Question

我需要根据IIB / WMB输入xml中给出的Job代码从两个表中检索数据。

SQL查询

SELECT D.DEPTNO,D.DNAME,D.LOC,E.EMPNO,E.ENAME,E.JOB,E.SAL FROM DEPT D JOIN EMP E on E.JOB ='MANAGER' OR E.JOB = 'CLERK'

ESQL查询

从输入xml获取JOB详细信息并将其分配给本地变量。

SET type1 = InputRoot.XMLNSC.Employee.Type[1];
SET type2 = InputRoot.XMLNSC.Employee.Type[2];

现在我需要将上述变量传递给我的ESQL查询。

SET Outputroot.XMLNSC.List[] = PASSTHRU('SELECT D.DEPTNO,D.DNAME,D.LOC,E.EMPNO,E.ENAME,E.JOB,E.SAL FROM Database.EMP AS E,Database.DEPT AS D where E.JOB =?' VALUES('type1','type2')) ;

但上述查询无效。

Answer 1

此查询中存在两个问题：

首先，您传递的是两个参数，但查询中只存在一个问号（？）。

其次，您传递的字符串值类似于'type1'，正确的是传递变量：

SET Outputroot.XMLNSC.List[] = PASSTHRU('SELECT D.DEPTNO,D.DNAME,D.LOC,E.EMPNO,E.ENAME,E.JOB,E.SAL FROM Database.EMP AS E,Database.DEPT AS D where E.JOB =?' VALUES(type1)) ;

Answer 2

以下是解决方案：

    DECLARE designation char;
       DECLARE designation1 char;
       DECLARE Query char;



      FOR source AS InputRoot.XMLNSC.Employees.Designation[]  DO
                IF(source = '') THEN
                    SET designation = 'Empty';
                ELSE        
                    SET designation = designation1 ||''''||UPPER(source)||'''';                     
                SET designation1 = ''''||UPPER(source)||''''||','||designation1 ;

            END IF;      


SET Query = '(SELECT D.DEPTNO,D.DNAME,D.LOC,E.EMPNO,E.ENAME,E.JOB,E.SAL FROM EMP AS E JOIN DEPT AS D on D.DEPTNO = E.DEPTNO where E.JOB in ('||designation||'))';

SET Outputroot.XMLNSC.List[] = PASSTHRU(Query);

Answer 3

在PASSTHRU语句后添加To Database.DBName，其中DBName是您的数据库名称

像这样：

SET Outputroot.XMLNSC.List[] = PASSTHRU('SELECT D.DEPTNO,D.DNAME,D.LOC,E.EMPNO,E.ENAME,E.JOB,E.SAL FROM Database.EMP AS E,Database.DEPT AS D where E.JOB =?' VALUES(type1)) To Database.DBName ;

Answer 4

passthru call应该是

SET Outputroot.XMLNSC.List[] = PASSTHRU('SELECT D.DEPTNO,D.DNAME,D.LOC,E.EMPNO,E.ENAME,E.JOB,E.SAL FROM Database.EMP AS E,Database.DEPT AS D where E.JOB in (? , ?)', type1,type2) ;

OR

SET Outputroot.XMLNSC.List[] = PASSTHRU('SELECT D.DEPTNO,D.DNAME,D.LOC,E.EMPNO,E.ENAME,E.JOB,E.SAL FROM Database.EMP AS E,Database.DEPT AS D where E.JOB=? or E.JOB=?)', type1,type2) ;

IIB：将局部变量传递给ESQL select语句

4 个答案: