Question

我有这样的查询

SELECT EDR.DEPT_ID             AS DEPT_ID,
  EMP.EMPLOYEE_ID                AS EMPLOYEE_ID,
  ELD.LOAN_ID                  AS LOAN_ID,
  ELD.LOAN_STATUS                       AS LOAN_STATUS
FROM EMP_DEPT_REL EDR
INNER JOIN EMPLOYEE_MANUAL EMP
ON EDR.EMPLOYEE_ID = EMP.EMPLOYEE_ID
LEFT OUTER JOIN EMPLOYEE_LOAN_DETAIL ELD
ON ELD.LOAN_ID   = EMP.LOAN_ID
AND ELD.DISPLAY_FLAG       = 'Y'
WHERE EDR.DEPT_ID IN ('123');

Employee_Manual是我们将拥有由应用程序手动输入的员工详细信息的表。
Emp_dept_rel是员工与部门之间的关系。
Employee_loan_detail将获得组织中所有员工的贷款详细信息。

我想从部门中关联的所有员工获取数据，我将其作为输入传递。

我需要的是，

获取employee_manual表中的所有员工。
如果有的话是Employee_loan_details中的条目，然后我应该得到详细信息贷款，只有当国旗设置为＆＃34; Y＆＃34;在Employee_loan_details中。
即使没有详细信息，我们也需要显示员工 Employee_loan_details

需要获取在特定部门贷款的员工的数据。如果员工有外部贷款，我们需要显示贷款明细。（DISPLAY_FLAG =＆＃39; Y＆＃39;）如果是组织提供的内部贷款，它将在Employee_loan_detail中，并标记为DISPLAY_FLAG =＆＃34; N＆＃34;

EMPLOYEE_LOAN_DETAIL
<table>
<tr><th>EMPLOYEE_ID</th><th>LOAD_ID</th><th>DISPLAY_FLAG</th><tr>
<tr><td>123</td><td>50</td><td>Y</td></tr>
<tr><td>456</td><td>51</td><td>N</td></tr>
<table>

emp_dept_rel 
<table>
<tr><th>EMP_ID</th><th>DEPT_ID</th><tr>
<tr><td>123</td><td>987</td></tr>
<tr><td>456</td><td>987</td></tr>
<tr><td>789</td><td>987</td></tr>
<table>

employee_manual 
<table>
<tr><th>EMPLOYEE_ID</th><th>LOAD_ID</th><th>DEPT_ID</th><tr>
<tr><td>123</td><td>50</td><td>987</td></tr>
<tr><td>456</td><td>51</td><td>987</td></tr>
<tr><td>789</td><td></td><td>987</td></tr>
<table>

Answer 1

试试这个：

SELECT
  EDR.DEPT_ID             AS   DEPT_ID,
  EMP.EMPLOYEE_ID         AS   EMPLOYEE_ID,
  ELD.LOAN_ID             AS   LOAN_ID,
  ELD.LOAN_STATUS         AS   LOAN_STATUS

FROM        EMPLOYEE_MANUAL EMP

INNER JOIN  EMP_DEPT_REL EDR
            ON EDR.EMPLOYEE_ID = EMP.EMPLOYEE_ID

LEFT OUTER JOIN EMPLOYEE_LOAN_DETAIL ELD  
            ON ELD.LOAN_ID   = EMP.LOAN_ID

WHERE EDR.DEPT_ID IN ('123') AND ELD.DISPLAY_FLAG       = 'Y';

使用WHERE和AND

1 个答案: