ABAP Select data from SAP table MCISEGWWS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MCISEGWWS
*  INTO TABLE @DATA(IT_MCISEGWWS2).
*--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_MCISEGWWS INDEX 1 INTO DATA(WA_MCISEGWWS2).


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

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

ENDLOOP.

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

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


*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_MCISEGWWS-SATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCISEGWWS-SATNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field WKUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MCISEGWWS-WKUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCISEGWWS-WKUNNR.
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_MCISEGWWS_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,
LANDLF TYPE STRING,
RLIFN TYPE STRING,
LAND1 TYPE STRING,
RLTSNR TYPE STRING,
RIDNLF TYPE STRING,
RKOLIF TYPE STRING,
WMINR 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,
STRNR TYPE STRING,
WKUNNR TYPE STRING,
IBUMNG TYPE STRING,
IBUGEO TYPE STRING,
IBUGVO TYPE STRING,
IBUGVP TYPE STRING,
IZLMNG TYPE STRING,
IZLGEO TYPE STRING,
IZLGVO TYPE STRING,
IZLGVP TYPE STRING,
IDPMNG TYPE STRING,
IDPGEO TYPE STRING,
IDPGVO TYPE STRING,
IDPGVP TYPE STRING,
IDMMNG TYPE STRING,
IDMGEO TYPE STRING,
IDMGVO TYPE STRING,
IDMGVP TYPE STRING,
IVSTAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MCISEGWWS_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_MCISEGWWS_STR-EKORG sy-vline 
WA_MCISEGWWS_STR-VKORG sy-vline 
WA_MCISEGWWS_STR-VTWEG sy-vline 
WA_MCISEGWWS_STR-BZIRK sy-vline 
WA_MCISEGWWS_STR-EKSGB sy-vline 
WA_MCISEGWWS_STR-EKGRP sy-vline 
WA_MCISEGWWS_STR-DISPO sy-vline 
WA_MCISEGWWS_STR-LTSNR sy-vline 
WA_MCISEGWWS_STR-BTRKZ sy-vline 
WA_MCISEGWWS_STR-ABTNR sy-vline 
WA_MCISEGWWS_STR-WGRU2 sy-vline 
WA_MCISEGWWS_STR-WGRU1 sy-vline 
WA_MCISEGWWS_STR-MATKL sy-vline 
WA_MCISEGWWS_STR-PRDHA sy-vline 
WA_MCISEGWWS_STR-SATNR sy-vline 
WA_MCISEGWWS_STR-MERK1 sy-vline 
WA_MCISEGWWS_STR-MERK2 sy-vline 
WA_MCISEGWWS_STR-MERK3 sy-vline 
WA_MCISEGWWS_STR-AKTYP sy-vline 
WA_MCISEGWWS_STR-AKTHE sy-vline 
WA_MCISEGWWS_STR-PLGTP sy-vline 
WA_MCISEGWWS_STR-SAISO sy-vline 
WA_MCISEGWWS_STR-SAISJ sy-vline 
WA_MCISEGWWS_STR-BWVOR sy-vline 
WA_MCISEGWWS_STR-BWSCL sy-vline 
WA_MCISEGWWS_STR-SERVG sy-vline 
WA_MCISEGWWS_STR-BRGEW sy-vline 
WA_MCISEGWWS_STR-NTGEW sy-vline 
WA_MCISEGWWS_STR-GEWEI sy-vline 
WA_MCISEGWWS_STR-VOLUM sy-vline 
WA_MCISEGWWS_STR-VOLEH sy-vline 
WA_MCISEGWWS_STR-LANDLF sy-vline 
WA_MCISEGWWS_STR-RLIFN sy-vline 
WA_MCISEGWWS_STR-LAND1 sy-vline 
WA_MCISEGWWS_STR-RLTSNR sy-vline 
WA_MCISEGWWS_STR-RIDNLF sy-vline 
WA_MCISEGWWS_STR-RKOLIF sy-vline 
WA_MCISEGWWS_STR-WMINR sy-vline 
WA_MCISEGWWS_STR-MTART sy-vline 
WA_MCISEGWWS_STR-WMAKG sy-vline 
WA_MCISEGWWS_STR-WRKGR2 sy-vline 
WA_MCISEGWWS_STR-WRKGR1 sy-vline 
WA_MCISEGWWS_STR-EAN11 sy-vline 
WA_MCISEGWWS_STR-IDNLF sy-vline 
WA_MCISEGWWS_STR-KOLIF sy-vline 
WA_MCISEGWWS_STR-ATINM1 sy-vline 
WA_MCISEGWWS_STR-ATINM2 sy-vline 
WA_MCISEGWWS_STR-ATINM3 sy-vline 
WA_MCISEGWWS_STR-STRNR sy-vline 
WA_MCISEGWWS_STR-WKUNNR sy-vline 
WA_MCISEGWWS_STR-IBUMNG sy-vline 
WA_MCISEGWWS_STR-IBUGEO sy-vline 
WA_MCISEGWWS_STR-IBUGVO sy-vline 
WA_MCISEGWWS_STR-IBUGVP sy-vline 
WA_MCISEGWWS_STR-IZLMNG sy-vline 
WA_MCISEGWWS_STR-IZLGEO sy-vline 
WA_MCISEGWWS_STR-IZLGVO sy-vline 
WA_MCISEGWWS_STR-IZLGVP sy-vline 
WA_MCISEGWWS_STR-IDPMNG sy-vline 
WA_MCISEGWWS_STR-IDPGEO sy-vline 
WA_MCISEGWWS_STR-IDPGVO sy-vline 
WA_MCISEGWWS_STR-IDPGVP sy-vline 
WA_MCISEGWWS_STR-IDMMNG sy-vline 
WA_MCISEGWWS_STR-IDMGEO sy-vline 
WA_MCISEGWWS_STR-IDMGVO sy-vline 
WA_MCISEGWWS_STR-IDMGVP sy-vline 
WA_MCISEGWWS_STR-IVSTAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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