This function returns the 1st value of the unsorted population.
V1 |
V2 |
V3 |
V4 |
V5 |
V6 |
5 |
25 |
2 |
25 |
25 |
30 |
The above example would return 5, because it is the 1st value in the population.
value_exp can be an expression of any SQL data type.