Struct IntoClauseRemover 

pub struct IntoClauseRemover;

INTO Clause Remover - Removes INTO clause from AST for execution

This module implements AST rewriting to remove the INTO clause from SELECT statements. The INTO clause is used to store query results in temporary tables, but the query executor doesn’t understand this syntax.

The removal is done at the AST level (not via regex) to ensure correctness and maintainability. The caller is responsible for capturing the INTO table information before removal and storing the results after execution.

Example transformation:

-- Input:
SELECT col1, col2 INTO #temp FROM table WHERE x > 5

-- Output (for execution):
SELECT col1, col2 FROM table WHERE x > 5

Implementations

impl IntoClauseRemover

pub fn remove_into_clause(statement: SelectStatement) -> SelectStatement

Remove INTO clause from statement and all nested subqueries

This creates a new statement with into_table set to None. The original statement is not modified.

Arguments

• statement - The SELECT statement to process

Returns

A new statement with INTO clause removed from all levels