ABAP Select data from SAP table FKKOP_CHGL into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKOP_CHGL
*  INTO TABLE @DATA(IT_FKKOP_CHGL2).
*--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_FKKOP_CHGL INDEX 1 INTO DATA(WA_FKKOP_CHGL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKOP_CHGL>-SPZA1 = 1.
<FKKOP_CHGL>-FD1ZA = 1.
<FKKOP_CHGL>-TD1ZA = 1.
<FKKOP_CHGL>-SPZA2 = 1.
<FKKOP_CHGL>-FD2ZA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKOP_CHGL-TD2ZA, sy-vline,
  WA_FKKOP_CHGL-MNSP1, sy-vline,
  WA_FKKOP_CHGL-FD1MA, sy-vline,
  WA_FKKOP_CHGL-TD1MA, sy-vline,
  WA_FKKOP_CHGL-MNSP2, sy-vline,
  WA_FKKOP_CHGL-FD2MA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKOP_CHGL 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_FKKOP_CHGL 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_FKKOP_CHGL INTO WA_FKKOP_CHGL.


*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_FKKOP_CHGL_STR, 
SPZA1 TYPE STRING,
FD1ZA TYPE STRING,
TD1ZA TYPE STRING,
SPZA2 TYPE STRING,
FD2ZA TYPE STRING,
TD2ZA TYPE STRING,
MNSP1 TYPE STRING,
FD1MA TYPE STRING,
TD1MA TYPE STRING,
MNSP2 TYPE STRING,
FD2MA TYPE STRING,
TD2MA TYPE STRING,
SPRZ1 TYPE STRING,
FD1ZI TYPE STRING,
TD1ZI TYPE STRING,
SPRZ2 TYPE STRING,
FD2ZI TYPE STRING,
TD2ZI TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKOP_CHGL_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_FKKOP_CHGL_STR-SPZA1 sy-vline 
WA_FKKOP_CHGL_STR-FD1ZA sy-vline 
WA_FKKOP_CHGL_STR-TD1ZA sy-vline 
WA_FKKOP_CHGL_STR-SPZA2 sy-vline 
WA_FKKOP_CHGL_STR-FD2ZA sy-vline 
WA_FKKOP_CHGL_STR-TD2ZA sy-vline 
WA_FKKOP_CHGL_STR-MNSP1 sy-vline 
WA_FKKOP_CHGL_STR-FD1MA sy-vline 
WA_FKKOP_CHGL_STR-TD1MA sy-vline 
WA_FKKOP_CHGL_STR-MNSP2 sy-vline 
WA_FKKOP_CHGL_STR-FD2MA sy-vline 
WA_FKKOP_CHGL_STR-TD2MA sy-vline 
WA_FKKOP_CHGL_STR-SPRZ1 sy-vline 
WA_FKKOP_CHGL_STR-FD1ZI sy-vline 
WA_FKKOP_CHGL_STR-TD1ZI sy-vline 
WA_FKKOP_CHGL_STR-SPRZ2 sy-vline 
WA_FKKOP_CHGL_STR-FD2ZI sy-vline 
WA_FKKOP_CHGL_STR-TD2ZI sy-vline      INTO ld_text SEPARATED BY SPACE.

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