This Oracle tutorial explains how to use the Oracle/PLSQLCASE statementwith syntax and examples. Description The Oracle/PLSQL CASE statement has the functionality of an IF-THEN-ELSE statement. Starting in Oracle 9i, you can use the CASE statement within a SQL statement. Syntax The syntax for ...
CASE expression syntax is similar to an IF-THEN-ELSE statement. Oracle checks each condition starting from the first condition (left to right). When a particular condition is satisfied (WHEN part) the expression returns the tagged value (THEN part). If none of the conditions are matched, the...
In this syntax, Oracle compares the input expression (e) to each comparison expression e1, e2, …, en. If the input expression equals any comparison expression, theCASEexpression returns the corresponding result expression (r). If the input expression e does not match any comparison expression,...
Oracle Developer Studio C allows an extension found in some compilers, known as case ranges. A case range specifies a range of values to associate with an individual case label. The case range syntax is: case low ... high : A case range behaves as if case labels had been specified ...
The format for a searchedcaseexpression is the syntax shown above: The core differences between this and simple expressions are: You can use multiple selectors The selectors are evaluated in everywhenclause the database runs Any SQL conditions that returntrueorfalseare possible in the<boolean c...
,在END IF后需要加上分号“;”以表示语句结束,其他语句如CASE、LOOP等也是相同的。...CASE 表达式 select CASE sva WHEN 1 THEN '男' ELSE '女' END as ssva from taname where sva !...参考资料: 1、Mysql if case总结 2、Leetcode swap salary 3、select case when if 的一些用法 4、IF Syntax...
来转换数据的,就需要用条件控制语句来实现。...UPDATE salary SET sex = IF(sex = 'm', 'f', 'm') 也可以利用条件语句,在搜索的时候,直接进行数据转换 select *,(CASE WHEN sex='1'...参考资料: 1、Mysql if case总结 2、Leetcode swap salary 3、select case when if 的一些用法 4、IF Syntax...
Basic syntax CASE expression syntax is similar to an IF-THEN-ELSE statement. Oracle checks each condition starting from the first condition (left to right). When a particular condition is satisfied (WHEN part) the expression returns the tagged value (THEN part). If none of the conditions are ...
Simple CASE expressions use expressions to determine the returned value and have the following syntax: CASE search_expression WHEN expression1 THEN result1 WHEN expression2 THEN result2 ... WHEN expressionN THEN resultN ELSE default_result
Methods inherited from class oracle.olapi.syntax.SyntaxObject fromSyntax, fromSyntax, fromSyntax, fromSyntax, fromSyntax, isValid, toSyntax, toSyntax, toSyntax, toSyntax, toSyntaxMethods inherited from class java.lang.Object clone, equals, finalize, getClass, hashCode, notify, notifyAll...