ABAP Select data from SAP table E1MKALL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E1MKALL 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 E1MKALL. 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 E1MKALL 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_E1MKALL TYPE STANDARD TABLE OF E1MKALL,
      WA_E1MKALL TYPE E1MKALL,
      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: <E1MKALL> TYPE E1MKALL.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E1MKALL.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E1MKALL
  INTO TABLE IT_E1MKALL.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E1MKALL
*  INTO TABLE @DATA(IT_E1MKALL2).
*--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_E1MKALL INDEX 1 INTO DATA(WA_E1MKALL2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E1MKALL ASSIGNING <E1MKALL>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E1MKALL>-MATNR = 1.
<E1MKALL>-WERKS = 1.
<E1MKALL>-VERID = 1.
<E1MKALL>-BDATU = 1.
<E1MKALL>-ADATU = 1.

ENDLOOP.

LOOP AT IT_E1MKALL INTO WA_E1MKALL.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E1MKALL-STLAL, sy-vline,
  WA_E1MKALL-STLAN, sy-vline,
  WA_E1MKALL-PLNTY, sy-vline,
  WA_E1MKALL-PLNNR, sy-vline,
  WA_E1MKALL-ALNAL, sy-vline,
  WA_E1MKALL-TEXT1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E1MKALL 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_E1MKALL 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_E1MKALL INTO WA_E1MKALL.


*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_E1MKALL_STR, 
MATNR TYPE STRING,
WERKS TYPE STRING,
VERID TYPE STRING,
BDATU TYPE STRING,
ADATU TYPE STRING,
STLAL TYPE STRING,
STLAN TYPE STRING,
PLNTY TYPE STRING,
PLNNR TYPE STRING,
ALNAL TYPE STRING,
TEXT1 TYPE STRING,
MEINS TYPE STRING,
BSTMI TYPE STRING,
BSTMA TYPE STRING,
MKSP TYPE STRING,
VERSIND TYPE STRING,
DIFFPLANEXEMSTR TYPE STRING,
EWM_LGNUM TYPE STRING,
EWM_LGPLA TYPE STRING,
EXE_STLAL TYPE STRING,
EXE_STLAN TYPE STRING,
EXE_PLNTY TYPE STRING,
EXE_PLNNR TYPE STRING,
EXE_ALNAL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E1MKALL_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_E1MKALL_STR-MATNR sy-vline 
WA_E1MKALL_STR-WERKS sy-vline 
WA_E1MKALL_STR-VERID sy-vline 
WA_E1MKALL_STR-BDATU sy-vline 
WA_E1MKALL_STR-ADATU sy-vline 
WA_E1MKALL_STR-STLAL sy-vline 
WA_E1MKALL_STR-STLAN sy-vline 
WA_E1MKALL_STR-PLNTY sy-vline 
WA_E1MKALL_STR-PLNNR sy-vline 
WA_E1MKALL_STR-ALNAL sy-vline 
WA_E1MKALL_STR-TEXT1 sy-vline 
WA_E1MKALL_STR-MEINS sy-vline 
WA_E1MKALL_STR-BSTMI sy-vline 
WA_E1MKALL_STR-BSTMA sy-vline 
WA_E1MKALL_STR-MKSP sy-vline 
WA_E1MKALL_STR-VERSIND sy-vline 
WA_E1MKALL_STR-DIFFPLANEXEMSTR sy-vline 
WA_E1MKALL_STR-EWM_LGNUM sy-vline 
WA_E1MKALL_STR-EWM_LGPLA sy-vline 
WA_E1MKALL_STR-EXE_STLAL sy-vline 
WA_E1MKALL_STR-EXE_STLAN sy-vline 
WA_E1MKALL_STR-EXE_PLNTY sy-vline 
WA_E1MKALL_STR-EXE_PLNNR sy-vline 
WA_E1MKALL_STR-EXE_ALNAL sy-vline      INTO ld_text SEPARATED BY SPACE.

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