The Transpose Table action transposes a table. Transposing a table means turning rows into columns and columns into rows while preserving the ordering between rows and between columns.
As an example, consider the following table with 3 rows and 4 columns (including headers):
NAME John Michael Ross HEIGHT 1.80 1.56 2.09 WEIGHT 75 93 64
Transposing this table yields the following table with 4 rows and 3 columns (including headers):
NAME HEIGHT WEIGHT John 1.80 75 Michael 1.56 93 Ross 2.09 64
Note that transposing a table twice will not necessarily result in the original table.