Updating Variables

For assignment, SQL uses the key word SET, as in SET X = X + 1 (read as "set X equal to X+1") rather than X: = X + 1 as found in many computer languages.

When the target is a base table, direct assignment is not available in SQL. Only differential update operators such as the usual INSERT, DELETE, and UPDATE are available.

Posted Date: 1/18/2013 1:27:13 AM | Location : United States

Ask an Expert

Related Discussions:- Updating variables, Assignment Help, Ask Question on Updating variables, Get Answer, Expert's Help, Updating variables Discussions

Write discussion on Updating variables
Your posts are moderated

Write your message here..

Related Questions

Pl/sql engine, Architecture The PL/SQL run-time system and compilation ... Architecture The PL/SQL run-time system and compilation is a technology, not an independent product. Consider this technology as an engine that compiles and executes the PL/SQL

Calculating a Shopper''s Total Spending, Many of the reports generated from... Many of the reports generated from the system calculate the total dollars in a shopper''s purchases. Follow these steps to create a function named TOT_PURCH_SF that accepts a shopp

Parameter and keyword description - loop statements, Parameter and Keyword ... Parameter and Keyword Description: label_name: This is an undeclared identifier which optionally labels a loop. When used, the label_name should be enclosed by double ang

Pits, PITS Depressions in secondary cell wall is called pit. A pi... PITS Depressions in secondary cell wall is called pit. A pit present on the free cell wall surface without its partner is called Blind pit. It consists of 2 parts -

I need sql data base, I need SQL Data Base Project Description: Netwo... I need SQL Data Base Project Description: Network SQL database and SQL Setup two 4 workstation Skills required are Data Entry, MySQL, SQL

Union all - sql, UNION ALL - SQL Further varieties of UNION arise when... UNION ALL - SQL Further varieties of UNION arise when we replace the key word DISTINCT by ALL in any of the foregoing examples, as in Example. ALL specifies that if row r appe

Use bulk binds - improve performance of application, Use Bulk Binds If... Use Bulk Binds If SQL statements execute inside a loop using the collection elements as bind variables, context switching between the PL/SQL & SQL engines can slow down the ex

Cursor attributes in pl sql, Cursor Attributes   The Cursors and curso... Cursor Attributes   The Cursors and cursor variables have 4 attributes which give you helpful information about the execution of a data manipulation statement. Syntax:

Using rollback - , Using ROLLBACK The ROLLBACK statements end the pres... Using ROLLBACK The ROLLBACK statements end the present transaction and undo any change made during the transaction. The Rolling back is helpful for two reasons. Firstly, if yo

Use tsql function sql server 2012, I want someone to write a TSQL function ... I want someone to write a TSQL function that returns the name of the ODBC DSN. I will use the queries below, to get information about the connection, but none of these return th