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
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...
问带有IF ELSE语句的postgresql plpsql函数EN条件语句，是程序中根据条件是否成立进行选择执行的一类语句，...
2) PL/pgSQL if-then-else statement The if...then...else statement executes the statements in the if branch if the condition evaluates to true; otherwise, it executes the statements in the else branch. Here’s the syntax of the if...then...else statement: if condition then statements;...
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...}...
The syntax of this statement is: IF boolean-expression THEN statements 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...
指定Transact-SQL 语句的执行条件。 如果满足条件,则执行后跟IF关键字及其条件的 Transact-SQL 语句:布尔表达式返回TRUE。 可选ELSE关键字引入了另一个 Transact-SQL 语句,该IF语句在条件不满足时执行:布尔表达式返回FALSE。 Transact-SQL 语法约定 语法 syntaxsql ...
Transact-SQL 语法约定 语法 syntaxsql复制 IFboolean_expression{sql_statement|statement_block} [ELSE{sql_statement|statement_block} ] 参数 boolean_expression 返回TRUE或FALSE.如果boolean_expression包含语句SELECT,则必须SELECT将语句括在括号中。 { sql_statement | statement_block } ...
A case expression returns a single value. In PL/SQL you can write a case statement to run one or more actions. The differences between case expressions and statements are: You complete them withend case(instead of justend) Eachthen/elseclause contains a statement, rather than returning a val...
Transact-SQL Syntax Conventions Składnia IF Boolean_expression { sql_statement | statement_block } [ ELSE { sql_statement | statement_block } ] Arguments Boolean_expression Is an expression that returns TRUE or FALSE. If the Boolean expression contains a SELECT statement, the SELECT statement ...