Table name decided at runtime - How to do a select?

Hi,
Searching these forums I found how to do a select * from where the table name is decided at runtime. You use paranthesis on the variable containing the table name.
However, I still get syntax error I can't solve and need some help.
This syntax doesnt work, could you help me find out what is the problem?
SELECT tab1~field1 tab2~field2
FROM ( (dynamic_tab_name1) AS tab1 INNER JOIN
(dynamic_tab_name2) AS tab2 ON tab1~someIndex = tab2~someIndex )
dynamic_tab_name1 and dynamic_tab_name2 are defined as two strings where I concatenate the table prefix name with the system client number.
The syntax works if i replace the dynamic_tab_name1 and dynamic_tab_name2 with hardcoded table names.
thanks & regards
Edited by: Baran Sölen on Feb 5, 2009 1:44 PM

Well you can generate your program dynamically in the following way.
But I never like to use the method.
append 'PROGRAM SUBPOOL no standard page heading.' to code.
append 'form dyn1.' to code.
append 'data: begin of i_tab occurs 0,' to code.
append '      kolnr like t682i-kolnr,' to code.
append '      gstxt like tmc1t-gstxt,' to code.
append '      kschl like t685-kschl,' to code.
append '      vkorg like komg-vkorg,' to code.
append '      vtweg like komg-vtweg,' to code.
append '      matkl like komg-matkl,' to code.
append '      matnr like komg-matnr,' to code.
append '      inco1 like komg-inco1,' to code.
append '      inco2 like komg-inco2,' to code.
append '      charg like komg-charg,' to code.
append '      vkbur like komg-vkbur,' to code.
append '      vkgrp like komg-vkgrp,' to code.
append '      zsales like komg-zsales,' to code.
append '      end of i_tab.' to code.
append 'data: begin of i_t682 occurs 0,' to code.
append '      kolnr like t682i-kolnr,' to code.
append '      kotabnr like t682i-kotabnr,' to code.
append '      end of i_t682.' to code.
data: v_table_name(16),
      v_condition_type_code(72),
      v_kolnr like t682i-kolnr.
concatenate 'kschl = ''' p_kschl '''.' into v_condition_type_code.
loop at i_t682.
    concatenate 'A' i_t682-kotabnr into v_table_name.
    append 'select * from' to code.
    append v_table_name to code.
    append 'appending corresponding fields of table i_tab' to code.
    append 'where kappl = ''V'' and' to code.
    append v_condition_type_code to code.
    append 'if sy-subrc = 0.' to code.
    append 'loop at i_tab where kolnr = '' ''.' to code.
    concatenate 'i_tab-kolnr = ' i_t682-kolnr '.' into code separated by space.
    append code. clear code.
    append 'i_tab-gstxt = ''Description will be put later''.' to code.
    append 'modify i_tab.' to code.
    append 'endloop.' to code.
    append 'endif.' to code.
endloop.
append 'export i_tab to memory id ''i_tab''.' to code.
append 'endform.' to code.
generate subroutine pool code
         name prog
         message msg
         line lin
         word wrd
         offset off.
*break-point.
if sy-subrc = 0.
perform dyn1 in program (prog).
endif.
import i_tab from memory id 'i_tab'.

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: non-database table and use record group to read from the base
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