| ERROR | sort columns must be simple column names |
| CAUSE | An attempt was made to specify an expression as a sort column in a PARTITION BY, CLUSTER BY or ORDER BY clause. Only simple column names are permitted. |
| ACTION | Specify a simple column name. |
| ERROR | sort columns must be simple column names |
| CAUSE | An attempt was made to specify an expression as a sort column in a PARTITION BY, CLUSTER BY or ORDER BY clause. Only simple column names are permitted. |
| ACTION | Specify a simple column name. |