sql if else then知識摘要

Oracle/PLSQL: IF-THEN-ELSE Statement - TechOnTheNet.com
Learn how to use the IF-THEN- ELSE statement in Oracle with syntax and examples. In Oracle, ... SQL ...

Using IF...ELSE - TechNet - Microsoft
The IF statement is used to test for a condition. ... ELSE. SQL Server 2008 R2 ... When the IF statement evaluates to TRUE, the statement or block of statements ...

IF-THEN-ELSE statement in PL/SQL - Tutorials for Selenium, DTD, Powerpoint, Tcl/Tk, XML, Software
PL/SQL IF-THEN-ELSE statement - Learn PL/SQL programming in simple and easy steps starting with PL/SQL syntax, data types, variables, constants, records, conditional statements, iterative statements, cursors, precedures, functions, exception handling ...

Use IF THEN ELSE IF : IF « PL SQL Statements « Oracle PL/SQL Tutorial
Use IF THEN ELSE IF : IF « PL SQL Statements « Oracle PL/SQL Tutorial ... SQL> SQL> SET SERVEROUTPUT ON SQL> SET ECHO ON SQL> DECLARE 2 employee_name_c CHAR(32); 3 employee_name_v VARCHAR2(32); 4 BEGIN 5 --Assign ...

T-SQL IF ELSE THEN Statement - SQL Server Central. Microsoft SQL Server tutorials, training &
T-SQL IF ELSE THEN Statement Rate Topic Display Mode Topic Options Author Message habby0123 Posted Monday, January 10, 2011 1:15 PM Forum Newbie Group: General Forum Members Last Login: Tuesday, February 15, 2011 12:37 PM Points: 3, GO ...

sql server - How do you perform an IF...THEN in an SQL SELECT? - Stack Overflow
How do I perform an IF...THEN in an SQL SELECT statement? For example; SELECT IF(Obsolete = 'N' or InStock = 'Y';1;0) as Salable, * FROM Product ... From this link: IF THEN ELSE in T-SQL : http://www.databasejournal.com/features/mssql/article.php ...

T-SQL IF ELSE THEN Statement - Page 2 - SQL Server Central. Microsoft SQL Server tutorials, training
T-SQL IF ELSE THEN Statement Rate Topic Display Mode Topic Options Author Message Steve Jones - SSC Editor Posted Wednesday, January 12, 2011 1:46 PM SSC-Dedicated Group: Administrators Last Login: Yesterday @ 3:56 PM Points: 33,182, ...

How do you perform an IF...THEN in an SQL SELECT?
2008年9月15日 - The CASE statement is the closest to IF in SQL and is supported on all versions of SQL Server .... From this link: IF THEN ELSE in T-SQL ...

Can you have if-then-else logic in SQL? - Stack Overflow
2013年2月26日 - This question has been asked before and already has an answer. If those answers do not fully address your question, please ...

SQL Server: CASE WHEN OR THEN ELSE END => the OR ...
2011年3月30日 - SQL Server: CASE WHEN OR THEN ELSE END => the OR is not ... It more closely fits the OP's question, and if you want to nest some ...