Struct Setting 

pub struct Setting { /* private fields */ }

A single ClickHouse query setting, consisting of a key, value, and flags.

A setting represents a key-value pair sent to the ClickHouse server to configure query execution. The key is a string (e.g., max_threads), and the value is a SettingValue (integer, boolean, float, or string). The important and custom flags control serialization behavior in the native protocol.

Fields

• key: The setting name (e.g., max_threads).
• value: The setting value, stored as a SettingValue.
• important: If true, marks the setting as important (affects serialization).
• custom: If true, serializes the value as a custom string (e.g., for complex types).

ClickHouse Reference

See the ClickHouse Settings Reference for valid setting names and their types.

Trait Implementations

impl Clone for Setting

fn clone(&self) -> Setting

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Setting

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Setting

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<T: Into<String>, U: Into<SettingValue>> From<(T, U)> for Setting

fn from(value: (T, U)) -> Self

Converts to this type from the input type.

impl PartialEq for Setting

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for Setting

fn partial_cmp(&self, other: &Setting) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for Setting

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Setting