ABAP Select data from SAP table AFX_FMOD_CHA into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP AFX_FMOD_CHA 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 AFX_FMOD_CHA. 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 AFX_FMOD_CHA 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_AFX_FMOD_CHA TYPE STANDARD TABLE OF AFX_FMOD_CHA,
      WA_AFX_FMOD_CHA TYPE AFX_FMOD_CHA,
      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: <AFX_FMOD_CHA> TYPE AFX_FMOD_CHA.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM AFX_FMOD_CHA
*  INTO TABLE @DATA(IT_AFX_FMOD_CHA2).
*--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_AFX_FMOD_CHA INDEX 1 INTO DATA(WA_AFX_FMOD_CHA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<AFX_FMOD_CHA>-FMOD_KEY = 1.
<AFX_FMOD_CHA>-PARNO = 1.
<AFX_FMOD_CHA>-PARAMETERCHA = 1.
<AFX_FMOD_CHA>-DBFIELDCHA = 1.
<AFX_FMOD_CHA>-DEFAULTCHA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_AFX_FMOD_CHA-TYPESCHA, sy-vline,
  WA_AFX_FMOD_CHA-OPTIONALCHA, sy-vline,
  WA_AFX_FMOD_CHA-REFERENCECHA, sy-vline,
  WA_AFX_FMOD_CHA-CHANGINGCHA, sy-vline,
  WA_AFX_FMOD_CHA-TYPCHA, sy-vline,
  WA_AFX_FMOD_CHA-CLASSCHA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_AFX_FMOD_CHA 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_AFX_FMOD_CHA 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_AFX_FMOD_CHA INTO WA_AFX_FMOD_CHA.


*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_AFX_FMOD_CHA_STR, 
FMOD_KEY TYPE STRING,
PARNO TYPE STRING,
PARAMETERCHA TYPE STRING,
DBFIELDCHA TYPE STRING,
DEFAULTCHA TYPE STRING,
TYPESCHA TYPE STRING,
OPTIONALCHA TYPE STRING,
REFERENCECHA TYPE STRING,
CHANGINGCHA TYPE STRING,
TYPCHA TYPE STRING,
CLASSCHA TYPE STRING,
REF_CLASSCHA TYPE STRING,
LINE_OFCHA TYPE STRING,
TABLE_OFCHA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_AFX_FMOD_CHA_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_AFX_FMOD_CHA_STR-FMOD_KEY sy-vline 
WA_AFX_FMOD_CHA_STR-PARNO sy-vline 
WA_AFX_FMOD_CHA_STR-PARAMETERCHA sy-vline 
WA_AFX_FMOD_CHA_STR-DBFIELDCHA sy-vline 
WA_AFX_FMOD_CHA_STR-DEFAULTCHA sy-vline 
WA_AFX_FMOD_CHA_STR-TYPESCHA sy-vline 
WA_AFX_FMOD_CHA_STR-OPTIONALCHA sy-vline 
WA_AFX_FMOD_CHA_STR-REFERENCECHA sy-vline 
WA_AFX_FMOD_CHA_STR-CHANGINGCHA sy-vline 
WA_AFX_FMOD_CHA_STR-TYPCHA sy-vline 
WA_AFX_FMOD_CHA_STR-CLASSCHA sy-vline 
WA_AFX_FMOD_CHA_STR-REF_CLASSCHA sy-vline 
WA_AFX_FMOD_CHA_STR-LINE_OFCHA sy-vline 
WA_AFX_FMOD_CHA_STR-TABLE_OFCHA sy-vline      INTO ld_text SEPARATED BY SPACE.

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