Description of the illustration simple_expression.eps
{ [ query_name. | [schema.] { table. | view. | materialized view. } | t_alias. ] { column | ROWID } | ROWNUM | string | number | sequence. { CURRVAL | NEXTVAL } | NULL }
{ [ query_name. | [schema.] { table. | view. | materialized view. } | t_alias. ] { column | ROWID } | ROWNUM | string | number | sequence. { CURRVAL | NEXTVAL } | NULL }