The ALL_TAB_COLUMNS view provides information on all columns in all user-defined tables and views. NameTypeDescription owner CHARACTER VARYING User name of the owner of the table or view in which the column resides. schema_name CHARACTER VARYING Name of the schema in which the table or view...
物化视图是一种特殊的物理表，“物化”(Materialized)视图是相对普通视图而言的。普通视图是虚拟表，应用...