Itab into Itab into Itab

" pour la selection
TYPES : BEGIN OF ts_tblflddup,
          tabname   TYPE tabname,
          domname   TYPE domname,
          fieldname TYPE fieldname,
          oldvalue  TYPE string,
          newvalue  TYPE string,
        END OF ts_tblflddup,
        tt_tblflddup TYPE STANDARD TABLE OF ts_tblflddup.

" pour le merging avant selection dans tables
TYPES : BEGIN OF ts_clval,
          clause_value TYPE string,
        END OF ts_clval,
        tt_clval TYPE SORTED TABLE OF ts_clval WITH
        UNIQUE KEY clause_value.

TYPES : BEGIN OF ts_fldmrg,
          fieldname TYPE fieldname,
          t_clval   TYPE tt_clval,
        END OF ts_fldmrg,
        tt_fldmrg TYPE SORTED TABLE OF ts_fldmrg WITH UNIQUE KEY
        fieldname.

TYPES : BEGIN OF ts_tblmrgdup,
          tabname TYPE tabname,
          t_key   TYPE tt_fldmrg,
          t_fld   TYPE tt_fldmrg,
        END OF ts_tblmrgdup,
        tt_tblmrgdup TYPE SORTED TABLE OF ts_tblmrgdup WITH
        UNIQUE KEY tabname.



FORM merge_tblflddup
  USING
        it_tblkey TYPE tt_tblflddup
        it_tblfld TYPE tt_tblflddup
  CHANGING
        et_tblmrg TYPE tt_tblmrgdup
        ct_protocole TYPE tt_protocole.

  DATA : ls_tblkey TYPE ts_tblflddup,
         ls_tblfld TYPE ts_tblflddup.
  DATA : ls_tblmrg TYPE ts_tblmrgdup.
  DATA : ls_key TYPE ts_fldmrg,
         ls_fld TYPE ts_fldmrg.
  DATA : ls_clval TYPE ts_clval.
  DATA : lv_index  TYPE i,
         lv_index2 TYPE i,
         lv_index3 TYPE i.

  LOOP AT it_tblkey INTO ls_tblkey.
    READ TABLE et_tblmrg WITH TABLE KEY tabname = ls_tblkey-tabname
    INTO ls_tblmrg.
    lv_index = sy-tabix.

    IF sy-subrc EQ 0. "l'entrée existe on ajoute le domaine
      " sauf si il est déjà présent
      " dans ce cas on ajoute la valeurs sauf si elle est déjà
      " présente
      READ TABLE ls_tblmrg-t_key WITH TABLE KEY
      fieldname = ls_tblkey-fieldname INTO ls_key.
      lv_index2 = sy-tabix.
      IF sy-subrc EQ 0. " l'entrée existe on regarde si la valeur existe
        READ TABLE ls_key-t_clval WITH TABLE KEY
        clause_value = ls_tblkey-oldvalue TRANSPORTING NO FIELDS.
        lv_index3 = sy-tabix.
        " notre selection se fera sur  l'ancienne valeur !
        IF sy-subrc NE 0. " si pasd'entrée on insére
          CLEAR ls_clval.

          ls_clval-clause_value = ls_tblkey-oldvalue.

          INSERT ls_clval INTO ls_key-t_clval INDEX lv_index3.
          MODIFY ls_tblmrg-t_key FROM ls_key INDEX lv_index2.
          MODIFY et_tblmrg FROM ls_tblmrg INDEX lv_index.
        ENDIF.
      ELSE.
        CLEAR ls_key.
        CLEAR ls_clval.
        " on insére // aucun entrée val
        ls_key-fieldname = ls_tblkey-fieldname.
        ls_clval-clause_value = ls_tblkey-oldvalue.

        INSERT ls_clval INTO ls_key-t_clval INDEX 1.
        INSERT ls_key INTO ls_tblmrg-t_key INDEX lv_index2.
        MODIFY et_tblmrg FROM ls_tblmrg INDEX lv_index.
      ENDIF.
    ELSE.
      CLEAR ls_tblmrg.
      CLEAR ls_key.
      CLEAR ls_clval.

      ls_clval-clause_value = ls_tblkey-oldvalue.
      ls_key-fieldname = ls_tblkey-fieldname.
      ls_tblmrg-tabname = ls_tblkey-tabname.
      INSERT ls_clval INTO ls_key-t_clval INDEX 1.
      INSERT ls_key INTO ls_tblmrg-t_key INDEX 1.
      INSERT ls_tblmrg INTO et_tblmrg INDEX lv_index.
    ENDIF.
  ENDLOOP.

* IDEM pour les FLD

  LOOP AT it_tblfld INTO ls_tblfld.
    READ TABLE et_tblmrg WITH TABLE KEY tabname = ls_tblfld-tabname
    INTO ls_tblmrg.
    lv_index = sy-tabix.
    " TODO L'entrée est obligé d'existé sinon protocole
    IF sy-subrc EQ 0.
      READ TABLE ls_tblmrg-t_fld WITH TABLE KEY
      fieldname = ls_tblfld-fieldname INTO ls_fld.
      lv_index2 = sy-tabix.
      IF sy-subrc EQ 0. " l'entrée existe on regarde si la valeur existe
        READ TABLE ls_fld-t_clval WITH TABLE KEY
        clause_value = ls_tblfld-oldvalue TRANSPORTING NO FIELDS.
        lv_index3 = sy-tabix.
        " notre selection se fera sur  l'ancienne valeur !
        IF sy-subrc NE 0. " si pasd'entrée on insére
          CLEAR ls_clval.

          ls_clval-clause_value = ls_tblfld-oldvalue.

          INSERT ls_clval INTO ls_fld-t_clval INDEX lv_index3.
          MODIFY ls_tblmrg-t_fld FROM ls_fld INDEX lv_index2.
          MODIFY et_tblmrg FROM ls_tblmrg INDEX lv_index.
        ENDIF.
      ELSE.
        CLEAR ls_fld.
        CLEAR ls_clval.
        " on insére // aucun entrée val
        ls_fld-fieldname = ls_tblfld-fieldname.
        ls_clval-clause_value = ls_tblfld-oldvalue.

        INSERT ls_clval INTO ls_fld-t_clval INDEX 1.
        INSERT ls_fld INTO ls_tblmrg-t_fld INDEX lv_index2.
        MODIFY et_tblmrg FROM ls_tblmrg INDEX lv_index.
      ENDIF.
    ELSE.
      CLEAR ls_tblmrg.
      CLEAR ls_fld.
      CLEAR ls_clval.

      ls_clval-clause_value = ls_tblfld-oldvalue.
      ls_fld-fieldname = ls_tblfld-fieldname.
      ls_tblmrg-tabname = ls_tblfld-tabname.
      INSERT ls_clval INTO ls_fld-t_clval INDEX 1.
      INSERT ls_fld INTO ls_tblmrg-t_fld INDEX 1.
      INSERT ls_tblmrg INTO et_tblmrg INDEX lv_index.
    ENDIF.
  ENDLOOP.
***
**********
*  TABLE * FLD * KEY *
*        * FIELDNAME VAL
*                      X
*                      Y
*        *
*********
ENDFORM.