ABAP Select data from SAP table MCUSEGWWS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MCUSEGWWS
*  INTO TABLE @DATA(IT_MCUSEGWWS2).
*--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_MCUSEGWWS INDEX 1 INTO DATA(WA_MCUSEGWWS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MCUSEGWWS>-EKORG = 1.
<MCUSEGWWS>-VKORG = 1.
<MCUSEGWWS>-VTWEG = 1.
<MCUSEGWWS>-BZIRK = 1.
<MCUSEGWWS>-EKSGB = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MCUSEGWWS-EKGRP, sy-vline,
  WA_MCUSEGWWS-DISPO, sy-vline,
  WA_MCUSEGWWS-LTSNR, sy-vline,
  WA_MCUSEGWWS-BTRKZ, sy-vline,
  WA_MCUSEGWWS-ABTNR, sy-vline,
  WA_MCUSEGWWS-WGRU2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MCUSEGWWS 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_MCUSEGWWS 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_MCUSEGWWS INTO WA_MCUSEGWWS.


*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 MATN1, internal->external for field SATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MCUSEGWWS-SATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCUSEGWWS-SATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field SAISJ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_MCUSEGWWS-SAISJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCUSEGWWS-SAISJ.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit EAN11, internal->external for field EAN11
CALL FUNCTION 'CONVERSION_EXIT_EAN11_OUTPUT'
  EXPORTING
    input =                      WA_MCUSEGWWS-EAN11
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCUSEGWWS-EAN11.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ATINN, internal->external for field ATINM1
CALL FUNCTION 'CONVERSION_EXIT_ATINN_OUTPUT'
  EXPORTING
    input =                      WA_MCUSEGWWS-ATINM1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCUSEGWWS-ATINM1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ATINN, internal->external for field ATINM2
CALL FUNCTION 'CONVERSION_EXIT_ATINN_OUTPUT'
  EXPORTING
    input =                      WA_MCUSEGWWS-ATINM2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCUSEGWWS-ATINM2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ATINN, internal->external for field ATINM3
CALL FUNCTION 'CONVERSION_EXIT_ATINN_OUTPUT'
  EXPORTING
    input =                      WA_MCUSEGWWS-ATINM3
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCUSEGWWS-ATINM3.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit ALPHA, internal->external for field ASORT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MCUSEGWWS-ASORT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCUSEGWWS-ASORT.
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_MCUSEGWWS_STR, 
EKORG TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
BZIRK TYPE STRING,
EKSGB TYPE STRING,
EKGRP TYPE STRING,
DISPO TYPE STRING,
LTSNR TYPE STRING,
BTRKZ TYPE STRING,
ABTNR TYPE STRING,
WGRU2 TYPE STRING,
WGRU1 TYPE STRING,
MATKL TYPE STRING,
PRDHA TYPE STRING,
SATNR TYPE STRING,
MERK1 TYPE STRING,
MERK2 TYPE STRING,
MERK3 TYPE STRING,
AKTYP TYPE STRING,
AKTHE TYPE STRING,
PLGTP TYPE STRING,
SAISO TYPE STRING,
SAISJ TYPE STRING,
BWVOR TYPE STRING,
BWSCL TYPE STRING,
SERVG TYPE STRING,
BRGEW TYPE STRING,
NTGEW TYPE STRING,
GEWEI TYPE STRING,
VOLUM TYPE STRING,
VOLEH TYPE STRING,
LIFNR TYPE STRING,
LAND1 TYPE STRING,
MTART TYPE STRING,
WMAKG TYPE STRING,
WRKGR2 TYPE STRING,
WRKGR1 TYPE STRING,
EAN11 TYPE STRING,
IDNLF TYPE STRING,
KOLIF TYPE STRING,
ATINM1 TYPE STRING,
ATINM2 TYPE STRING,
ATINM3 TYPE STRING,
