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 stateme...
In this example, because the film id 100 exists in the film table the found variable is true. Therefore, the statement in the else branch is executed. 3) PL/pgSQL if-then-elsif Statement Unlike the if and if...then...else statements that evaluate only one condition, the if then elsif...
ELSE 语句 END IF; IF...THEN...ELSE 语句指定一组备用的语句,这些语句将在条件求值为 FALSE 时执行。以下示例对上一个示例作了修改,以便使用 IF...THEN...ELSE 语句在雇员没有佣金时显示文本“Non-commission”。 DECLARE v_empno emp.empno%TYPE; v_comm emp.comm%TYPE; CURSOR emp_cursor IS SELECT ...
ELSE {...statements...} END IF; Syntax #3: IF-THEN-ELSIF IF condition THEN {...statements...} ELSIF condition THEN {...statements...} ELSE {...statements...} END IF; Here is an example of a function that uses the IF-THEN-ELSE statement: CREATE OR REPLACE Function IncomeLevel (...
ELSE statements END IF; IF...THEN...ELSE statements specify an alternative set of statements that should be executed if the condition evaluates to FALSE. In the following example, the previous example is modified so that an IF...THEN...ELSE statement is used to display the textNon-commissio...
3.LOOPS of PL/SQL 3.1 LOOP for LOOP, it is often used with EXIT ,CONTINUE ,which is just like "break" and "continue" in C for a loop. the grammar is like below: [ <> ]LOOPstatementsENDLOOP[label]; example is: LOOP-- some computationsEXITWHENcount >100; CONTINUEWHEN...
"ORA-06550: 行 1, 列 7: PLS-00201: 識別子 ' CHART ' は ORA-06550: 行1、列 7 PL/SQL: ステートメントは無視されます。 FRx の会社を既定として設定すると、このエラーが発生します。 原因 サーバーベースの...
Transact-SQL及数据库应用程序编程接口(API)游标函数 (我们只讨论后者)对根据 SQL-92 游标语法制定的游标,Transact-SQL 语言支持使用它们的语法 3、标准的SQL-92 语法定义游标: DECLARE cursor_name [ INSENSITIVE ] [ SCROLL ] CURSOR FOR select_statement [ FOR { READ ONLY | UPDATE [ OF column_name [ ...
问在PL/PGSQL存储过程的声明部分中使用'Case‘或'If’语句EN作为PL/PGSQL的新手，我正在尝试做一些在...
"ORA-06550:第1行,第7列: PLS-00201:必须声明标识符" CHART "ORA-06550:第1行,列 7 PL/SQL:语句" 将 FRx 公司设置为默认值时出现此错误。 原因 基于服务器的索引表(也称为 FRL 表)尚未填充。 解决方案 若要检查此情况,请对 Ross 数据库运...