ABAP Select data from SAP table E1SKB1M into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E1SKB1M 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 E1SKB1M. 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 E1SKB1M 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_E1SKB1M TYPE STANDARD TABLE OF E1SKB1M,
      WA_E1SKB1M TYPE E1SKB1M,
      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: <E1SKB1M> TYPE E1SKB1M.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E1SKB1M.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E1SKB1M
  INTO TABLE IT_E1SKB1M.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E1SKB1M
*  INTO TABLE @DATA(IT_E1SKB1M2).
*--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_E1SKB1M INDEX 1 INTO DATA(WA_E1SKB1M2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E1SKB1M ASSIGNING <E1SKB1M>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E1SKB1M>-MSGFN = 1.
<E1SKB1M>-BUKRS = 1.
<E1SKB1M>-BEGRU = 1.
<E1SKB1M>-BUSAB = 1.
<E1SKB1M>-FDLEV = 1.

ENDLOOP.

LOOP AT IT_E1SKB1M INTO WA_E1SKB1M.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E1SKB1M-FSTAG, sy-vline,
  WA_E1SKB1M-HBKID, sy-vline,
  WA_E1SKB1M-HKTID, sy-vline,
  WA_E1SKB1M-KDFSL, sy-vline,
  WA_E1SKB1M-MITKZ, sy-vline,
  WA_E1SKB1M-MWSKZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E1SKB1M 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_E1SKB1M 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_E1SKB1M INTO WA_E1SKB1M.


*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_E1SKB1M_STR, 
MSGFN TYPE STRING,
BUKRS TYPE STRING,
BEGRU TYPE STRING,
BUSAB TYPE STRING,
FDLEV TYPE STRING,
FSTAG TYPE STRING,
HBKID TYPE STRING,
HKTID TYPE STRING,
KDFSL TYPE STRING,
MITKZ TYPE STRING,
MWSKZ TYPE STRING,
VZSKZ TYPE STRING,
WAERS TYPE STRING,
WMETH TYPE STRING,
XGKON TYPE STRING,
XINTB TYPE STRING,
XKRES TYPE STRING,
XLOEB TYPE STRING,
XNKON TYPE STRING,
XOPVW TYPE STRING,
XSPEB TYPE STRING,
ZINRT TYPE STRING,
ZUAWA TYPE STRING,
ALTKT TYPE STRING,
XMITK TYPE STRING,
RECID TYPE STRING,
FIPOS TYPE STRING,
XMWNO TYPE STRING,
XSALH TYPE STRING,
BEWGP TYPE STRING,
INFKY TYPE STRING,
TOGRU TYPE STRING,
RESERVE TYPE STRING,
MCAKEY TYPE STRING,
KATYP TYPE STRING,
MGEFL TYPE STRING,
MSEHI TYPE STRING,
X_UJ_CLR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E1SKB1M_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_E1SKB1M_STR-MSGFN sy-vline 
WA_E1SKB1M_STR-BUKRS sy-vline 
WA_E1SKB1M_STR-BEGRU sy-vline 
WA_E1SKB1M_STR-BUSAB sy-vline 
WA_E1SKB1M_STR-FDLEV sy-vline 
WA_E1SKB1M_STR-FSTAG sy-vline 
WA_E1SKB1M_STR-HBKID sy-vline 
WA_E1SKB1M_STR-HKTID sy-vline 
WA_E1SKB1M_STR-KDFSL sy-vline 
WA_E1SKB1M_STR-MITKZ sy-vline 
WA_E1SKB1M_STR-MWSKZ sy-vline 
WA_E1SKB1M_STR-VZSKZ sy-vline 
WA_E1SKB1M_STR-WAERS sy-vline 
WA_E1SKB1M_STR-WMETH sy-vline 
WA_E1SKB1M_STR-XGKON sy-vline 
WA_E1SKB1M_STR-XINTB sy-vline 
WA_E1SKB1M_STR-XKRES sy-vline 
WA_E1SKB1M_STR-XLOEB sy-vline 
WA_E1SKB1M_STR-XNKON sy-vline 
WA_E1SKB1M_STR-XOPVW sy-vline 
WA_E1SKB1M_STR-XSPEB sy-vline 
WA_E1SKB1M_STR-ZINRT sy-vline 
WA_E1SKB1M_STR-ZUAWA sy-vline 
WA_E1SKB1M_STR-ALTKT sy-vline 
WA_E1SKB1M_STR-XMITK sy-vline 
WA_E1SKB1M_STR-RECID sy-vline 
WA_E1SKB1M_STR-FIPOS sy-vline 
WA_E1SKB1M_STR-XMWNO sy-vline 
WA_E1SKB1M_STR-XSALH sy-vline 
WA_E1SKB1M_STR-BEWGP sy-vline 
WA_E1SKB1M_STR-INFKY sy-vline 
WA_E1SKB1M_STR-TOGRU sy-vline 
WA_E1SKB1M_STR-RESERVE sy-vline 
WA_E1SKB1M_STR-MCAKEY sy-vline 
WA_E1SKB1M_STR-KATYP sy-vline 
WA_E1SKB1M_STR-MGEFL sy-vline 
WA_E1SKB1M_STR-MSEHI sy-vline 
WA_E1SKB1M_STR-X_UJ_CLR sy-vline      INTO ld_text SEPARATED BY SPACE.

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