ABAP Select data from SAP table FKK_DOCCHECK_CL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKK_DOCCHECK_CL
*  INTO TABLE @DATA(IT_FKK_DOCCHECK_CL2).
*--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_FKK_DOCCHECK_CL INDEX 1 INTO DATA(WA_FKK_DOCCHECK_CL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKK_DOCCHECK_CL>-OPBEL = 1.
<FKK_DOCCHECK_CL>-OPUPW = 1.
<FKK_DOCCHECK_CL>-OPUPK = 1.
<FKK_DOCCHECK_CL>-OPUPZ = 1.
<FKK_DOCCHECK_CL>-BUKRS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKK_DOCCHECK_CL-LDGRP, sy-vline,
  WA_FKK_DOCCHECK_CL-STAKZ, sy-vline,
  WA_FKK_DOCCHECK_CL-BETRW, sy-vline,
  WA_FKK_DOCCHECK_CL-WAERS, sy-vline,
  WA_FKK_DOCCHECK_CL-BETRH, sy-vline,
  WA_FKK_DOCCHECK_CL-HWAER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKK_DOCCHECK_CL 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_FKK_DOCCHECK_CL 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_FKK_DOCCHECK_CL INTO WA_FKK_DOCCHECK_CL.


*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_FKK_DOCCHECK_CL-OPBEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKK_DOCCHECK_CL-OPBEL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUGBL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKK_DOCCHECK_CL-AUGBL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKK_DOCCHECK_CL-AUGBL.
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_FKK_DOCCHECK_CL_STR, 
OPBEL TYPE STRING,
OPUPW TYPE STRING,
OPUPK TYPE STRING,
OPUPZ TYPE STRING,
BUKRS TYPE STRING,
LDGRP TYPE STRING,
STAKZ TYPE STRING,
BETRW TYPE STRING,
WAERS TYPE STRING,
BETRH TYPE STRING,
HWAER TYPE STRING,
BETR2 TYPE STRING,
BETR3 TYPE STRING,
AUGBT TYPE STRING,
AUGWA TYPE STRING,
AUGBL TYPE STRING,
AUGBD TYPE STRING,
AUGDT TYPE STRING,
AUGOB TYPE STRING,
WHGRP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKK_DOCCHECK_CL_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_FKK_DOCCHECK_CL_STR-OPBEL sy-vline 
WA_FKK_DOCCHECK_CL_STR-OPUPW sy-vline 
WA_FKK_DOCCHECK_CL_STR-OPUPK sy-vline 
WA_FKK_DOCCHECK_CL_STR-OPUPZ sy-vline 
WA_FKK_DOCCHECK_CL_STR-BUKRS sy-vline 
WA_FKK_DOCCHECK_CL_STR-LDGRP sy-vline 
WA_FKK_DOCCHECK_CL_STR-STAKZ sy-vline 
WA_FKK_DOCCHECK_CL_STR-BETRW sy-vline 
WA_FKK_DOCCHECK_CL_STR-WAERS sy-vline 
WA_FKK_DOCCHECK_CL_STR-BETRH sy-vline 
WA_FKK_DOCCHECK_CL_STR-HWAER sy-vline 
WA_FKK_DOCCHECK_CL_STR-BETR2 sy-vline 
WA_FKK_DOCCHECK_CL_STR-BETR3 sy-vline 
WA_FKK_DOCCHECK_CL_STR-AUGBT sy-vline 
WA_FKK_DOCCHECK_CL_STR-AUGWA sy-vline 
WA_FKK_DOCCHECK_CL_STR-AUGBL sy-vline 
WA_FKK_DOCCHECK_CL_STR-AUGBD sy-vline 
WA_FKK_DOCCHECK_CL_STR-AUGDT sy-vline 
WA_FKK_DOCCHECK_CL_STR-AUGOB sy-vline 
WA_FKK_DOCCHECK_CL_STR-WHGRP sy-vline      INTO ld_text SEPARATED BY SPACE.

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