compare 2 columns in different dataframes
问题 if I have 2 tables b ,c and I want to go for c and check column called parent if the value equal to the value of column PrentSKU in table b, then bring the value of column ChildSKU from table b and put it in column Style in table c, else do nothing I tried to use compare methods but the table size is different so it gave me an error, and I also tried for loop but it also gave me an error that The truth value of a Series is ambiguous. Use a.empty, a.bool(), a.item(), a.any() or a.all(). The