ABAP Select data from SAP table E1S2KMOAH into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E1S2KMOAH 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 E1S2KMOAH. 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 E1S2KMOAH 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_E1S2KMOAH TYPE STANDARD TABLE OF E1S2KMOAH,
      WA_E1S2KMOAH TYPE E1S2KMOAH,
      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: <E1S2KMOAH> TYPE E1S2KMOAH.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E1S2KMOAH.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E1S2KMOAH
  INTO TABLE IT_E1S2KMOAH.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E1S2KMOAH
*  INTO TABLE @DATA(IT_E1S2KMOAH2).
*--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_E1S2KMOAH INDEX 1 INTO DATA(WA_E1S2KMOAH2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E1S2KMOAH ASSIGNING <E1S2KMOAH>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E1S2KMOAH>-COC = 1.
<E1S2KMOAH>-CUU = 1.
<E1S2KMOAH>-COU = 1.
<E1S2KMOAH>-IPO = 1.
<E1S2KMOAH>-PCY = 1.

ENDLOOP.

LOOP AT IT_E1S2KMOAH INTO WA_E1S2KMOAH.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E1S2KMOAH-PCN, sy-vline,
  WA_E1S2KMOAH-CHG, sy-vline,
  WA_E1S2KMOAH-PCD, sy-vline,
  WA_E1S2KMOAH-PBN, sy-vline,
  WA_E1S2KMOAH-QNO, sy-vline,
  WA_E1S2KMOAH-QDT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E1S2KMOAH 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_E1S2KMOAH 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_E1S2KMOAH INTO WA_E1S2KMOAH.


*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_E1S2KMOAH_STR, 
COC TYPE STRING,
CUU TYPE STRING,
COU TYPE STRING,
IPO TYPE STRING,
PCY TYPE STRING,
PCN TYPE STRING,
CHG TYPE STRING,
PCD TYPE STRING,
PBN TYPE STRING,
QNO TYPE STRING,
QDT TYPE STRING,
CRE TYPE STRING,
CAA TYPE STRING,
IPP TYPE STRING,
UDU TYPE STRING,
RDD TYPE STRING,
FDD TYPE STRING,
PTY TYPE STRING,
SHM TYPE STRING,
ITU TYPE STRING,
CAU TYPE STRING,
PLC TYPE STRING,
STU TYPE STRING,
SMB TYPE STRING,
ECC TYPE STRING,
CDD TYPE STRING,
SRU TYPE STRING,
SIU TYPE STRING,
TUU TYPE STRING,
MESTYP TYPE STRING,
MESCOD TYPE STRING,
MESFCT TYPE STRING,
BELPOS TYPE STRING,
BELNR TYPE STRING,
POSEX TYPE STRING,
EKORG TYPE STRING,
PARTN TYPE STRING,
SUPLC TYPE STRING,
SHITO TYPE STRING,
QUOTDT TYPE STRING,
QUOTNR TYPE STRING,
PADPRI TYPE STRING,
EDATU TYPE STRING,
EBELN TYPE STRING,
VBELN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E1S2KMOAH_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_E1S2KMOAH_STR-COC sy-vline 
WA_E1S2KMOAH_STR-CUU sy-vline 
WA_E1S2KMOAH_STR-COU sy-vline 
WA_E1S2KMOAH_STR-IPO sy-vline 
WA_E1S2KMOAH_STR-PCY sy-vline 
WA_E1S2KMOAH_STR-PCN sy-vline 
WA_E1S2KMOAH_STR-CHG sy-vline 
WA_E1S2KMOAH_STR-PCD sy-vline 
WA_E1S2KMOAH_STR-PBN sy-vline 
WA_E1S2KMOAH_STR-QNO sy-vline 
WA_E1S2KMOAH_STR-QDT sy-vline 
WA_E1S2KMOAH_STR-CRE sy-vline 
WA_E1S2KMOAH_STR-CAA sy-vline 
WA_E1S2KMOAH_STR-IPP sy-vline 
WA_E1S2KMOAH_STR-UDU sy-vline 
WA_E1S2KMOAH_STR-RDD sy-vline 
WA_E1S2KMOAH_STR-FDD sy-vline 
WA_E1S2KMOAH_STR-PTY sy-vline 
WA_E1S2KMOAH_STR-SHM sy-vline 
WA_E1S2KMOAH_STR-ITU sy-vline 
WA_E1S2KMOAH_STR-CAU sy-vline 
WA_E1S2KMOAH_STR-PLC sy-vline 
WA_E1S2KMOAH_STR-STU sy-vline 
WA_E1S2KMOAH_STR-SMB sy-vline 
WA_E1S2KMOAH_STR-ECC sy-vline 
WA_E1S2KMOAH_STR-CDD sy-vline 
WA_E1S2KMOAH_STR-SRU sy-vline 
WA_E1S2KMOAH_STR-SIU sy-vline 
WA_E1S2KMOAH_STR-TUU sy-vline 
WA_E1S2KMOAH_STR-MESTYP sy-vline 
WA_E1S2KMOAH_STR-MESCOD sy-vline 
WA_E1S2KMOAH_STR-MESFCT sy-vline 
WA_E1S2KMOAH_STR-BELPOS sy-vline 
WA_E1S2KMOAH_STR-BELNR sy-vline 
WA_E1S2KMOAH_STR-POSEX sy-vline 
WA_E1S2KMOAH_STR-EKORG sy-vline 
WA_E1S2KMOAH_STR-PARTN sy-vline 
WA_E1S2KMOAH_STR-SUPLC sy-vline 
WA_E1S2KMOAH_STR-SHITO sy-vline 
WA_E1S2KMOAH_STR-QUOTDT sy-vline 
WA_E1S2KMOAH_STR-QUOTNR sy-vline 
WA_E1S2KMOAH_STR-PADPRI sy-vline 
WA_E1S2KMOAH_STR-EDATU sy-vline 
WA_E1S2KMOAH_STR-EBELN sy-vline 
WA_E1S2KMOAH_STR-VBELN sy-vline      INTO ld_text SEPARATED BY SPACE.

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