與Oracle查詢

Question

逗號分隔值，我有表

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

我不會顯示其由78創造，並與78

Answer 1

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