PG supports multi-dimensional arrays where all data can be stored in a flat memory area. The array must have a single element type. CRDB allows arrays to hold nested arrays as elements. There are ...

https://github.com/rogerjdeangelis/utl-sql-arrays-to-simplfy-summarization-of-many-variables-in-sas-r-python-excel-sql-arrays https://communities.sas.com/t5/SAS ...