Struct JoinExpr 

pub struct JoinExpr {
    pub schema: String,
    pub table: String,
    pub alias: String,
    pub conditions: Vec<(String, String)>,
    pub selects: Vec<SelectExpr>,
    pub group_by: Vec<String>,
    pub use_final: bool,
    pub is_aggregate: bool,
    pub target_cube: String,
    pub join_field: String,
    pub join_type: JoinType,
}

A resolved JOIN to another table, appended to the outer query.

Fields

schema: String

table: String

alias: String

SQL alias for this join, e.g. “_j0”, “_j1”

conditions: Vec<(String, String)>

(main_table_col, joined_table_col) ON conditions

selects: Vec<SelectExpr>

Fields requested from the joined table

group_by: Vec<String>

Non-aggregate columns for GROUP BY (mode B only)

use_final: bool

Append FINAL for ReplacingMergeTree targets (mode A)

is_aggregate: bool

true = target is AggregatingMergeTree, use subquery JOIN (mode B)

target_cube: String

Target cube name for result mapping

join_field: String

GraphQL field name for result nesting, e.g. “joinBuyToken”

join_type: JoinType

JOIN type — defaults to Left for backward compatibility.

Trait Implementations

impl Clone for JoinExpr

fn clone(&self) -> JoinExpr

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for JoinExpr

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

Formats the value using the given formatter.