ABAP Select data from SAP table FICOS_LIST_CHDOC into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FICOS_LIST_CHDOC table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to FICOS_LIST_CHDOC. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the FICOS_LIST_CHDOC table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_FICOS_LIST_CHDOC TYPE STANDARD TABLE OF FICOS_LIST_CHDOC,
      WA_FICOS_LIST_CHDOC TYPE FICOS_LIST_CHDOC,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <FICOS_LIST_CHDOC> TYPE FICOS_LIST_CHDOC.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_FICOS_LIST_CHDOC.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM FICOS_LIST_CHDOC
  INTO TABLE IT_FICOS_LIST_CHDOC.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FICOS_LIST_CHDOC
*  INTO TABLE @DATA(IT_FICOS_LIST_CHDOC2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_FICOS_LIST_CHDOC INDEX 1 INTO DATA(WA_FICOS_LIST_CHDOC2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_FICOS_LIST_CHDOC ASSIGNING <FICOS_LIST_CHDOC>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FICOS_LIST_CHDOC>-I_EXTKEY = 1.
<FICOS_LIST_CHDOC>-I_POSNO = 1.
<FICOS_LIST_CHDOC>-O_LISTTYPE = 1.
<FICOS_LIST_CHDOC>-O_CONDTYPE = 1.
<FICOS_LIST_CHDOC>-C_AMT = 1.

ENDLOOP.

LOOP AT IT_FICOS_LIST_CHDOC INTO WA_FICOS_LIST_CHDOC.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FICOS_LIST_CHDOC-F_INCREM, sy-vline,
  WA_FICOS_LIST_CHDOC-I_MERGE_ORDER, sy-vline,
  WA_FICOS_LIST_CHDOC-F_INDCOND, sy-vline,
  WA_FICOS_LIST_CHDOC-O_DIFFCATG, sy-vline,
  WA_FICOS_LIST_CHDOC-I_DIFFVALUE, sy-vline,
  WA_FICOS_LIST_CHDOC-O_DIFFCATG_1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FICOS_LIST_CHDOC you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_FICOS_LIST_CHDOC TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_FICOS_LIST_CHDOC INTO WA_FICOS_LIST_CHDOC.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_FICOS_LIST_CHDOC_STR, 
I_EXTKEY TYPE STRING,
I_POSNO TYPE STRING,
O_LISTTYPE TYPE STRING,
O_CONDTYPE TYPE STRING,
C_AMT TYPE STRING,
F_INCREM TYPE STRING,
I_MERGE_ORDER TYPE STRING,
F_INDCOND TYPE STRING,
O_DIFFCATG TYPE STRING,
I_DIFFVALUE TYPE STRING,
O_DIFFCATG_1 TYPE STRING,
I_DIFFVALUE_1 TYPE STRING,
O_DIFFCATG_2 TYPE STRING,
I_DIFFVALUE_2 TYPE STRING,
O_DIFFCATG_3 TYPE STRING,
I_DIFFVALUE_3 TYPE STRING,
O_DIFFCATG_4 TYPE STRING,
I_DIFFVALUE_4 TYPE STRING,
O_DATECATG TYPE STRING,
O_AMTCATG TYPE STRING,
D_VALIDFROM TYPE STRING,
UDATE TYPE STRING,
UTIME TYPE STRING,
USERNAME TYPE STRING,
TABLENAME TYPE STRING,
FIELDNAME TYPE STRING,
FIELDVALUE_NEW TYPE STRING,
FIELDVALUE_OLD TYPE STRING,
CHNGIND TYPE STRING,
F_INCONSISTENT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FICOS_LIST_CHDOC_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_FICOS_LIST_CHDOC_STR-I_EXTKEY sy-vline 
WA_FICOS_LIST_CHDOC_STR-I_POSNO sy-vline 
WA_FICOS_LIST_CHDOC_STR-O_LISTTYPE sy-vline 
WA_FICOS_LIST_CHDOC_STR-O_CONDTYPE sy-vline 
WA_FICOS_LIST_CHDOC_STR-C_AMT sy-vline 
WA_FICOS_LIST_CHDOC_STR-F_INCREM sy-vline 
WA_FICOS_LIST_CHDOC_STR-I_MERGE_ORDER sy-vline 
WA_FICOS_LIST_CHDOC_STR-F_INDCOND sy-vline 
WA_FICOS_LIST_CHDOC_STR-O_DIFFCATG sy-vline 
WA_FICOS_LIST_CHDOC_STR-I_DIFFVALUE sy-vline 
WA_FICOS_LIST_CHDOC_STR-O_DIFFCATG_1 sy-vline 
WA_FICOS_LIST_CHDOC_STR-I_DIFFVALUE_1 sy-vline 
WA_FICOS_LIST_CHDOC_STR-O_DIFFCATG_2 sy-vline 
WA_FICOS_LIST_CHDOC_STR-I_DIFFVALUE_2 sy-vline 
WA_FICOS_LIST_CHDOC_STR-O_DIFFCATG_3 sy-vline 
WA_FICOS_LIST_CHDOC_STR-I_DIFFVALUE_3 sy-vline 
WA_FICOS_LIST_CHDOC_STR-O_DIFFCATG_4 sy-vline 
WA_FICOS_LIST_CHDOC_STR-I_DIFFVALUE_4 sy-vline 
WA_FICOS_LIST_CHDOC_STR-O_DATECATG sy-vline 
WA_FICOS_LIST_CHDOC_STR-O_AMTCATG sy-vline 
WA_FICOS_LIST_CHDOC_STR-D_VALIDFROM sy-vline 
WA_FICOS_LIST_CHDOC_STR-UDATE sy-vline 
WA_FICOS_LIST_CHDOC_STR-UTIME sy-vline 
WA_FICOS_LIST_CHDOC_STR-USERNAME sy-vline 
WA_FICOS_LIST_CHDOC_STR-TABLENAME sy-vline 
WA_FICOS_LIST_CHDOC_STR-FIELDNAME sy-vline 
WA_FICOS_LIST_CHDOC_STR-FIELDVALUE_NEW sy-vline 
WA_FICOS_LIST_CHDOC_STR-FIELDVALUE_OLD sy-vline 
WA_FICOS_LIST_CHDOC_STR-CHNGIND sy-vline 
WA_FICOS_LIST_CHDOC_STR-F_INCONSISTENT sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.