如何为 java 字符串查询中的 DB2 列创建别名？

Question

Here is my query, In DB Visualizer it works fine:

String query ="SELECT  emp_id AS Class_ID \n" +
                "       ,emp_name as Name \n" +
                "       ,emp_salary as Salary\n" +
                "FROM   Employee\n"

In java, it gives this error:

com.ibm.db2.jcc.am.SqlException: [jcc][10150][10300][4.26.14] Invalid parameter: Unknown column name Class_ID. ERRORCODE=-4460, SQLSTATE=null

Answer 1

You don't need double quotes to delimit alias. So just use:

String query ="SELECT ID AS Class_ID FROM Employee";