select 1 from dual oracle

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Dual in oracle

In oracle dual explanation, oracle introduces dual to conform to the Syntax 1. From the perspective of name, dual is not a acronym, but a complete word. Dual refers to logarithm, Which is dual and dual when used as an adjective. 2. The dual table in

Dual usage in Oracle

Basically, Oracle introduced dual as a syntax-compliant1. We start with the name, dual is not an abbreviation, itself is the complete word. Dual noun means logarithm, when doing adjectives refers to two heavy, two yuan.2. The dual table in Oracle is

[ORACLE] Explain the oracle dual table

1. Use of DUAL tables Dual is an existing table in Oracle that can be read by any user. It is often used in Select statement blocks without a target table-view the current connected user SQL> select user from dual; USER ------------------------------

Oracle dual table details

Read itpub previous post: http://www.itpub.net/viewthread.php? Tid = 981212 & extra = & page = 1Want to learn the following Oracle dual table. Oracle asktom explanation: http://asktom.oracle.com/pls/asktom/f? P = 100: 11: 0: p11_question_id: 156281

Oracle Dual table details

Oracle Dual table details 1. Use of DUAL tablesDual is an existing table in Oracle that can be read by any user. It is often used in Select statement blocks without a target table.-- View the current connected userSQL> select user from dual;USER-----

An explanation of the dual table in Oracle

Oracle the dual table in the detailed1,DUALpurpose of the tableDual is a physically existing table in Oracle that can be read by any user, often in a SELECT statement block without a target table--View current connected userSql> Select User from

Oracle's Dual Table

1, the use of dual tableDual is a physically existing table in Oracle that can be read by any user, often in a SELECT statement block without a target table--View current connected userConnected to Oracle Database 10g Enterprise Edition Release 10.1.

Oracle's Dual Table detailed

1, the use of dual table Dual is an actual table in Oracle that can be read by any user and is often used in a SELECT statement block that does not have a target table (1) View current connected users Sql> Select User from dual; USER -----------

Funny test of dual table

Funny test of dual table C:/> sqlplus "/As sysdba" SQL * Plus: Release 9.0.1.0.1-production on Thu Aug 8 09:20:57 2002 (C) Copyright 2001 Oracle Corporation. All rights reserved. Connected:Oracle9i Enterprise Edition Release 9.0.1.1.1-ProductionWith

Oracle Study Notes dual table

Recently, Oracle encountered a special table dual. I think oracle users have a special liking for dual. As a result, I found some posts on the Internet and thought it would be better to post them here for everyone to learn. Dual is a virtual table

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