this statement is equivalent to nested IF...THEN...ELSE...IF...THEN statements, but only one END IF is needed. The following example uses an IF...THEN...ELSIF...ELSE statement to count the number of employees by compensation, in steps of $25,000. ...
问在plsql中的if条件中的异常EN在OraclePL/SQL语句块中exception的异常处理部分是非常重要的组成部分，它...
行4: NULL PL/SQL语句表明什么事都不做,这句不能删去,因为PL/SQL体中至少需要有一句; 行5: END关键词表明PL/SQL体的结束 2.SELECT INTO STATEMENT 将select查询的结果存入到变量中,可以同时将多个列存储多个变量中,必须有一条 记录,否则抛出异常(如果没有记录抛出NO_DATA_FOUND) 例子: BEGIN SELECT col1,...
[*]procedure parse(c in integer, statement in varchar2, language_flag in integer):对动态游标所提供的sql语句进行解析,参数C表示游标,statement为sql语句,language-flag为解析sql语句所用oracle版本,一般有V6,V7跟native(在不明白所连database版本时,使用native); [*]procedure define_column(c in integer, p...
sql 数据库 mysql 表名 转载 落笔成诗 5月前 10阅读 sqlserverifelse输出 文章目录if语句1.引入库2.读入数据总结 if语句1.语法:if 条件表达式 then plsql语句 end if;语义:当条件成立时,执行then 和end if 之间的代码,如果条件不成立,不做任何操作。--写一个代码块,从键盘接收一个值,如果这个值大于10,那...
PLSQL:if then else语句段 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 ...
2019-12-19 18:59 −if 语句的判断条件,从本质上讲,判断的就是命令的退出状态。 语句语句格式同一行书写注意点用例1用例2 if 语句 if conditionthen statement(s)fi if condition; then statement(s... 声声慢43 0 588 if else条件语句 2019-12-23 11:49 −Java 条件语句 if if…else if…else if...
It’s also fairly common to get a headache trying to make sense of all of that. You can often reduce the trauma of headache by trading off the simplicity of the IF statement itself (one level of IF and ELSIF conditions) for the simplicity of clauses within multiple levels: ...
Here is an example of a function that uses the IF-THEN-ELSE statement: CREATE OR REPLACE Function IncomeLevel ( name_in IN varchar2 ) RETURN varchar2 IS monthly_value number(6); ILevel varchar2(20); cursor c1 is select monthly_income ...
We treat conditional compilation blocks as part of the PL/SQL language. We implemented two variants A conditional compilation statement A conditional compilation expression With that we can deal with common conditional compilation code, but not with everything. In your case the conditional compilation ...