SET SCHEMA ---+-> schema-string-literal ------+->
                +-> <schema-parameter> ---------+
                +-> <schema-parameter-marker> --+

  schema-string-literal =

  --> ' --> schema-expression --> ' -->

  schema-expression  =

  --+------------------------------------------+-+
    +------> <catalog-name> ------------+-> . -+ |
    +-> " -> <alias>.<catalog-name> ->"-+        |
    |   +----------------------------------------+
    |   +--------------> <name-of-schema> ------+->
    +-> " -> <alias>.<name-of-schema> --> " ----+