The show*() methods can be used for schema and metadata discovery queries and are equivalent to HELP FOREIGN SERVER/DATABASE/TABLE queries on the Teradata system. The showColumns method displays the schema of a target table specified by a fully-qualified name (for example: schema.table or database.schema.table).
scala> s1.showColumns("user1.players")
+--------+--------+-------+
|COL_NAME|COL_TYPE|COMMENT|
+--------+--------+-------+
|number |int | |
|name |string | |
+--------+--------+-------+