oracle select as table

CREATE TABLE as SELECT * FROM and insert to select from two table copy statement differences[SQL]View PlainCopy Create table targer_table as select * from source_table INSERT INTO target_table (column1,column2) select Column1,column2

Temporary tables: Like normal tables, there is a structure, but the management of the data is not the same, the temporary table stores the transaction or the intermediate result set of the session, the data saved in the temporary table is only

1. Verify that the database has been successfully installedThe Select status from V$instance status displays the open2. How to return the Oracle database to the operating systemExit3, login Oracle database A total of two authentication

Oracle CBO RBO Detailed url:http://blog.163.com/love-love-l/blog/static/21078304201010175035270/ Http://blog.csdn.net/cnham/archive/2010/04/13/5482318.aspx First part What is Table analysis. Simply put, it is the information that collects tables

Reprinted from http://blog.csdn.net/cuker919/article/details/8514253Select Segment_name, bytes as sizeFrom User_segmentswhere Segment_type = ' TABLE ' and segment_name in (' view_jlzdh_mp_dl_day_01 ', ' view_jlzdh_mp_dl_day_02 ', ' View_jlzdh_mp_ Dl_

One. Query article 1. Query Oracle Table space usage Select b.file_id file ID, B.tablespace_name table Space, B.file_name Physical file name, The total number of bytes b.bytes, (B.bytes-sum (NVL (a.bytes,0))) has been used, Sum (NVL (a.bytes,0))

Over the past decade, Oracle has become one of the most professional databases in the world. For IT professionals, it is important to ensure that Oracle's powerful features are used to improve the productivity of their companies. One of the most

Oracle basic concepts and comparison with informix I. ConceptsUser: informix directly uses the user management system of the operating system. Generally, root and informix are used as super operators to manage other users. Oracle has its own user

Oracle copy table, temporary table, and view, oracle copy table ViewCreate a new_table table with the same structure as the old_table Table (no old_table Records) Create table new_table as select * from old_table where 1 = 0;   Create a new_table

Now there is a table (MT) with at least million data every day, and we plan to build a partition table in the form of monthly partitions. When partitioning, "Let Oracle run faster 2" said p21: SQL>alter system set