Dynamic Select statements (Joins)

Question

Hi friends the following is the Source code in my FUNCTION MODULE and this i have few parameters in my report
MARKET
MEMBER
EFFECTIVE DATE
STATUS
COUNTRY
ADMISSION TYPE
I need the output from Different Select options (PARAMETER OPTIONS) from the User point of view..this is Just one market's (XETRA) selections .. I have 13 markets... Kindly anyone help me with the similar output I need a dynamic selection ...
SAMPLE or EXAMPLE CODE appreciated...
CASE iv_market.
WHEN lc_xtra_market.                                  
      lv_table = 'ZTGP_MEMBER_XTRA'.
IF iv_member_id IS INITIAL AND iv_country IS INITIAL AND iv_adm_type IS INITIAL.
SELECT ztgp_member_xtra~xetra_id
               ztgp_member_xtra~admission
               ztgp_member_xtra~partner
               ztgp_member_xtra~status
               ztgp_member_xtra~adm_type
               ztgp_member_xtra~object_id
               ztgp_member_xtra~addrnumber
               ztgp_member_xtra~beg_dat
               adrc~country
INTO (lt_member-member_id, lt_member-admission, lt_member-partner, lt_member-status, lt_member-adm_type,
lt_member-object_id, lt_member-addrnumber, lt_member-beg_dat,lt_member-country)
FROM ztgp_member_xtra JOIN adrc ON ztgp_member_xtraaddrnumber = adrcaddrnumber WHERE ztgp_member_xtrastatus EQ iv_status AND                ztgp_member_xtrabeg_dat LE iv_date_effective AND
ztgp_member_xtra~end_dat GE iv_date_effective.
APPEND lt_member.
ENDSELECT.
ELSEIF NOT iv_member_id IS INITIAL AND iv_country IS INITIAL AND iv_adm_type IS INITIAL.
SELECT  ztgp_member_xtra~xetra_id
        ztgp_member_xtra~admission
        ztgp_member_xtra~partner
        ztgp_member_xtra~status
        ztgp_member_xtra~adm_type
        ztgp_member_xtra~object_id
        ztgp_member_xtra~addrnumber
        ztgp_member_xtra~beg_dat
        adrc~country
INTO (lt_member-member_id, lt_member-admission, lt_member-partner, lt_member-status, lt_member-adm_type,
lt_member-object_id, lt_member-addrnumber, lt_member-beg_dat,lt_member-country)
FROM ztgp_member_xtra JOIN adrc ON ztgp_member_xtraaddrnumber = adrcaddrnumber
WHERE ztgp_member_xtra~xetra_id EQ iv_member_id AND
      ztgp_member_xtra~status EQ iv_status AND
      ztgp_member_xtra~beg_dat LE iv_date_effective AND
      ztgp_member_xtra~end_dat GE iv_date_effective.
     APPEND lt_member.
     ENDSELECT.
ELSEIF NOT iv_member_id IS INITIAL AND NOT iv_country IS INITIAL AND iv_adm_type IS INITIAL.
SELECT  ztgp_member_xtra~xetra_id
        ztgp_member_xtra~admission
        ztgp_member_xtra~partner
        ztgp_member_xtra~status
        ztgp_member_xtra~adm_type
        ztgp_member_xtra~object_id
        ztgp_member_xtra~addrnumber
        ztgp_member_xtra~beg_dat
        adrc~country
INTO (lt_member-member_id, lt_member-admission, lt_member-partner, lt_member-status, lt_member-adm_type,
lt_member-object_id, lt_member-addrnumber, lt_member-beg_dat,lt_member-country)
FROM ztgp_member_xtra JOIN adrc ON ztgp_member_xtraaddrnumber = adrcaddrnumber
WHERE ztgp_member_xtra~xetra_id EQ iv_member_id AND
adrc~country EQ iv_country AND
ztgp_member_xtra~status EQ iv_status AND
ztgp_member_xtra~beg_dat LE iv_date_effective AND
ztgp_member_xtra~end_dat GE iv_date_effective.
APPEND lt_member.
ENDSELECT.
ELSEIF iv_member_id IS INITIAL AND NOT iv_country IS INITIAL AND iv_adm_type IS INITIAL.
SELECT  ztgp_member_xtra~xetra_id
       ztgp_member_xtra~admission
       ztgp_member_xtra~partner
       ztgp_member_xtra~status
       ztgp_member_xtra~adm_type
       ztgp_member_xtra~object_id
      ztgp_member_xtra~addrnumber
      ztgp_member_xtra~beg_dat
adrc~country
INTO (lt_member-member_id, lt_member-admission, lt_member-partner, lt_member-status, lt_member-adm_type,
lt_member-object_id, lt_member-addrnumber, lt_member-beg_dat,lt_member-country)
FROM ztgp_member_xtra JOIN adrc ON ztgp_member_xtraaddrnumber = adrcaddrnumber
WHERE adrc~country EQ iv_country AND
ztgp_member_xtra~status EQ iv_status AND
ztgp_member_xtra~beg_dat LE iv_date_effective AND
ztgp_member_xtra~end_dat GE iv_date_effective.
APPEND lt_member.
ENDSELECT.
ELSEIF iv_member_id IS INITIAL AND iv_country IS INITIAL AND NOT iv_adm_type IS INITIAL.
SELECT  ztgp_member_xtra~xetra_id
        ztgp_member_xtra~admission
       ztgp_member_xtra~partner
       ztgp_member_xtra~status
    ztgp_member_xtra~adm_type
                ztgp_member_xtra~object_id
                ztgp_member_xtra~addrnumber
                ztgp_member_xtra~beg_dat
                adrc~country
INTO (lt_member-member_id, lt_member-admission, lt_member-partner, lt_member-status, lt_member-adm_type,
lt_member-object_id, lt_member-addrnumber, lt_member-beg_dat,lt_member-country)
FROM ztgp_member_xtra JOIN adrc ON ztgp_member_xtraaddrnumber = adrcaddrnumber
WHERE ztgp_member_xtra~adm_type EQ iv_adm_type AND
ztgp_member_xtra~status EQ iv_status AND
ztgp_member_xtra~beg_dat LE iv_date_effective AND
ztgp_member_xtra~end_dat GE iv_date_effective.
APPEND lt_member.
ENDSELECT.
ENDIF.
WHEN lc_repo_market.
WHEN lc_eurex_market.
When lc_fwb_market.
and so on... 13 markets..
      ENDIF.
IF sy-subrc NE 0.
      ENDIF.
    WHEN OTHERS.
      EXIT.
  ENDCASE.

Answer 1

In your case your internal tables seems to have constant and same structure so it can be defined statically.
lv_table &  lv_where_cond are variables.
SELECT F1 F2 FROM (lv_table)
             INTO CORRESPONDING FIELDS OF TABLE  itab
            WHERE (lv_where_cond).