Wynik sql_2 ma byc warunkiem (where) sql_1
mozna niby tak:
SELECT * FROM `tabela_1` AS xx, tabela_2 AS yy WHERE yy.`id` <> 'NULL' AND xx.id = (SELECT xx.`id`, xx.id_slowa FROM `tabela_1` AS xx, Tabela_1 AS yy WHERE yy.id = xx.id AND xx.id_slowa = '1')
i niby dziala
tylko ze pierwszy select
SELECT * FROM `tabela_1` AS xx, tabela_2 AS yy
duplikuje mi wiersze jak sie pozbyc tych duplikatow??