String, Vec<Value>),
    NotIn(String, Vec<Value>),
    Between(String, Value, Value),
    Raw(String),
}

WHERE 条件子句（内部表示）

Variants

Eq(String, Value)

col = value

Ne(String, Value)

col != value

Gt(String, Value)

col > value

Ge(String, Value)

col >= value

Lt(String, Value)

col < value

Le(String, Value)

col <= value

Like(String, Value)

col LIKE value

IsNull(String)

col IS NULL

IsNotNull(String)

col IS NOT NULL

In(String, Vec<Value>)

col IN (v1, v2, ...)

NotIn(String, Vec<Value>)

col NOT IN (v1, v2, ...)

Between(String, Value, Value)

col BETWEEN v1 AND v2

Raw(String)

原始 SQL（用于 OR 等复杂条件）

Trait Implementations

impl Clone for WhereClause

fn clone(&self) -> WhereClause

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for WhereClause

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

Formats the value using the given formatter.