In these examples, we decide as per the conditions. For example, if I get a bonus then only I will go for an international vacation else I will go for domestic vacations. We need to incorporate these conditions-based decisions in programming logic as well. SQL Server provides the capability...
SQL>setserverout onSQL>DECLARE2gradeCHAR(1):='B';3appraisalVARCHAR2(20);4BEGIN5appraisal:=6CASEgrade7WHEN'A'THEN'Excellent'8WHEN'B'THEN'Very Good'9WHEN'C'THEN'Good'10WHEN'D'THEN'Fair'11WHEN'F'THEN'Poor'12ELSE'No such grade'13END;14DBMS_OUTPUT.PUT_LINE('Grade '||grade||' is '...
In this IF-THEN-ELSE statement example, we've created a function called IncomeLevel. It has one parameter calledname_inand it returns a varchar2. The function will return the income level based on the employee's name. Advertisement
今天,写存储过程时写成了:if...then...else if...else...end if.能编译通过,但是有问题,后来实在是找不到问题怀疑写错了这个语句,后来在网上查了一下,结果不是else if 而是elsif.改过来后就正常了。 Oracle/PLSQL: IF-THEN-ELSE Statement There are three different syntaxes for these types of statemen...
mysql 触发器 if then elseif else 的运用 自己第一次写触发,想使用两个三个条件语句并列使用,但是不管怎么写都保存不了,最后看了吴大哥的博文,试了是if..then ...end if;中使用if并列是可以。 我是不知道是为什么,有大神知道可以详解。下面贴上我的触发器: 判断
構文の詳細は、「IF文」を参照してください。 ヒント: 次のようなIF文の使用は避けてください。 IF new_balance < minimum_balance THEN overdrawn := TRUE; ELSE overdrawn := FALSE; END IF; かわりに、BOOLEAN式の値をBOOLEAN変数に直接代入してください。
请问您见过最惊艳的sql查询语句是什么？ 目录 收起 1. 复杂的多表连接查询，如何在一个查询中有效...
对象键:定义 SQL 生成规则名称,main 表示入口 SQL,从该 SQL 语句开始生成。 对象值:定义具体生成规则。可以是 SQL 字符串或者对象。 sql:定义模板 SQL 语句,可以是任意字符串,比如一组字段、一段查询条件、一段计算逻辑、完整 SQL 等。 params:静态参数,解析器会优先将该变量替换到当前语句的 #{变量名} 中 ...
IF...THEN...END IF The syntax of this statement is: IF boolean-expression THEN statements END IF; IF...THEN statements are the simplest form of IF. The statements between THEN and END IF are executed only if the condition evaluates to TRUE. In the following example, an IF...THEN stat...
Let’s illustrate with an example. The following SQL statement will return “Monday” if today is a Monday, otherwise it returns “Not a Monday”. SETDATEFIRST1-- first day of the week is a MondaySELECTCASEWHENDATEPART(WEEKDAY,GETDATE())=1THEN'Monday'ELSE'Not a Monday'END ...