oracle过程游标查询case语句时答案

【问题标题】：oracle procedure cursor query when case statementoracle过程游标查询case语句时
【发布时间】：2014-08-12 07:46:36
【问题描述】：

CURSOR BULKUPDATE IS 
    SELECT SUM(B.ACCOUNT_BALANCE) AS ACCOUNT_BALANCE,C.CIF AS CIF_ID FROM _ACCOUNTS_STAGING2 B JOIN  _RELATION_STAGING2 C
    ON B.ACCOUNT_IDENTIFICATION_NUMBER = C.ACCOUNT_IDENTIFICATION_NUMBER AND B.SOURCEID=C.SOURCEID JOIN _CUSTOMER_STAGING2 A ON A.CIF=C.CIF AND A.SOURCEID=C.SOURCEID WHERE  C.ROLE_ON_ACCOUNT IN
    (Select Rollonaccount From _Roleaccount_Master Where Aggregatebalance='Y')
    And upper(B.Scheme_Type) In (Select Scheme_Type From _Schema_Type_Master Where 
    Depository_Account = 'Y') Group By C.Cif;
    Rec_Bulkupdate Bulkupdate%Rowtype;

我正在使用此查询根据不同的 CIF 和来源来汇总帐户余额。问题是我想在_Schema_Type_Master的基础上计算四种不同类型的sum。例如我想现在检查 current_account='Y' 而不是 Depository_Account='Y'

_ACCOUNTS_STAGING2 B JOIN  _RELATION_STAGING2 C
    ON B.ACCOUNT_IDENTIFICATION_NUMBER = C.ACCOUNT_IDENTIFICATION_NUMBER AND B.SOURCEID=C.SOURCEID JOIN _CUSTOMER_STAGING2 A ON A.CIF=C.CIF AND A.SOURCEID=C.SOURCEID WHERE  C.ROLE_ON_ACCOUNT IN
    (Select Rollonaccount From _Roleaccount_Master Where Aggregatebalance='Y')
    And upper(B.Scheme_Type) In (Select Scheme_Type From _Schema_Type_Master Where 
    current_account='Y') Group By C.Cif;
    Rec_Bulkupdate Bulkupdate%Rowtype;

有什么方法或者我需要为此编写四个不同的游标吗？？

【问题讨论】：

标签： oracle stored-procedures case-when cursors

【解决方案1】：

您可以删除 dipository_account='Y' 和 current_account='Y' 以及 select as 中的用例 -

SELECT SUM(CASE WHEN Depository_Account = 'Y' THEN B.ACCOUNT_BALANCE ELSE 0 END) AS DIPOSITORY_ACCOUNT_BALANCE, 
       SUM(CASE WHEN current_account = 'Y' THEN B.ACCOUNT_BALANCE ELSE 0 END) AS CURRENT_ACCOUNT_BALANCE

然后是其余的代码。您将获得存款账户和当前账户总和的两个不同列。

如果需要过滤 dipository_account='Y' 和 current_account='Y'，则在 where 条件中使用它们并使用 or 运算符：

AND (dipository_account='Y' or current_account='Y')

【讨论】：