ABAP Select data from SAP table E1S2KMPLS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E1S2KMPLS 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 E1S2KMPLS. 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 E1S2KMPLS 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_E1S2KMPLS TYPE STANDARD TABLE OF E1S2KMPLS,
      WA_E1S2KMPLS TYPE E1S2KMPLS,
      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: <E1S2KMPLS> TYPE E1S2KMPLS.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E1S2KMPLS.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E1S2KMPLS
  INTO TABLE IT_E1S2KMPLS.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E1S2KMPLS
*  INTO TABLE @DATA(IT_E1S2KMPLS2).
*--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_E1S2KMPLS INDEX 1 INTO DATA(WA_E1S2KMPLS2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E1S2KMPLS ASSIGNING <E1S2KMPLS>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E1S2KMPLS>-SLK = 1.
<E1S2KMPLS>-ORU = 1.
<E1S2KMPLS>-PLC = 1.
<E1S2KMPLS>-CUR = 1.
<E1S2KMPLS>-DPT = 1.

ENDLOOP.

LOOP AT IT_E1S2KMPLS INTO WA_E1S2KMPLS.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E1S2KMPLS-EXC, sy-vline,
  WA_E1S2KMPLS-ERT, sy-vline,
  WA_E1S2KMPLS-QTY, sy-vline,
  WA_E1S2KMPLS-SPQ, sy-vline,
  WA_E1S2KMPLS-MSQ, sy-vline,
  WA_E1S2KMPLS-UPR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E1S2KMPLS 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_E1S2KMPLS 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_E1S2KMPLS INTO WA_E1S2KMPLS.


*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_E1S2KMPLS_STR, 
SLK TYPE STRING,
ORU TYPE STRING,
PLC TYPE STRING,
CUR TYPE STRING,
DPT TYPE STRING,
EXC TYPE STRING,
ERT TYPE STRING,
QTY TYPE STRING,
SPQ TYPE STRING,
MSQ TYPE STRING,
UPR TYPE STRING,
PCA TYPE STRING,
CHG TYPE STRING,
UDU TYPE STRING,
RDD TYPE STRING,
FDD TYPE STRING,
TUU TYPE STRING,
CAU TYPE STRING,
SHM TYPE STRING,
SHU TYPE STRING,
EDATU TYPE STRING,
WMENG TYPE STRING,
POSEX TYPE STRING,
CURCY TYPE STRING,
LIFNR TYPE STRING,
ORN TYPE STRING,
ORT TYPE STRING,
UDC TYPE STRING,
CAR TYPE STRING,
TRU TYPE STRING,
SHF TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E1S2KMPLS_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_E1S2KMPLS_STR-SLK sy-vline 
WA_E1S2KMPLS_STR-ORU sy-vline 
WA_E1S2KMPLS_STR-PLC sy-vline 
WA_E1S2KMPLS_STR-CUR sy-vline 
WA_E1S2KMPLS_STR-DPT sy-vline 
WA_E1S2KMPLS_STR-EXC sy-vline 
WA_E1S2KMPLS_STR-ERT sy-vline 
WA_E1S2KMPLS_STR-QTY sy-vline 
WA_E1S2KMPLS_STR-SPQ sy-vline 
WA_E1S2KMPLS_STR-MSQ sy-vline 
WA_E1S2KMPLS_STR-UPR sy-vline 
WA_E1S2KMPLS_STR-PCA sy-vline 
WA_E1S2KMPLS_STR-CHG sy-vline 
WA_E1S2KMPLS_STR-UDU sy-vline 
WA_E1S2KMPLS_STR-RDD sy-vline 
WA_E1S2KMPLS_STR-FDD sy-vline 
WA_E1S2KMPLS_STR-TUU sy-vline 
WA_E1S2KMPLS_STR-CAU sy-vline 
WA_E1S2KMPLS_STR-SHM sy-vline 
WA_E1S2KMPLS_STR-SHU sy-vline 
WA_E1S2KMPLS_STR-EDATU sy-vline 
WA_E1S2KMPLS_STR-WMENG sy-vline 
WA_E1S2KMPLS_STR-POSEX sy-vline 
WA_E1S2KMPLS_STR-CURCY sy-vline 
WA_E1S2KMPLS_STR-LIFNR sy-vline 
WA_E1S2KMPLS_STR-ORN sy-vline 
WA_E1S2KMPLS_STR-ORT sy-vline 
WA_E1S2KMPLS_STR-UDC sy-vline 
WA_E1S2KMPLS_STR-CAR sy-vline 
WA_E1S2KMPLS_STR-TRU sy-vline 
WA_E1S2KMPLS_STR-SHF sy-vline      INTO ld_text SEPARATED BY SPACE.

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