用oracle查詢逗號分隔的值

Question

我有桌子

id product     sharedwith  createdby   proddesc
1 100           78          71          ABC
2 200           73,45,46    71          LMN
3 300           45,46       78          IJK

我不會展示由78創建並與78共享的所有產品

Answer 1

where createdby = 78 or instr(','||sharedwith||',', ',78,') > 0