ABAP Select data from SAP table /KYK/ISS_ME2M into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP /KYK/ISS_ME2M 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 /KYK/ISS_ME2M. 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 /KYK/ISS_ME2M 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_/KYK/ISS_ME2M TYPE STANDARD TABLE OF /KYK/ISS_ME2M,
      WA_/KYK/ISS_ME2M TYPE /KYK/ISS_ME2M,
      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: </KYK/ISS_ME2M> TYPE /KYK/ISS_ME2M.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/KYK/ISS_ME2M.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /KYK/ISS_ME2M
  INTO TABLE IT_/KYK/ISS_ME2M.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /KYK/ISS_ME2M
*  INTO TABLE @DATA(IT_/KYK/ISS_ME2M2).
*--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_/KYK/ISS_ME2M INDEX 1 INTO DATA(WA_/KYK/ISS_ME2M2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/KYK/ISS_ME2M ASSIGNING </KYK/ISS_ME2M>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</KYK/ISS_ME2M>-EBELN = 1.
</KYK/ISS_ME2M>-EBELP = 1.
</KYK/ISS_ME2M>-BSART = 1.
</KYK/ISS_ME2M>-BSTYP = 1.
</KYK/ISS_ME2M>-SUPERFIELD = 1.

ENDLOOP.

LOOP AT IT_/KYK/ISS_ME2M INTO WA_/KYK/ISS_ME2M.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/KYK/ISS_ME2M-EKORG, sy-vline,
  WA_/KYK/ISS_ME2M-EKGRP, sy-vline,
  WA_/KYK/ISS_ME2M-BEDAT, sy-vline,
  WA_/KYK/ISS_ME2M-EMATN, sy-vline,
  WA_/KYK/ISS_ME2M-TXZ01, sy-vline,
  WA_/KYK/ISS_ME2M-MATKL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/KYK/ISS_ME2M 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_/KYK/ISS_ME2M 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_/KYK/ISS_ME2M INTO WA_/KYK/ISS_ME2M.


*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.

*Conversion exit ALPHA, internal->external for field EBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/KYK/ISS_ME2M-EBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/KYK/ISS_ME2M-EBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field EMATN
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_/KYK/ISS_ME2M-EMATN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/KYK/ISS_ME2M-EMATN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/KYK/ISS_ME2M-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/KYK/ISS_ME2M-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field LMEIN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/KYK/ISS_ME2M-LMEIN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/KYK/ISS_ME2M-LMEIN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KONNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/KYK/ISS_ME2M-KONNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/KYK/ISS_ME2M-KONNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field INFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/KYK/ISS_ME2M-INFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/KYK/ISS_ME2M-INFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field BPRME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/KYK/ISS_ME2M-BPRME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/KYK/ISS_ME2M-BPRME.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_/KYK/ISS_ME2M_STR, 
EBELN TYPE STRING,
EBELP TYPE STRING,
BSART TYPE STRING,
BSTYP TYPE STRING,
SUPERFIELD TYPE STRING,
EKORG TYPE STRING,
EKGRP TYPE STRING,
BEDAT TYPE STRING,
EMATN TYPE STRING,
TXZ01 TYPE STRING,
MATKL TYPE STRING,
LOEKZ TYPE STRING,
EPSTP TYPE STRING,
KNTTP TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
LAGMG TYPE STRING,
LMEIN TYPE STRING,
NETPR TYPE STRING,
WAERS TYPE STRING,
PEINH TYPE STRING,
KONNR TYPE STRING,
KTPNR TYPE STRING,
KTWRT TYPE STRING,
OFZWT TYPE STRING,
KTWTO TYPE STRING,
KTMNG TYPE STRING,
OFZMG TYPE STRING,
KDATB TYPE STRING,
KDATE TYPE STRING,
MGLIEF TYPE STRING,
WTLIEF TYPE STRING,
MGINV TYPE STRING,
WTINV TYPE STRING,
AZPOS TYPE STRING,
INFNR TYPE STRING,
FRGGR TYPE STRING,
FRGSX TYPE STRING,
FRGZU TYPE STRING,
FRGKE TYPE STRING,
BPRME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/KYK/ISS_ME2M_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_/KYK/ISS_ME2M_STR-EBELN sy-vline 
WA_/KYK/ISS_ME2M_STR-EBELP sy-vline 
WA_/KYK/ISS_ME2M_STR-BSART sy-vline 
WA_/KYK/ISS_ME2M_STR-BSTYP sy-vline 
WA_/KYK/ISS_ME2M_STR-SUPERFIELD sy-vline 
WA_/KYK/ISS_ME2M_STR-EKORG sy-vline 
WA_/KYK/ISS_ME2M_STR-EKGRP sy-vline 
WA_/KYK/ISS_ME2M_STR-BEDAT sy-vline 
WA_/KYK/ISS_ME2M_STR-EMATN sy-vline 
WA_/KYK/ISS_ME2M_STR-TXZ01 sy-vline 
WA_/KYK/ISS_ME2M_STR-MATKL sy-vline 
WA_/KYK/ISS_ME2M_STR-LOEKZ sy-vline 
WA_/KYK/ISS_ME2M_STR-EPSTP sy-vline 
WA_/KYK/ISS_ME2M_STR-KNTTP sy-vline 
WA_/KYK/ISS_ME2M_STR-WERKS sy-vline 
WA_/KYK/ISS_ME2M_STR-LGORT sy-vline 
WA_/KYK/ISS_ME2M_STR-MENGE sy-vline 
WA_/KYK/ISS_ME2M_STR-MEINS sy-vline 
WA_/KYK/ISS_ME2M_STR-LAGMG sy-vline 
WA_/KYK/ISS_ME2M_STR-LMEIN sy-vline 
WA_/KYK/ISS_ME2M_STR-NETPR sy-vline 
WA_/KYK/ISS_ME2M_STR-WAERS sy-vline 
WA_/KYK/ISS_ME2M_STR-PEINH sy-vline 
WA_/KYK/ISS_ME2M_STR-KONNR sy-vline 
WA_/KYK/ISS_ME2M_STR-KTPNR sy-vline 
WA_/KYK/ISS_ME2M_STR-KTWRT sy-vline 
WA_/KYK/ISS_ME2M_STR-OFZWT sy-vline 
WA_/KYK/ISS_ME2M_STR-KTWTO sy-vline 
WA_/KYK/ISS_ME2M_STR-KTMNG sy-vline 
WA_/KYK/ISS_ME2M_STR-OFZMG sy-vline 
WA_/KYK/ISS_ME2M_STR-KDATB sy-vline 
WA_/KYK/ISS_ME2M_STR-KDATE sy-vline 
WA_/KYK/ISS_ME2M_STR-MGLIEF sy-vline 
WA_/KYK/ISS_ME2M_STR-WTLIEF sy-vline 
WA_/KYK/ISS_ME2M_STR-MGINV sy-vline 
WA_/KYK/ISS_ME2M_STR-WTINV sy-vline 
WA_/KYK/ISS_ME2M_STR-AZPOS sy-vline 
WA_/KYK/ISS_ME2M_STR-INFNR sy-vline 
WA_/KYK/ISS_ME2M_STR-FRGGR sy-vline 
WA_/KYK/ISS_ME2M_STR-FRGSX sy-vline 
WA_/KYK/ISS_ME2M_STR-FRGZU sy-vline 
WA_/KYK/ISS_ME2M_STR-FRGKE sy-vline 
WA_/KYK/ISS_ME2M_STR-BPRME sy-vline      INTO ld_text SEPARATED BY SPACE.

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