Struct PostgresSessionSpec 

pub struct PostgresSessionSpec {
    pub plan_cache_mode: Option<PlanCacheMode>,
    pub jit: Option<bool>,
    pub application_name: Option<String>,
}

PostgreSQL 连接级 session 初始化配置（稳定执行计划用）。

对应 [provider.sqldb.postgres_session]；仅 kind = "postgres" 生效， 其他 kind 配置该字段会在 SqlProviderSpec::validate_specs 被拒绝。 未配置（None）时保持默认行为；每一项 None 表示该项不下发。 不提供任意 after_connect_sql 入口。

Fields

plan_cache_mode: Option<PlanCacheMode>

jit: Option<bool>

None = 不下发 SET jit（保持数据库默认）。

application_name: Option<String>

None = 不下发 SET application_name。长度 ≤ 63 字节（PG NAMEDATALEN-1），无控制字符。

Trait Implementations

impl Clone for PostgresSessionSpec

fn clone(&self) -> PostgresSessionSpec

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PostgresSessionSpec

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

Formats the value using the given formatter.

impl Default for PostgresSessionSpec

fn default() -> PostgresSessionSpec

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for PostgresSessionSpec

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for PostgresSessionSpec

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for PostgresSessionSpec