ABAP Select data from SAP table FKKBALCHECK_ALV into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKBALCHECK_ALV
*  INTO TABLE @DATA(IT_FKKBALCHECK_ALV2).
*--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_FKKBALCHECK_ALV INDEX 1 INTO DATA(WA_FKKBALCHECK_ALV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKBALCHECK_ALV>-OPBEL = 1.
<FKKBALCHECK_ALV>-FIKEY = 1.
<FKKBALCHECK_ALV>-BUKRS = 1.
<FKKBALCHECK_ALV>-WAERS = 1.
<FKKBALCHECK_ALV>-BETRW = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKBALCHECK_ALV-HWAER, sy-vline,
  WA_FKKBALCHECK_ALV-BETRH, sy-vline,
  WA_FKKBALCHECK_ALV-HWAE2, sy-vline,
  WA_FKKBALCHECK_ALV-BETR2, sy-vline,
  WA_FKKBALCHECK_ALV-HWAE3, sy-vline,
  WA_FKKBALCHECK_ALV-BETR3, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKBALCHECK_ALV 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_FKKBALCHECK_ALV 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_FKKBALCHECK_ALV INTO WA_FKKBALCHECK_ALV.


*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.

*Conversion exit ALPHA, internal->external for field OPBEL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKBALCHECK_ALV-OPBEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKBALCHECK_ALV-OPBEL.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

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

TYPES: BEGIN OF T_FKKBALCHECK_ALV_STR, 
OPBEL TYPE STRING,
FIKEY TYPE STRING,
BUKRS TYPE STRING,
WAERS TYPE STRING,
BETRW TYPE STRING,
HWAER TYPE STRING,
BETRH TYPE STRING,
HWAE2 TYPE STRING,
BETR2 TYPE STRING,
HWAE3 TYPE STRING,
BETR3 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKBALCHECK_ALV_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_FKKBALCHECK_ALV_STR-OPBEL sy-vline 
WA_FKKBALCHECK_ALV_STR-FIKEY sy-vline 
WA_FKKBALCHECK_ALV_STR-BUKRS sy-vline 
WA_FKKBALCHECK_ALV_STR-WAERS sy-vline 
WA_FKKBALCHECK_ALV_STR-BETRW sy-vline 
WA_FKKBALCHECK_ALV_STR-HWAER sy-vline 
WA_FKKBALCHECK_ALV_STR-BETRH sy-vline 
WA_FKKBALCHECK_ALV_STR-HWAE2 sy-vline 
WA_FKKBALCHECK_ALV_STR-BETR2 sy-vline 
WA_FKKBALCHECK_ALV_STR-HWAE3 sy-vline 
WA_FKKBALCHECK_ALV_STR-BETR3 sy-vline      INTO ld_text SEPARATED BY SPACE.

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