ORACLE PLSQL 简单case语句 1 简单的case语句会给出一个表达式，并将可能发生的结果与其做比较，如果匹配成功则执行对应的语句 2 语法：[ <<lable_name>> ]CASE case_operandWHEN when_operand1 THEN statement1;[WHEN when_operand2 THENstatement1;] ...[ELSEstatementN]END CASE [ lable_name ];3 说明...
CASE expression syntax is similar to an IF-THEN-ELSE statement. Oracle checks each condition starting from the first condition (left to right). When a particular condition is satisfied (WHEN part) the expression returns the tagged value (THEN part). If none of the conditions are matched, the...
In this example, if the deptno column has a 10 in it, the SQL query will return the value accounting rather than the number 10. If the deptno is not 10, 20, 30, or 40, then the CASE statement will fall through to the ELSE clause, which will return unassigned. Note that with a s...
Methods inoracle.javatools.db.sqlwith parameters of typeCaseStatement.WhenThen Modifier and TypeMethod and Description voidCaseStatement.setWhenThens(CaseStatement.WhenThen[] whenThens) Constructors inoracle.javatools.db.sqlwith parameters of typeCaseStatement.WhenThen ...
The simple CASE statement has the following structure: CASE selector WHEN selector_value_1 THEN statements_1 WHEN selector_value_1 THEN statement_2 ... ELSE else_statements END CASE; Code language: PostgreSQL SQL dialect and PL/pgSQL (pgsql) Let’s examine the syntax of the simple CASE ...
CASE expression syntax is similar to an IF-THEN-ELSE statement. Oracle checks each condition starting from the first condition (left to right). When a particular condition is satisfied (WHEN part) the expression returns the tagged value (THEN part). If none of the conditions are matched, the...
FromOracle Database 23ai, theautomatic SQL transpilercan extract SQL expressions in PL/SQL. These are then part of the SQL statement, so at runtime it's as-if the function doesn't exist! To do this, ensure thesql_transpilerparameter ison(it'soffby default). When a function in thewhere...
Procedure : CASE statement using SQL 4152 Tarun Bajaj September 04, 2012 02:28PM Re: Procedure : CASE statement using SQL 1201 Rick James September 05, 2012 09:16PM Sorry, you can't reply to this topic. It has been closed.This...
statement ::= セマンティクス simple_case_statement selector 値が1回評価され、複数の選択肢から1つ選択するためにその値が使用される式。selectorの値は、BLOB、BFILEまたはユーザー定義型を除く任意のPL/SQL型になります。 WHENselector_valueTHENstatement ...
when expression 1 then pl/sql_statement1; when expression 2then pl/sql_statement2; …… when expression Nthen pl/sql_statement n; [else pl/sql_statement n+1;] end; 虽然CASE语句的作用与IF..ELSIF..ELSE..END IF语句相同,都可以实现多项选择,但是CASE语句可以以一种更简洁的表示法实现该功能。