ATTYP TYPE STRING,
STRNR TYPE STRING,
UBPEPM TYPE STRING,
UBPGEO TYPE STRING,
UBMEPM TYPE STRING,
UBMGEO TYPE STRING,
UBPVPM TYPE STRING,
UBPGVO TYPE STRING,
UBPGVP TYPE STRING,
UBMVPM TYPE STRING,
UBMGVO TYPE STRING,
UBMGVP TYPE STRING,
ABGGEO TYPE STRING,
ABGGVO TYPE STRING,
ABGGVP TYPE STRING,
ZUGGEO TYPE STRING,
ZUGGVO TYPE STRING,
ZUGGVP TYPE STRING,
DPFLG TYPE STRING,
ERFME TYPE STRING,
WKUNNR TYPE STRING,
BIWMNG TYPE STRING,
BIWMVE TYPE STRING,
BIWGEO TYPE STRING,
BIWGVO TYPE STRING,
BIWGVP TYPE STRING,
BRELEV TYPE STRING,
NEUAUF_BEW TYPE STRING,
BWVORG TYPE STRING,
FILGRP TYPE STRING,
PSWAE TYPE STRING,
PLMHT TYPE STRING,
ASORT TYPE STRING,
AVGW1 TYPE STRING,
AVGW2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MCUSEGWWS_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_MCUSEGWWS_STR-EKORG sy-vline 
WA_MCUSEGWWS_STR-VKORG sy-vline 
WA_MCUSEGWWS_STR-VTWEG sy-vline 
WA_MCUSEGWWS_STR-BZIRK sy-vline 
WA_MCUSEGWWS_STR-EKSGB sy-vline 
WA_MCUSEGWWS_STR-EKGRP sy-vline 
WA_MCUSEGWWS_STR-DISPO sy-vline 
WA_MCUSEGWWS_STR-LTSNR sy-vline 
WA_MCUSEGWWS_STR-BTRKZ sy-vline 
WA_MCUSEGWWS_STR-ABTNR sy-vline 
WA_MCUSEGWWS_STR-WGRU2 sy-vline 
WA_MCUSEGWWS_STR-WGRU1 sy-vline 
WA_MCUSEGWWS_STR-MATKL sy-vline 
WA_MCUSEGWWS_STR-PRDHA sy-vline 
WA_MCUSEGWWS_STR-SATNR sy-vline 
WA_MCUSEGWWS_STR-MERK1 sy-vline 
WA_MCUSEGWWS_STR-MERK2 sy-vline 
WA_MCUSEGWWS_STR-MERK3 sy-vline 
WA_MCUSEGWWS_STR-AKTYP sy-vline 
WA_MCUSEGWWS_STR-AKTHE sy-vline 
WA_MCUSEGWWS_STR-PLGTP sy-vline 
WA_MCUSEGWWS_STR-SAISO sy-vline 
WA_MCUSEGWWS_STR-SAISJ sy-vline 
WA_MCUSEGWWS_STR-BWVOR sy-vline 
WA_MCUSEGWWS_STR-BWSCL sy-vline 
WA_MCUSEGWWS_STR-SERVG sy-vline 
WA_MCUSEGWWS_STR-BRGEW sy-vline 
WA_MCUSEGWWS_STR-NTGEW sy-vline 
WA_MCUSEGWWS_STR-GEWEI sy-vline 
WA_MCUSEGWWS_STR-VOLUM sy-vline 
WA_MCUSEGWWS_STR-VOLEH sy-vline 
WA_MCUSEGWWS_STR-LIFNR sy-vline 
WA_MCUSEGWWS_STR-LAND1 sy-vline 
WA_MCUSEGWWS_STR-MTART sy-vline 
WA_MCUSEGWWS_STR-WMAKG sy-vline 
WA_MCUSEGWWS_STR-WRKGR2 sy-vline 
WA_MCUSEGWWS_STR-WRKGR1 sy-vline 
WA_MCUSEGWWS_STR-EAN11 sy-vline 
WA_MCUSEGWWS_STR-IDNLF sy-vline 
WA_MCUSEGWWS_STR-KOLIF sy-vline 
WA_MCUSEGWWS_STR-ATINM1 sy-vline 
WA_MCUSEGWWS_STR-ATINM2 sy-vline 
WA_MCUSEGWWS_STR-ATINM3 sy-vline 
WA_MCUSEGWWS_STR-ATTYP sy-vline 
WA_MCUSEGWWS_STR-STRNR sy-vline 
WA_MCUSEGWWS_STR-UBPEPM sy-vline 
WA_MCUSEGWWS_STR-UBPGEO sy-vline 
WA_MCUSEGWWS_STR-UBMEPM sy-vline 
WA_MCUSEGWWS_STR-UBMGEO sy-vline 
WA_MCUSEGWWS_STR-UBPVPM sy-vline 
WA_MCUSEGWWS_STR-UBPGVO sy-vline 
WA_MCUSEGWWS_STR-UBPGVP sy-vline 
WA_MCUSEGWWS_STR-UBMVPM sy-vline 
WA_MCUSEGWWS_STR-UBMGVO sy-vline 
WA_MCUSEGWWS_STR-UBMGVP sy-vline 
WA_MCUSEGWWS_STR-ABGGEO sy-vline 
WA_MCUSEGWWS_STR-ABGGVO sy-vline 
WA_MCUSEGWWS_STR-ABGGVP sy-vline 
WA_MCUSEGWWS_STR-ZUGGEO sy-vline 
WA_MCUSEGWWS_STR-ZUGGVO sy-vline 
WA_MCUSEGWWS_STR-ZUGGVP sy-vline 
WA_MCUSEGWWS_STR-DPFLG sy-vline 
WA_MCUSEGWWS_STR-ERFME sy-vline 
WA_MCUSEGWWS_STR-WKUNNR sy-vline 
WA_MCUSEGWWS_STR-BIWMNG sy-vline 
WA_MCUSEGWWS_STR-BIWMVE sy-vline 
WA_MCUSEGWWS_STR-BIWGEO sy-vline 
WA_MCUSEGWWS_STR-BIWGVO sy-vline 
WA_MCUSEGWWS_STR-BIWGVP sy-vline 
WA_MCUSEGWWS_STR-BRELEV sy-vline 
WA_MCUSEGWWS_STR-NEUAUF_BEW sy-vline 
WA_MCUSEGWWS_STR-BWVORG sy-vline 
WA_MCUSEGWWS_STR-FILGRP sy-vline 
WA_MCUSEGWWS_STR-PSWAE sy-vline 
WA_MCUSEGWWS_STR-PLMHT sy-vline 
WA_MCUSEGWWS_STR-ASORT sy-vline 
WA_MCUSEGWWS_STR-AVGW1 sy-vline 
WA_MCUSEGWWS_STR-AVGW2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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