create or replace view

CREATEORREPLACEVIEWUIA. struct (SELECTt1.ID, t1.USER _ NAME, t1.USER _ PASS, t1.USER _ IDCARD, t1.USER _ ALIAS, t1.USER _ EMAIL, t1.USER _ STUDENTID, t1.USER _ WORKERID, t1.USER _ TYPE, t1.USER _ PHONENUMBER, t1.USER _ STATUS, uia_userfromtabFROMuia

If you want to restore a database on a colleague's machine to your own machine, the DMP file provided by the colleague cannot be used. I suddenly thought that Oracle10G was in the Oracle9I stage. If you want to restore a database on a colleague's

--recently in the mobile Phone model dimension analysis statistics, the mobile phone model appeared in Chinese garbled phenomenon, the final reason for finding, in the process of JSON parsing, garbled, location is the problem of separators ' | |

1. VIEW)1.1 concepts View ----- is a "logical table" defined by a SELECT query statement (which can be a single table or multi-Table query). It is a "virtual table" with only definitions but no data ". when creating a view, you only save the

1. When connecting to the remote server from Oracle, you must install the client and overwrite the D: \ oracle \ product \ 10.2.0 \ db_1 \ NETWORK \ ADMIN \ tnsnames. ora file. If the connection fails, restart the OracleServiceORCL service. For

For views associated with more than two tables, Oracle cannot tell which table should be updated The instead of trigger meets our requirements for the DML view. The displayed information tells oracle which table to update. Unlike other triggers, The

Reprinted:   How to solve Oracle Exp-00003 Problems The day before yesterday when the data import occurred Exp-00003 error, also encountered this problem before, then the solution is to the database server local export, the problem solved,

First, Oracle dictionary tables and views can be divided into three layers. 1.1 X $ table This table is the basis for running Oracle databases. It is dynamically created by Oracle Applications When the database is started. These sub-tables are

Oracle (1) --> detailed description of database objects (Text explanation, first of all a small understanding ~), Oracle details---- Database object: a set of logical structures ----1. Synonym: alias of an existing object/*Purpose:Simplify SQL

When I was writing a stored procedure, I used the start time and end time to create a view. So I wrote a process like this: Procedure prc_CreateViewOBookTcert (p_startdate in date, -- start date of statisticsP_enddate in date) -- end date of

Recently, I encountered a problem. After Oracle 10 Gb Database Export, the import in 9I was actually problematic, so After trying to install 9I and connect to 10 Gb, use the 9I EXP command to export the data. Who knows whether the exported data is

The following error is reported when you use the Oracle 11g EXP command to back up the database: EXP-00003: no storage definition found for segment (11,307) "EXP-00003: no storage definition found for segment ...... "Error, which is related to a

If you want to restore a database on a colleague's machine to your own machine, the DMP file provided by the colleague cannot be used. I suddenly thought of Oracle 10 Gb, and I was still in the Oracle 9I stage. Back up again with your own 9I client,

############################ Error symptom: ###############################The following error occurs when exporting data with 9i exp: F: \ Oracle \ bin> exp wssw/foresee @ cradle203 file = d: \ sb_sbxx_zb.dmp tables = sb_sbxx_zb Export: Release 9.2.

[Oracle11g, 8] data dictionary and Character Set, oracle11g Character SetI. Data Dictionary: oracle's data dictionary records the metadata of database management. It is a core file of life and death for databases. 1. Place the data dictionary in the

Oracle _ view, oracle View Oracle _ view ① View1. A view is a virtual table.A view is built on an existing table. The tables created by the view are called base tables.The statement that provides data to the view is a SELECT statement, which can be

Oracle constraints (constraints) affect the query plan, oracleconstraintsOriginal article: http://www.oracle.com/technetwork/issue-archive/2009/09-may/o39asktom-096149.htmlHow constraints in oracle affect the query planIt is generally considered

In Oracle DB 12.1.0.2, SYS. ALL_CONSTRAINTS and SYS. ALL_CONS_COLUMNS are defined, SYS. ALL_CONSTRAINTS is defined as follows:   CREATE OR REPLACE VIEW ALL_CONSTRAINTS ASselect OWNER, CONSTRAINT_NAME, CONSTRAINT_TYPE, TABLE_NAME,

A view is a logical table based on one or more tables or views. It does not contain data and allows you to query and modify the data in the table. A view-based table is called a base table. Oracle database objects are divided into five types: tables,

1 string connection SQL> select 'abc' | 'def 'from dual; 'abc' | ------ Abcdef2 lower case SQL> select lower ('abc012 '); Lower -------- Abc012 3 capital select upper ('abc012 '); Upper--------ABC012 4. Left completionSelect lpad ('abc', 5, '0 ');