WHEN price IS NULL THEN 'Unpriced' WHEN price < 10 THEN 'Bargain' WHEN price BETWEEN 10 and 20 THEN 'Average' ELSE 'Gift to impress relatives' END, Title ORDER BY CASE WHEN price IS NULL THEN 'Unpriced' WHEN price < 10 THEN 'Bargain' WHEN price BETWEEN 10 and 20 THEN 'Average' EL...
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...
oracle case when的用法oracle case when的用法 Oracle case when是oracle中一种处理条件查询的表达式,类似于其他编程语言中的if-else结构。它的用法为: Syntax: CASE WHEN条件1 THEN结果1 WHEN条件2 THEN结果2 ... ELSE结果N END 功能:根据条件判断,给出不同的结果。 例子: SELECT CASE WHEN salary < 10000...
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 ...
WHEN en THEN rn [ ELSE r_else ]ENDCode language:SQL (Structured Query Language)(sql) 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 re...
但是运行的时候报错了:ERROR: invalid input syntax for type numeric:'优秀' 百度说:数据类型不符。 仔细想一下, 60是int,优秀是string,确实类型不符。 sql修改如下: 1 2 3 4 5 select case whenscore < 60then''|| 60 else'优秀'end fromstuent ...
我试图在datediff函数中实现CASE语句,但它引发了一个ERROR: syntax error at or near "case"。即使在使用以下简化查询时,也会出现错误:函数中不可 浏览4提问于2017-03-24得票数 0 回答已采纳 3回答 如何转换CASE WHEN THEN语句? 、、、 请帮我转换一下下面的语句: WHEN TITLE IS NOT NULL THEN 'A' END...
使用CASE when语句时出现RODBC“无效字符\n”错误 、、、 我正在尝试使用R中的RODBC在Oracle SQL数据库上执行一个简单的"if/then“语句。SQL语句在SQL Developer v4.0.2.15中运行良好,但在R中执行相同的语句时抛出错误select Variable2, CA 浏览2提问于2014-07-10得票数 1 2回答...
ELSE 'Bar' END AS mf_genres.name FROM mf_genres; END $$ DELIMITER ; What i want to do is select a field (genre can be rock, pop, dance etc), and change it depending on what it is called. Regards, Sam I've tried many different syntaxes, but cant get it right.Naviga...
The syntax of theCASEexpression, which conforms to the SQL standard, is: CASE WHEN <Boolean-expression> THEN <expression> [WHEN <Boolean-expression> THEN <expression>]* [ELSE expression] END CASEexpressions must include at least oneWHENexpression. The firstWHENexpression with aTRUEcondition is th...