ABAP Select data from SAP table GLPOS_C_GL_CT_SKB1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP GLPOS_C_GL_CT_SKB1 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 GLPOS_C_GL_CT_SKB1. 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 GLPOS_C_GL_CT_SKB1 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_GLPOS_C_GL_CT_SKB1 TYPE STANDARD TABLE OF GLPOS_C_GL_CT_SKB1,
      WA_GLPOS_C_GL_CT_SKB1 TYPE GLPOS_C_GL_CT_SKB1,
      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: <GLPOS_C_GL_CT_SKB1> TYPE GLPOS_C_GL_CT_SKB1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_GLPOS_C_GL_CT_SKB1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM GLPOS_C_GL_CT_SKB1
  INTO TABLE IT_GLPOS_C_GL_CT_SKB1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM GLPOS_C_GL_CT_SKB1
*  INTO TABLE @DATA(IT_GLPOS_C_GL_CT_SKB12).
*--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_GLPOS_C_GL_CT_SKB1 INDEX 1 INTO DATA(WA_GLPOS_C_GL_CT_SKB12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_GLPOS_C_GL_CT_SKB1 ASSIGNING <GLPOS_C_GL_CT_SKB1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<GLPOS_C_GL_CT_SKB1>-SKB1_BEGRU = 1.
<GLPOS_C_GL_CT_SKB1>-SKB1_BUSAB = 1.
<GLPOS_C_GL_CT_SKB1>-SKB1_DATLZ = 1.
<GLPOS_C_GL_CT_SKB1>-SKB1_ERDAT = 1.
<GLPOS_C_GL_CT_SKB1>-SKB1_ERNAM = 1.

ENDLOOP.

LOOP AT IT_GLPOS_C_GL_CT_SKB1 INTO WA_GLPOS_C_GL_CT_SKB1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_GLPOS_C_GL_CT_SKB1-SKB1_FDGRV, sy-vline,
  WA_GLPOS_C_GL_CT_SKB1-SKB1_FDLEV, sy-vline,
  WA_GLPOS_C_GL_CT_SKB1-SKB1_FIPLS, sy-vline,
  WA_GLPOS_C_GL_CT_SKB1-SKB1_FSTAG, sy-vline,
  WA_GLPOS_C_GL_CT_SKB1-SKB1_HBKID, sy-vline,
  WA_GLPOS_C_GL_CT_SKB1-SKB1_HKTID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_GLPOS_C_GL_CT_SKB1 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_GLPOS_C_GL_CT_SKB1 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_GLPOS_C_GL_CT_SKB1 INTO WA_GLPOS_C_GL_CT_SKB1.


