RDBMS/Oracle1 Hierarchical Queries 계층 구조 쿼리들 https://docs.oracle.com/en/database/oracle/oracle-database/21/sqlrf/Hierarchical-Queries.html SQL Language Reference docs.oracle.com https://docs.oracle.com/cd/B19306_01/server.102/b14200/queries003.htm Hierarchical Queries Hierarchical Queries If a table contains hierarchical data, then you can select rows in a hierarchical order using the hierarchical query clause: hierarchical_query_clause::=.. 2021. 11. 29. 이전 1 다음
