NTILE function in OBIEE
This function determines the rank of a value in terms of a user-specified range. It returns integers to represent any range of ranks.
In other words, the resulting sorted data set is broken into several tiles where there are roughly an equal number of values in each tile.
NTile with numTiles = 100 returns what is commonly called the "percentile" (with numbers ranging from 1 to 100, with 100 representing the high end of the sort). This value is different from the results of the Oracle BI PERCENTILE function, which conforms to what is called "percent rank" in SQL 92 and returns values from 0 to 1.
numExpr is any expression that evaluates to a numeric value.
numTiles is a positive, nonnull integer that represents the number of tiles.
If the numExpr argument is not null, the function returns an integer that represents a rank within the requested range.