I am searching for way to concatenate raws of two tables with same columns into one table. I have not found a way to do this with standard functions.
Assuming I have tables T1 and T2 and want to join into T_Join (see. image below)
What I am actually trying to achieve is a join() of tables which should be joint in case the raws are same on parameter x OR parameter y. For this I wanted to perform two join operations and then concatenate the result.
Any hints would be greatly appreciated!