一IF..THEN IF condition THEN statements 1; statements 2; ... END IF; 二IF..THEN...ELSE IF condition THEN statements 1; statements 2; ... ELSE statements 1; statements 2; ... END IF; 三IF..THEN..ELSIF IF condition1 THEN statement1; ELSIF condition2 THEN statement2; ELSIF condition...
语句1(条件成立执行语句1!) else 语句2(否则,即条件不成立执行语句2!) end if; */ —–3、 if-then-elsif语句 if condition1 then Statements1 elsif condition2 then –注意是elsif而不是elseif Statements2 else Statements3 end if; /* if 条件1 then 语句1(条件1成立,执行语句1!) elsif condition2...
sql、oracle、sql-update、case、conditional-statements 我需要更新我的oracle表中新创建的列。为此,我需要使用行中的现有值来决定如何填充此列,我得到了错误:这是我的问题: SCHEMA_NAME.TABLE_NAME OCO= IF CO= 'Y' AND COM='Y' THEN 浏览2提问于2015-02-18得票数 12 回答已采纳 6回答 PreparedStatement...
ELSE 'OK to rent to minors.' END AS Policy FROM DVDs ORDER BY Name; 已赞过 已踩过< 你对这个回答的评价是? 评论 收起 匿名用户 推荐于2017-08-03 展开全部 oracel数据库中,sql语句中没有if else 可以使用 decode() 或者 case when then else end select decode('1','1','相等','不相...
DECLAREexception_nameEXCEPTION;BEGIN...IFCONDITIONTHENRAISEexception_name;ELSE...ENDIF;EXCEPTIONWHENexception_nameTHENERROR-PROCESSINGSTATEMENTS;END; 故上例可修改为: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 DECLAREv_enamevarchar2(10);v_empnonumber(4):=&v_empno;e_invalid_no exception;BEGIN...
Eachthen/elseclause contains a statement, rather than returning a value For example, you could write a statement that assigns grade letters and pass/fail outcomes to variables: Functionally these are similar to a series if-elsif statements in PL/SQL. ...
1.在PL/SQL中使用DML语言,使用ORACLE提供的名为SQL的隐示游标 2.CURSOR FOR LOOP,用于for loop 语句 1举例: declare begin update departments set department_name=department_name; --where 1=2; dbms_output.put_line('update '|| sql%rowcount ||' records'); ...
hivesql嵌套查询 hive中casewhen嵌套 case具有两种格式。简单case函数和case搜索函数。 1.简单case函数casesex when ’1’ then ’男’ when ’2’ then ’女’else ’其他’ end 2.case搜索函数casewhen sex = ’1’ then ’男’when sex = ’2’ then ’女’else ’其他’ en ...
When FIPS flagging is active, your SQL statements are checked to see whether they include extensions that go beyond the ANSI/ISO SQL92 standard. If any non-standard constructs are found, then Oracle Database flags them as errors and displays the violating syntax. ...
EXEC SQL WHENEVER NOT FOUND CONTINUE; LOOP display 'Employee number? '; read emp_number; IF emp_number = 0 THEN exit loop; EXEC ORACLE OPTION (HOLD_CURSOR=YES); EXEC SQL SELECT ENAME, SAL INTO :emp_name, :salary FROM EMP WHERE EMPNO = :emp_number; display 'Salary for ', emp_name...