#coleasce

Find first not null value from different columns TIP # 47

  Problem:

Sometimes, it might be possible that we need not null value only from particular columns and if all column have null value then we provide a default value.

Lets understand this by a general and very interesting example

suppose a friend come to your house and you want to give him a treat then you check your first column or we can say first option “Is there any thing to eat ?” if that…