================================================================================
basic
================================================================================
insert into my_table values(1);
--------------------------------------------------------------------------------

(source_file
  (insert_statement
    (identifier)
    (insert_items
      (insert_item
        (number)))))

================================================================================
alias
================================================================================
insert into foo.my_table as alias values(1);
--------------------------------------------------------------------------------

(source_file
  (insert_statement
    (identifier)
    (as
      (identifier))
    (insert_items
      (insert_item
        (number)))))

================================================================================
default values
================================================================================
insert into foo.my_table default values;
--------------------------------------------------------------------------------

(source_file
  (insert_statement
    (identifier)
    (insert_items)))

================================================================================
many values
================================================================================
insert into foo.my_table values(1, 2);
--------------------------------------------------------------------------------

(source_file
  (insert_statement
    (identifier)
    (insert_items
      (insert_item
        (number))
      (insert_item
        (number)))))

================================================================================
different kind of values
================================================================================
insert into foo.my_table values(1, DEFAULT, (select 1, 2));
--------------------------------------------------------------------------------

(source_file
  (insert_statement
    (identifier)
    (insert_items
      (insert_item
        (number))
      (insert_item)
      (insert_item
        (select_statement
          (select_item
            (number))
          (select_item
            (number)))))))

================================================================================
insert from select
================================================================================
insert into foo.my_table select column1 from foo bar;
--------------------------------------------------------------------------------

(source_file
  (insert_statement
    (identifier)
    (insert_items
      (select_statement
        (select_item
          (identifier))
        (select_from
          (from_item
            (from_table
              (identifier)
              (identifier))))))))

================================================================================
insert from select(1)
================================================================================
insert into foo.my_table (select column1 from foo bar);
--------------------------------------------------------------------------------

(source_file
  (insert_statement
    (identifier)
    (insert_items
      (select_statement
        (select_item
          (identifier))
        (select_from
          (from_item
            (from_table
              (identifier)
              (identifier))))))))

================================================================================
returning
================================================================================
insert into foo values(1) returning *, 1;
--------------------------------------------------------------------------------

(source_file
  (insert_statement
    (identifier)
    (insert_items
      (insert_item
        (number)))
    (returning
      (select_item
        (star))
      (select_item
        (number)))))

================================================================================
with cte
================================================================================
with foo as (select * from bar)
insert into my_table values(1);
--------------------------------------------------------------------------------

(source_file
  (insert_statement
    (with_query
      (with_query_item
        (identifier)
        (select_statement
          (select_item
            (star))
          (select_from
            (from_item
              (from_table
                (identifier)))))))
    (identifier)
    (insert_items
      (insert_item
        (number)))))

================================================================================
returning into
================================================================================
insert into foo(bar, baz) select * from another
returning id into _var;
--------------------------------------------------------------------------------

(source_file
  (insert_statement
    (identifier)
    (identifier)
    (identifier)
    (insert_items
      (select_statement
        (select_item
          (star))
        (select_from
          (from_item
            (from_table
              (identifier))))))
    (returning
      (select_item
        (identifier)))
    (into
      (identifier))))