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...
UPDATE tab1 SET budgpost_gr1= CASE WHEN (budgpost in ('1001','1012','50055'...
To do this, ensure thesql_transpilerparameter ison(it'soffby default). When a function in thewhereclause is transpiled, you can see the case expression instead of the function in the predicate section of the plan: There are a few differences betweencasein PL/SQL andOracle SQL. Using case ...
2) Case:a) If the value of the <search condition> of some <searched when clause> in a <c...
Oracle数据库expdp用法以及注意事项 一、导出注意事项 检查数据库版本(用于决定导出时生成为哪个版本的dmp头文件) select version from v$instance; 也可以用sqlplus -v 查看。 检查字符集是否一致(字符集不一致,不能导入) select userenv('language') from dual; ...
使用case语句时出现Oracle SQL分组错误 是因为在使用case语句进行分组时,没有正确处理分组的逻辑或语法错误导致的。下面是对这个问题的详细解答: Oracle SQL是一种关系型数据库管理系统,它支持使用case语句进行条件判断和分组操作。在使用case语句时,需要注意以下几个方面: 语法错误:在编写case语句时,需要确保语法正确,...
selectdecode(sex,'M','Male','F','Female','Unknown')fromemployees; 1. 2. 貌似只有Oracle提供该函数,而且不支持ANSI SQL,语法上也没CASE WHEN清晰,个人不推荐使用。 3.2 在WHERE中特殊实现 SELECTT2.*, T1.*FROMT1, T2WHERE( T2.COMPARE_TYPE='A'ANDT1.SOME_TYPELIKE'NOTHING%')OR(T2.COMPARE_...
我不知道你为什么在里面使用整个查询CAST，但如果您使用SELECT以及()如下：（参见代码中的内联注解）...
else_clause::= Description of the illustration else_clause.eps In a simpleCASEexpression, Oracle Database searches for the firstWHEN...THENpair for whichexpris equal tocomparison_exprand returnsreturn_expr. If none of theWHEN...THENpairs meet this condition, and anELSEclause exists, then Oracl...
To use CASE, your WHERE clause would have to be: Code: where o.adddte between case When d = 2 then date1 when d = 3 then date3 else date5 end and case When d = 2 then date2 when d = 3 then date4 else date6 end