ABAP Select data from SAP table E1S2KMPFH into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E1S2KMPFH 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 E1S2KMPFH. 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 E1S2KMPFH 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_E1S2KMPFH TYPE STANDARD TABLE OF E1S2KMPFH,
      WA_E1S2KMPFH TYPE E1S2KMPFH,
      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: <E1S2KMPFH> TYPE E1S2KMPFH.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E1S2KMPFH.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E1S2KMPFH
  INTO TABLE IT_E1S2KMPFH.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E1S2KMPFH
*  INTO TABLE @DATA(IT_E1S2KMPFH2).
*--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_E1S2KMPFH INDEX 1 INTO DATA(WA_E1S2KMPFH2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E1S2KMPFH ASSIGNING <E1S2KMPFH>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E1S2KMPFH>-COC = 1.
<E1S2KMPFH>-CUU = 1.
<E1S2KMPFH>-COU = 1.
<E1S2KMPFH>-CRE = 1.
<E1S2KMPFH>-CAA = 1.

ENDLOOP.

LOOP AT IT_E1S2KMPFH INTO WA_E1S2KMPFH.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E1S2KMPFH-CEF, sy-vline,
  WA_E1S2KMPFH-CEX, sy-vline,
  WA_E1S2KMPFH-PLC, sy-vline,
  WA_E1S2KMPFH-SMB, sy-vline,
  WA_E1S2KMPFH-ECC, sy-vline,
  WA_E1S2KMPFH-PCO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E1S2KMPFH 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_E1S2KMPFH 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_E1S2KMPFH INTO WA_E1S2KMPFH.


*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_E1S2KMPFH_STR, 
COC TYPE STRING,
CUU TYPE STRING,
COU TYPE STRING,
CRE TYPE STRING,
CAA TYPE STRING,
CEF TYPE STRING,
CEX TYPE STRING,
PLC TYPE STRING,
SMB TYPE STRING,
ECC TYPE STRING,
PCO TYPE STRING,
SRU TYPE STRING,
CUR TYPE STRING,
DPT TYPE STRING,
PCA TYPE STRING,
EXC TYPE STRING,
ERT TYPE STRING,
IPP TYPE STRING,
MESTYP TYPE STRING,
MESCOD TYPE STRING,
MESFCT TYPE STRING,
POSEX TYPE STRING,
EKORG TYPE STRING,
SUPLC TYPE STRING,
PARTN TYPE STRING,
INQBELNR TYPE STRING,
CONTRACT TYPE STRING,
FORECAST TYPE STRING,
PERIOD TYPE STRING,
BELPOSEX TYPE STRING,
BELNR TYPE STRING,
BELPOS TYPE STRING,
ANGDT TYPE STRING,
BNDDT TYPE STRING,
QUODT TYPE STRING,
PACKCODE TYPE STRING,
SUS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E1S2KMPFH_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_E1S2KMPFH_STR-COC sy-vline 
WA_E1S2KMPFH_STR-CUU sy-vline 
WA_E1S2KMPFH_STR-COU sy-vline 
WA_E1S2KMPFH_STR-CRE sy-vline 
WA_E1S2KMPFH_STR-CAA sy-vline 
WA_E1S2KMPFH_STR-CEF sy-vline 
WA_E1S2KMPFH_STR-CEX sy-vline 
WA_E1S2KMPFH_STR-PLC sy-vline 
WA_E1S2KMPFH_STR-SMB sy-vline 
WA_E1S2KMPFH_STR-ECC sy-vline 
WA_E1S2KMPFH_STR-PCO sy-vline 
WA_E1S2KMPFH_STR-SRU sy-vline 
WA_E1S2KMPFH_STR-CUR sy-vline 
WA_E1S2KMPFH_STR-DPT sy-vline 
WA_E1S2KMPFH_STR-PCA sy-vline 
WA_E1S2KMPFH_STR-EXC sy-vline 
WA_E1S2KMPFH_STR-ERT sy-vline 
WA_E1S2KMPFH_STR-IPP sy-vline 
WA_E1S2KMPFH_STR-MESTYP sy-vline 
WA_E1S2KMPFH_STR-MESCOD sy-vline 
WA_E1S2KMPFH_STR-MESFCT sy-vline 
WA_E1S2KMPFH_STR-POSEX sy-vline 
WA_E1S2KMPFH_STR-EKORG sy-vline 
WA_E1S2KMPFH_STR-SUPLC sy-vline 
WA_E1S2KMPFH_STR-PARTN sy-vline 
WA_E1S2KMPFH_STR-INQBELNR sy-vline 
WA_E1S2KMPFH_STR-CONTRACT sy-vline 
WA_E1S2KMPFH_STR-FORECAST sy-vline 
WA_E1S2KMPFH_STR-PERIOD sy-vline 
WA_E1S2KMPFH_STR-BELPOSEX sy-vline 
WA_E1S2KMPFH_STR-BELNR sy-vline 
WA_E1S2KMPFH_STR-BELPOS sy-vline 
WA_E1S2KMPFH_STR-ANGDT sy-vline 
WA_E1S2KMPFH_STR-BNDDT sy-vline 
WA_E1S2KMPFH_STR-QUODT sy-vline 
WA_E1S2KMPFH_STR-PACKCODE sy-vline 
WA_E1S2KMPFH_STR-SUS sy-vline      INTO ld_text SEPARATED BY SPACE.

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