In the separate rows there are values in columns that there is a value in only one column in each row (I mean about columns from [1_noc1] to [15_pu…] which are located on the right from date column [0_data]. I want to group this data by the date - [0_data] column, to have only one record / row for each day, and to have all values concerning this date moved to one row as on the picture2.
The trick here is to group by the column you need, in your case it would be 0_data, and then keep the Maximum value of each column, since null or empty values are sorted as minimum, and you want to keep the cells that have a value, like this:
Thanks a lot @bruno29a for so great and prompt answer It works fantastic. I made various tries, but didn’t use maximum as aggregation method. And sorry for not attached source data this time. I will do it always in the future.