ABAP Select data from SAP table V1FKKOP_ERW into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP V1FKKOP_ERW 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 V1FKKOP_ERW. 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 V1FKKOP_ERW 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_V1FKKOP_ERW TYPE STANDARD TABLE OF V1FKKOP_ERW,
      WA_V1FKKOP_ERW TYPE V1FKKOP_ERW,
      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: <V1FKKOP_ERW> TYPE V1FKKOP_ERW.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_V1FKKOP_ERW.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM V1FKKOP_ERW
  INTO TABLE IT_V1FKKOP_ERW.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V1FKKOP_ERW
*  INTO TABLE @DATA(IT_V1FKKOP_ERW2).
*--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_V1FKKOP_ERW INDEX 1 INTO DATA(WA_V1FKKOP_ERW2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_V1FKKOP_ERW ASSIGNING <V1FKKOP_ERW>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V1FKKOP_ERW>-MANDT = 1.
<V1FKKOP_ERW>-OPBEL = 1.
<V1FKKOP_ERW>-OPUPW = 1.
<V1FKKOP_ERW>-OPUPK = 1.
<V1FKKOP_ERW>-OPUPZ = 1.

ENDLOOP.

LOOP AT IT_V1FKKOP_ERW INTO WA_V1FKKOP_ERW.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V1FKKOP_ERW-AUGBL, sy-vline,
  WA_V1FKKOP_ERW-AUGDT, sy-vline,
  WA_V1FKKOP_ERW-AUGBD, sy-vline,
  WA_V1FKKOP_ERW-AUGRD, sy-vline,
  WA_V1FKKOP_ERW-AUGST, sy-vline,
  WA_V1FKKOP_ERW-AUGWA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V1FKKOP_ERW 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_V1FKKOP_ERW 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_V1FKKOP_ERW INTO WA_V1FKKOP_ERW.


*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_V1FKKOP_ERW-OPBEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V1FKKOP_ERW-OPBEL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUGBL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V1FKKOP_ERW-AUGBL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V1FKKOP_ERW-AUGBL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUGBL_ORI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V1FKKOP_ERW-AUGBL_ORI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V1FKKOP_ERW-AUGBL_ORI.
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_V1FKKOP_ERW_STR, 
MANDT TYPE STRING,
OPBEL TYPE STRING,
OPUPW TYPE STRING,
OPUPK TYPE STRING,
OPUPZ TYPE STRING,
AUGBL TYPE STRING,
AUGDT TYPE STRING,
AUGBD TYPE STRING,
AUGRD TYPE STRING,
AUGST TYPE STRING,
AUGWA TYPE STRING,
AUGBT TYPE STRING,
AUGBS TYPE STRING,
AUGSK TYPE STRING,
AUGVD TYPE STRING,
AUGOB TYPE STRING,
QBSHB TYPE STRING,
QSZNR TYPE STRING,
XRAGL TYPE STRING,
XPYOR TYPE STRING,
NEGBU TYPE STRING,
RDSTA TYPE STRING,
PASTA TYPE STRING,
CPUDT_ST TYPE STRING,
CPUTM_ST TYPE STRING,
RCSTA TYPE STRING,
BETRW_ORI TYPE STRING,
AUGBL_ORI TYPE STRING,
WHGRP_ORI TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V1FKKOP_ERW_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_V1FKKOP_ERW_STR-MANDT sy-vline 
WA_V1FKKOP_ERW_STR-OPBEL sy-vline 
WA_V1FKKOP_ERW_STR-OPUPW sy-vline 
WA_V1FKKOP_ERW_STR-OPUPK sy-vline 
WA_V1FKKOP_ERW_STR-OPUPZ sy-vline 
WA_V1FKKOP_ERW_STR-AUGBL sy-vline 
WA_V1FKKOP_ERW_STR-AUGDT sy-vline 
WA_V1FKKOP_ERW_STR-AUGBD sy-vline 
WA_V1FKKOP_ERW_STR-AUGRD sy-vline 
WA_V1FKKOP_ERW_STR-AUGST sy-vline 
WA_V1FKKOP_ERW_STR-AUGWA sy-vline 
WA_V1FKKOP_ERW_STR-AUGBT sy-vline 
WA_V1FKKOP_ERW_STR-AUGBS sy-vline 
WA_V1FKKOP_ERW_STR-AUGSK sy-vline 
WA_V1FKKOP_ERW_STR-AUGVD sy-vline 
WA_V1FKKOP_ERW_STR-AUGOB sy-vline 
WA_V1FKKOP_ERW_STR-QBSHB sy-vline 
WA_V1FKKOP_ERW_STR-QSZNR sy-vline 
WA_V1FKKOP_ERW_STR-XRAGL sy-vline 
WA_V1FKKOP_ERW_STR-XPYOR sy-vline 
WA_V1FKKOP_ERW_STR-NEGBU sy-vline 
WA_V1FKKOP_ERW_STR-RDSTA sy-vline 
WA_V1FKKOP_ERW_STR-PASTA sy-vline 
WA_V1FKKOP_ERW_STR-CPUDT_ST sy-vline 
WA_V1FKKOP_ERW_STR-CPUTM_ST sy-vline 
WA_V1FKKOP_ERW_STR-RCSTA sy-vline 
WA_V1FKKOP_ERW_STR-BETRW_ORI sy-vline 
WA_V1FKKOP_ERW_STR-AUGBL_ORI sy-vline 
WA_V1FKKOP_ERW_STR-WHGRP_ORI sy-vline      INTO ld_text SEPARATED BY SPACE.

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