*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 SKB1_FDGRV
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_GLPOS_C_GL_CT_SKB1-SKB1_FDGRV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GLPOS_C_GL_CT_SKB1-SKB1_FDGRV.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SKB1_ALTKT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_GLPOS_C_GL_CT_SKB1-SKB1_ALTKT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GLPOS_C_GL_CT_SKB1-SKB1_ALTKT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SKB1_RECID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_GLPOS_C_GL_CT_SKB1-SKB1_RECID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GLPOS_C_GL_CT_SKB1-SKB1_RECID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit FMCIS, internal->external for field SKB1_FIPOS
CALL FUNCTION 'CONVERSION_EXIT_FMCIS_OUTPUT'
  EXPORTING
    input =                      WA_GLPOS_C_GL_CT_SKB1-SKB1_FIPOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GLPOS_C_GL_CT_SKB1-SKB1_FIPOS.
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_GLPOS_C_GL_CT_SKB1_STR, 
SKB1_BEGRU TYPE STRING,
SKB1_BUSAB TYPE STRING,
SKB1_DATLZ TYPE STRING,
SKB1_ERDAT TYPE STRING,
SKB1_ERNAM TYPE STRING,
SKB1_FDGRV TYPE STRING,
SKB1_FDLEV TYPE STRING,
SKB1_FIPLS TYPE STRING,
SKB1_FSTAG TYPE STRING,
SKB1_HBKID TYPE STRING,
SKB1_HKTID TYPE STRING,
SKB1_KDFSL TYPE STRING,
SKB1_MITKZ TYPE STRING,
SKB1_MWSKZ TYPE STRING,
SKB1_STEXT TYPE STRING,
SKB1_VZSKZ TYPE STRING,
SKB1_WAERS TYPE STRING,
SKB1_WMETH TYPE STRING,
SKB1_XGKON TYPE STRING,
SKB1_XINTB TYPE STRING,
SKB1_XKRES TYPE STRING,
SKB1_XLOEB TYPE STRING,
SKB1_XNKON TYPE STRING,
SKB1_XOPVW TYPE STRING,
SKB1_XSPEB TYPE STRING,
SKB1_ZINDT TYPE STRING,
SKB1_ZINRT TYPE STRING,
SKB1_ZUAWA TYPE STRING,
SKB1_ALTKT TYPE STRING,
SKB1_XMITK TYPE STRING,
SKB1_RECID TYPE STRING,
SKB1_FIPOS TYPE STRING,
SKB1_XMWNO TYPE STRING,
SKB1_XSALH TYPE STRING,
SKB1_BEWGP TYPE STRING,
SKB1_INFKY TYPE STRING,
SKB1_TOGRU TYPE STRING,
SKB1_XLGCLR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_GLPOS_C_GL_CT_SKB1_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_GLPOS_C_GL_CT_SKB1_STR-SKB1_BEGRU sy-vline 
WA_GLPOS_C_GL_CT_SKB1_STR-SKB1_BUSAB sy-vline 
WA_GLPOS_C_GL_CT_SKB1_STR-SKB1_DATLZ sy-vline 
WA_GLPOS_C_GL_CT_SKB1_STR-SKB1_ERDAT sy-vline 
WA_GLPOS_C_GL_CT_SKB1_STR-SKB1_ERNAM sy-vline 
WA_GLPOS_C_GL_CT_SKB1_STR-SKB1_FDGRV sy-vline 
WA_GLPOS_C_GL_CT_SKB1_STR-SKB1_FDLEV sy-vline 
WA_GLPOS_C_GL_CT_SKB1_STR-SKB1_FIPLS sy-vline 
WA_GLPOS_C_GL_CT_SKB1_STR-SKB1_FSTAG sy-vline 
WA_GLPOS_C_GL_CT_SKB1_STR-SKB1_HBKID sy-vline 
WA_GLPOS_C_GL_CT_SKB1_STR-SKB1_HKTID sy-vline 
WA_GLPOS_C_GL_CT_SKB1_STR-SKB1_KDFSL sy-vline 
WA_GLPOS_C_GL_CT_SKB1_STR-SKB1_MITKZ sy-vline 
WA_GLPOS_C_GL_CT_SKB1_STR-SKB1_MWSKZ sy-vline 
WA_GLPOS_C_GL_CT_SKB1_STR-SKB1_STEXT sy-vline 
WA_GLPOS_C_GL_CT_SKB1_STR-SKB1_VZSKZ sy-vline 
WA_GLPOS_C_GL_CT_SKB1_STR-SKB1_WAERS sy-vline 
WA_GLPOS_C_GL_CT_SKB1_STR-SKB1_WMETH sy-vline 
WA_GLPOS_C_GL_CT_SKB1_STR-SKB1_XGKON sy-vline 
WA_GLPOS_C_GL_CT_SKB1_STR-SKB1_XINTB sy-vline 
WA_GLPOS_C_GL_CT_SKB1_STR-SKB1_XKRES sy-vline 
WA_GLPOS_C_GL_CT_SKB1_STR-SKB1_XLOEB sy-vline 
WA_GLPOS_C_GL_CT_SKB1_STR-SKB1_XNKON sy-vline 
WA_GLPOS_C_GL_CT_SKB1_STR-SKB1_XOPVW sy-vline 
WA_GLPOS_C_GL_CT_SKB1_STR-SKB1_XSPEB sy-vline 
WA_GLPOS_C_GL_CT_SKB1_STR-SKB1_ZINDT sy-vline 
WA_GLPOS_C_GL_CT_SKB1_STR-SKB1_ZINRT sy-vline 
WA_GLPOS_C_GL_CT_SKB1_STR-SKB1_ZUAWA sy-vline 
WA_GLPOS_C_GL_CT_SKB1_STR-SKB1_ALTKT sy-vline 
WA_GLPOS_C_GL_CT_SKB1_STR-SKB1_XMITK sy-vline 
WA_GLPOS_C_GL_CT_SKB1_STR-SKB1_RECID sy-vline 
WA_GLPOS_C_GL_CT_SKB1_STR-SKB1_FIPOS sy-vline 
WA_GLPOS_C_GL_CT_SKB1_STR-SKB1_XMWNO sy-vline 
WA_GLPOS_C_GL_CT_SKB1_STR-SKB1_XSALH sy-vline 
WA_GLPOS_C_GL_CT_SKB1_STR-SKB1_BEWGP sy-vline 
WA_GLPOS_C_GL_CT_SKB1_STR-SKB1_INFKY sy-vline 
WA_GLPOS_C_GL_CT_SKB1_STR-SKB1_TOGRU sy-vline 
WA_GLPOS_C_GL_CT_SKB1_STR-SKB1_XLGCLR sy-vline      INTO ld_text SEPARATED BY SPACE.

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