SQL++ Alignment: UNION ALL is not working for all the query types. Keyword error UNION.

(SELECT * FROM  simple_table_db_83597457_simple_table_shadow   WHERE  ((((decimal_field1 > 4912) OR (decimal_field1 = 4912)) OR (int_field1 = 52000873) OR char_field1 < "N")) OR (bool_field1 != false)    ORDER BY   int_field1  DESC)  

UNION ALL 

(SELECT * FROM  simple_table_db_83597457_simple_table_shadow   WHERE  ((primary_key_id NOT BETWEEN "1" and "999" AND decimal_field1 >= 4912)) AND ((bool_field1 OR (int_field1  IN [  44752 , 55191 , 56574 , 57419 , 544073  ]) OR (int_field1 IS NULL))) OR ((int_field1 < 52000873) AND (int_field1 > 52000873)) AND ((bool_field1 = false AND decimal_field1 IS NOT NULL))    ORDER BY   int_field1 , decimal_field1 ,  varchar_field1 , char_field1 )

[

  {

    "code": 1,

    "msg": "Syntax error: In line 2 >>UNION ALL << Encountered \"UNION\" at column 1. ",

    "query_from_user": "(SELECT * FROM  simple_table_db_83597457_simple_table_shadow   WHERE  ((((decimal_field1 > 4912) OR (decimal_field1 = 4912)) OR (int_field1 = 52000873) OR char_field1 < \"N\")) OR (bool_field1 != false)    ORDER BY   int_field1  DESC)  \nUNION ALL \n(SELECT * FROM  simple_table_db_83597457_simple_table_shadow   WHERE  ((primary_key_id NOT BETWEEN \"1\" and \"999\" AND decimal_field1 >= 4912)) AND ((bool_field1 OR (int_field1  IN [  44752 , 55191 , 56574 , 57419 , 544073  ]) OR (int_field1 IS NULL))) OR ((int_field1 < 52000873) AND (int_field1 > 52000873)) AND ((bool_field1 = false AND decimal_field1 IS NOT NULL))    ORDER BY   int_field1 , decimal_field1 ,  varchar_field1 , char_field1 )"

  }

]