How to use sql variables in jdbc send adapter??

Question

Hi,
i wanna use a variable in the sql statement in the jdbc send adapter.
i know i can key sql statement in the "Query SQL Statement" in the jdbc send adapter.but i dont know how to use variables in the sql statement.
i mean, for example, the sql statement is "SELECT * FROM t_student WHERE READFLAG = 0", but now i wanna instead of "0"(the value of the READFLAG) using a variable.
and if i can use a variable to replace the "0"(the value of the READFLAG above sql statement), then how can i send a value to the variable??
request help in the regard.
thx in advance.
Brian

Answer 1

Hi,
Use the place holders to pass the data at runtime. Check the below structure for more details.
Hope this helps.
Thanks and Regards,
Kalpesh
<root>
  <stmt>
    <Student action="SQL_QUERY">
      <access> SELECT * FROM t_student WHERE READFLAG = '$FLAG$ </access>
      <key>
        <FLAG>0</FLAG>
      </key>
    </Student>
  </stmt>
</root>