PLSQL: IF-THEN-ELSE There are three different syntaxes for these types of statements. Syntax #1: IF-THEN IF condition THEN {...statements...} END IF; Syntax #2: IF-THEN-ELSE IF condition THEN {...statements...} ELSE {...statements...} END IF; Syntax #3: IF-THEN-ELSIF IF con...
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...
IF...THEN...ELSIF...THEN...ELSE...END IF The syntax of this statement is: IF boolean-expression THEN statements [ ELSIF boolean-expression THEN statements [ ELSIF boolean-expression THEN statements ] ...] [ ELSE statements ] END IF; IF...THEN...ELSIF...ELSE statements provide the mea...
2) PL/pgSQL if-then-else statement Theif...then...elsestatement executes the statements in theifbranch if theconditionevaluates to true; otherwise, it executes the statements in theelsebranch. Here’s the syntax of theif...then...elsestatement: ...
syntax : IF condition1 THEN action1; [ELsIF condition2 THEN action2; [ELSE action3;] END IF; eg : IF condition THEN SQL or PL-SQL Commands; ELSE SQL or PL-SQL Statements; END IF; eg : DECLARE l_x NUMBER := 10; l_y NUMBER := 20; ...
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所有在块里使用的变量都必须在块的声明段里先进行声明，唯一的例外是FOR循环里的循环计数变量， 该变量...
IF x>y THEN max:=x;ELSE max:=y;END IF; | IF x > y THEN | max := x; | ELSE | max := y; | END IF; Delimiters Adelimiteris a simple or compound symbol that has a special meaning to PL/SQL. For example, you use delimiters to represent arithmetic operations such as addition...
IF condition THEN ELSIF condition THEN // 注意,此处 ELSIF , 没有那个E ELSE END IF; // 最后,结束要有 ; 分号 CASE selector WHEN expression1 THEN result1 // 这后边什么符号也没有 WHEN expression2 THEN result2 …… WHEN expressionN THEN resultN ...
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