Cioè così

codice:
TAB_MESTIERI
ID2 | mestiere|attrezzo1|attrezzo2|attrezzo3|...|attrezzo6|
-----------------------------------------------------------
1___|idraulico|__3______|__1______|____2____|...|___0______|
2___|muratore_|__10_____|__0______|____0 ___|...|___0______|
2___|falegname|__2______|__1______|____3____|...|___0______|