datafusion-sql 46.0.1

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// to you under the Apache License, Version 2.0 (the
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//
//   http://www.apache.org/licenses/LICENSE-2.0
//
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use crate::planner::{ContextProvider, PlannerContext, SqlToRel};
use datafusion_common::{DFSchema, Result};
use datafusion_expr::expr::Exists;
use datafusion_expr::expr::InSubquery;
use datafusion_expr::{Expr, Subquery};
use sqlparser::ast::Expr as SQLExpr;
use sqlparser::ast::Query;
use std::sync::Arc;

impl<S: ContextProvider> SqlToRel<'_, S> {
    pub(super) fn parse_exists_subquery(
        &self,
        subquery: Query,
        negated: bool,
        input_schema: &DFSchema,
        planner_context: &mut PlannerContext,
    ) -> Result<Expr> {
        let old_outer_query_schema =
            planner_context.set_outer_query_schema(Some(input_schema.clone().into()));
        let sub_plan = self.query_to_plan(subquery, planner_context)?;
        let outer_ref_columns = sub_plan.all_out_ref_exprs();
        planner_context.set_outer_query_schema(old_outer_query_schema);
        Ok(Expr::Exists(Exists {
            subquery: Subquery {
                subquery: Arc::new(sub_plan),
                outer_ref_columns,
            },
            negated,
        }))
    }

    pub(super) fn parse_in_subquery(
        &self,
        expr: SQLExpr,
        subquery: Query,
        negated: bool,
        input_schema: &DFSchema,
        planner_context: &mut PlannerContext,
    ) -> Result<Expr> {
        let old_outer_query_schema =
            planner_context.set_outer_query_schema(Some(input_schema.clone().into()));
        let sub_plan = self.query_to_plan(subquery, planner_context)?;
        let outer_ref_columns = sub_plan.all_out_ref_exprs();
        planner_context.set_outer_query_schema(old_outer_query_schema);
        let expr = Box::new(self.sql_to_expr(expr, input_schema, planner_context)?);
        Ok(Expr::InSubquery(InSubquery::new(
            expr,
            Subquery {
                subquery: Arc::new(sub_plan),
                outer_ref_columns,
            },
            negated,
        )))
    }

    pub(super) fn parse_scalar_subquery(
        &self,
        subquery: Query,
        input_schema: &DFSchema,
        planner_context: &mut PlannerContext,
    ) -> Result<Expr> {
        let old_outer_query_schema =
            planner_context.set_outer_query_schema(Some(input_schema.clone().into()));
        let sub_plan = self.query_to_plan(subquery, planner_context)?;
        let outer_ref_columns = sub_plan.all_out_ref_exprs();
        planner_context.set_outer_query_schema(old_outer_query_schema);
        Ok(Expr::ScalarSubquery(Subquery {
            subquery: Arc::new(sub_plan),
            outer_ref_columns,
        }))
    }
}