在PowerBuilder中动态添加条件

Question

I'm new to Power Builder code. I need to add a condition to Join dynamically. Any help is appreciated. Thanks a lot

String szdSQL, psql, sznewsql

   szdSQL = "Select A, B, C, D 
   FROM  sy_staging
   LEFT OUTER JOIN fd_M
   ON sy_staging.id = fd_M.id
   LEFT OUTER JOIN gl_M
   ON sy_staging.id= gl_M.id AND sy_staging.version = gl_M.version
   WHERE sy_staging.year = :lyear AND
   sy_staging.location = :llocation "

psql = "Upper(fd_M.code3) = 'SMM' " In my new query I want to add the condition present in this string variable (psql) in the join as below

sznewsql = " "Select A, B, C, D 
   FROM  sy_staging
   LEFT OUTER JOIN fd_M
   ON sy_staging.id = fd_M.id AND Upper(fd_M.code3) = 'SMM'
   LEFT OUTER JOIN gl_M
   ON sy_staging.id= gl_M.id AND sy_staging.version = gl_M.version
   WHERE sy_staging.year = :lyear AND
   sy_staging.location = :llocation "

Answer 1

Hmmm... That's an interesting case - adding a parameter to the ON clause, not the WHERE clause.

I'd use a datawindow, for sure (because I always do), but I'm not sure you can do that in graphic mode. You might have to convert to syntax, and then just add the new parameter into the ON clause with the ":" syntax.

LEFT OUTER JOIN fd_M  
ON sy_staging.id = fd_M.id AND Upper(fd_M.code3) = :newStringParm  
LEFT OUTER JOIN gl_M
...

and then your PowerScript would be
dw_1.retrieve( lYear, lLocation, psql )

-Paul Horan-

Answer 2

如果只使用这两个不同的SQL，则可以只创建两个单独的数据窗口，然后动态交换出datawindow控件中使用的窗口。