The Oracle/PLSQL CASE statement has the functionality of an IF-THEN-ELSE statement. Starting in Oracle 9i, you can use the CASE statement within a SQL statement. Syntax The syntax for the CASE statement in Oracle/PLSQL is: CASE [ expression ] WHEN condition_1 THEN result_1 WHEN condition...
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...
In this chapter: "IF Statement" In other chapters: "CASE Expressions" "Conditional Selection Statements" "Simple CASE Statement" "Searched CASE Statement" See Also: Oracle Database SQL Language Reference for information about the NULLIF function Oracle Database SQL Language Reference for inf...
如何使用 Oracle Case Statement 测试不等式问题描述 投票:0回答:3这很好用: select case (1+2) -- (or_some_more_complicated_formula_yielding_a_numeric_result) when 200 then '200' when 100 then '100' else 'other' end hi_med_low from dual ; 但我需要做更多这样的事情: select case (1+...
oracle.javatools.db.sql Contains an API for declaratively parsing SQL queries (SELECT statements). Uses ofCaseStatement.WhenTheninoracle.javatools.db.sql Methods inoracle.javatools.db.sqlthat returnCaseStatement.WhenThen Modifier and TypeMethod and Description ...
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 the...
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...
By default, Oracle checks content as well as casing, while comparing the two strings in "where" or "like" or "case" statements. For example, the statement given below will return 0. SELECT CASE WHEN 'abc'='ABC' THEN 1 ELSE 0 END AS MATCHED FROM DUAL; ...
1.2...此段代码是非法的原因是,被编译器将自动在每个右小括号 )后面插入一个分号,如下所示: anObject; .MethodA(); .MethodB(); .MethodC(); 1.5...error:跳转标签后缺少语句.expected statement, found 'case' case 3: goto C C: // 这里编译没问题 } } GoLand 中获取到的错误信息如下...原因...
在Oracle数据库中,Case语句用于根据条件执行不同的操作。当在Case语句中处理Null时,可以使用以下方法: 1. 使用IS NULL判断:可以使用IS NULL来判断某个字段是否为Null...