================================================================================
from table
================================================================================
SELECT name FROM products;
--------------------------------------------------------------------------------

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

================================================================================
from many tables
================================================================================
SELECT products.name, i.name FROM products, items i, bar as baz;
--------------------------------------------------------------------------------

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

================================================================================
sub select
================================================================================
SELECT name FROM (select foo from bar) alias, (select baz from bar) as alias1;
--------------------------------------------------------------------------------

(source_file
  (select_statement
    (select_item
      (identifier))
    (select_from
      (from_item
        (from_select
          (select_statement
            (select_item
              (identifier))
            (select_from
              (from_item
                (from_table
                  (identifier)))))
          (identifier)))
      (from_item
        (from_select
          (select_statement
            (select_item
              (identifier))
            (select_from
              (from_item
                (from_table
                  (identifier)))))
          (identifier))))))

================================================================================
from function call
================================================================================
select name from foo(bar, baz);
--------------------------------------------------------------------------------

(source_file
  (select_statement
    (select_item
      (identifier))
    (select_from
      (from_item
        (from_function
          (function_call
            (identifier)
            (identifier)
            (identifier)))))))

================================================================================
from function call with alias
================================================================================
select name from foo() bar;
--------------------------------------------------------------------------------

(source_file
  (select_statement
    (select_item
      (identifier))
    (select_from
      (from_item
        (from_function
          (function_call
            (identifier))
          (identifier))))))

================================================================================
from function call with alias(1)
================================================================================
select name from foo() as bar;
--------------------------------------------------------------------------------

(source_file
  (select_statement
    (select_item
      (identifier))
    (select_from
      (from_item
        (from_function
          (function_call
            (identifier))
          (identifier))))))

================================================================================
from function call with alias in params
================================================================================
select name from foo() bar(alias1, alias2);
--------------------------------------------------------------------------------

(source_file
  (select_statement
    (select_item
      (identifier))
    (select_from
      (from_item
        (from_function
          (function_call
            (identifier))
          (identifier)
          (identifier)
          (identifier))))))

================================================================================
from function call with alias in params(1)
================================================================================
select name from foo() as bar(alias1, alias2);
--------------------------------------------------------------------------------

(source_file
  (select_statement
    (select_item
      (identifier))
    (select_from
      (from_item
        (from_function
          (function_call
            (identifier))
          (identifier)
          (identifier)
          (identifier))))))

================================================================================
from function call with alias in params(2)
================================================================================
select name from foo() as (alias1, alias2);
--------------------------------------------------------------------------------

(source_file
  (select_statement
    (select_item
      (identifier))
    (select_from
      (from_item
        (from_function
          (function_call
            (identifier))
          (identifier)
          (identifier))))))