ABC/CDE/EFG/SQL/HIJ
INDEXOFARRAY(SPLIT("ABC/CDE/EFG/SQL/HIJ","/"),4)
INDEXOFARRAY(split("ABC/CDE/EFG/SQL/HIJ","/"),3)
第4个前的如果指第3个用楼上的,如果指1-3参考
REPLACE(REMOVEARRAY(SPLIT("ABC/CDE/EFG/SQL/HIJ","/"),4,LEN(SPLIT("ABC/CDE/EFG/SQL/HIJ","/"))),",","/")