What Does A Lookup Function Do? How Do The Different Variations Of Th

1.	What Does A Lookup Function Do? How Do The Different Variations Of The Lookup Function Differ?
Answer» All lookup functions RETURN ONE ROW for each row in the source. They differ in how they choose which of several matching ROWS to return. All lookup functions return one row for each row in the source. They differ in how they choose which of several matching rows to return.

What Does A Lookup Function Do? How Do The Different Variations Of The Lookup Function Differ?

Answer»

All lookup functions RETURN ONE ROW for each row in the source. They differ in how they choose which of several matching ROWS to return.

All lookup functions return one row for each row in the source. They differ in how they choose which of several matching rows to return.