ABAP Select data from SAP table MCMSEGADD2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MCMSEGADD2 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 MCMSEGADD2. 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 MCMSEGADD2 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_MCMSEGADD2 TYPE STANDARD TABLE OF MCMSEGADD2,
      WA_MCMSEGADD2 TYPE MCMSEGADD2,
      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: <MCMSEGADD2> TYPE MCMSEGADD2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_MCMSEGADD2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM MCMSEGADD2
  INTO TABLE IT_MCMSEGADD2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MCMSEGADD2
*  INTO TABLE @DATA(IT_MCMSEGADD22).
*--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_MCMSEGADD2 INDEX 1 INTO DATA(WA_MCMSEGADD22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_MCMSEGADD2 ASSIGNING <MCMSEGADD2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MCMSEGADD2>-MBLNR = 1.
<MCMSEGADD2>-MJAHR = 1.
<MCMSEGADD2>-ZEILE = 1.
<MCMSEGADD2>-KDAUF = 1.
<MCMSEGADD2>-KDPOS = 1.

ENDLOOP.

LOOP AT IT_MCMSEGADD2 INTO WA_MCMSEGADD2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MCMSEGADD2-KDEIN, sy-vline,
  WA_MCMSEGADD2-SHKZG, sy-vline,
  WA_MCMSEGADD2-BWART, sy-vline,
  WA_MCMSEGADD2-BWTAR, sy-vline,
  WA_MCMSEGADD2-SOBKZ, sy-vline,
  WA_MCMSEGADD2-KZBWS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MCMSEGADD2 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_MCMSEGADD2 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_MCMSEGADD2 INTO WA_MCMSEGADD2.


*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 MBLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MCMSEGADD2-MBLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCMSEGADD2-MBLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field MJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_MCMSEGADD2-MJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCMSEGADD2-MJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KDAUF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MCMSEGADD2-KDAUF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCMSEGADD2-KDAUF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MCMSEGADD2-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCMSEGADD2-KOSTL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MCMSEGADD2-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCMSEGADD2-AUFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ANLN1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MCMSEGADD2-ANLN1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCMSEGADD2-ANLN1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ANLN2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MCMSEGADD2-ANLN2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCMSEGADD2-ANLN2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRCTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MCMSEGADD2-PRCTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCMSEGADD2-PRCTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field PS_PSP_PNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_MCMSEGADD2-PS_PSP_PNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCMSEGADD2-PS_PSP_PNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field NPLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MCMSEGADD2-NPLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCMSEGADD2-NPLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MCMSEGADD2-EBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCMSEGADD2-EBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field UMMAT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MCMSEGADD2-UMMAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCMSEGADD2-UMMAT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AKTNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MCMSEGADD2-AKTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCMSEGADD2-AKTNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATBF
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MCMSEGADD2-MATBF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCMSEGADD2-MATBF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field UMMAB
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MCMSEGADD2-UMMAB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCMSEGADD2-UMMAB.
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_MCMSEGADD2_STR, 
MBLNR TYPE STRING,
MJAHR TYPE STRING,
ZEILE TYPE STRING,
KDAUF TYPE STRING,
KDPOS TYPE STRING,
KDEIN TYPE STRING,
SHKZG TYPE STRING,
BWART TYPE STRING,
BWTAR TYPE STRING,
SOBKZ TYPE STRING,
KZBWS TYPE STRING,
MENGE TYPE STRING,
DMBTR TYPE STRING,
BNBTR TYPE STRING,
WEMPF TYPE STRING,
ABLAD TYPE STRING,
GSBER TYPE STRING,
KOKRS TYPE STRING,
KOSTL TYPE STRING,
AUFNR TYPE STRING,
ANLN1 TYPE STRING,
ANLN2 TYPE STRING,
RSNUM TYPE STRING,
RSPOS TYPE STRING,
KZEAR TYPE STRING,
WEUNB TYPE STRING,
PALAN TYPE STRING,
LGNUM TYPE STRING,
LGTYP TYPE STRING,
LGPLA TYPE STRING,
KSTRG TYPE STRING,
PAOBJNR TYPE STRING,
PRCTR TYPE STRING,
PS_PSP_PNR TYPE STRING,
NPLNR TYPE STRING,
AUFPL TYPE STRING,
KZZUG TYPE STRING,
MENGU TYPE STRING,
WERTU TYPE STRING,
KZBEW TYPE STRING,
BUDAT TYPE STRING,
BLDAT TYPE STRING,
SYDAT TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
DMBUM TYPE STRING,
SHKUM TYPE STRING,
UMMAT TYPE STRING,
UMWRK TYPE STRING,
UMLGO TYPE STRING,
UMCHA TYPE STRING,
VKWRT TYPE STRING,
AKTNR TYPE STRING,
XINVB TYPE STRING,
VGART TYPE STRING,
GRUND TYPE STRING,
MATBF TYPE STRING,
XSTOR TYPE STRING,
ATTYP TYPE STRING,
UMMAB TYPE STRING,
VKMWS TYPE STRING,
SGTXT TYPE STRING,
APLZL TYPE STRING,
CPUDT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MCMSEGADD2_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_MCMSEGADD2_STR-MBLNR sy-vline 
WA_MCMSEGADD2_STR-MJAHR sy-vline 
WA_MCMSEGADD2_STR-ZEILE sy-vline 
WA_MCMSEGADD2_STR-KDAUF sy-vline 
WA_MCMSEGADD2_STR-KDPOS sy-vline 
WA_MCMSEGADD2_STR-KDEIN sy-vline 
WA_MCMSEGADD2_STR-SHKZG sy-vline 
WA_MCMSEGADD2_STR-BWART sy-vline 
WA_MCMSEGADD2_STR-BWTAR sy-vline 
WA_MCMSEGADD2_STR-SOBKZ sy-vline 
WA_MCMSEGADD2_STR-KZBWS sy-vline 
WA_MCMSEGADD2_STR-MENGE sy-vline 
WA_MCMSEGADD2_STR-DMBTR sy-vline 
WA_MCMSEGADD2_STR-BNBTR sy-vline 
WA_MCMSEGADD2_STR-WEMPF sy-vline 
WA_MCMSEGADD2_STR-ABLAD sy-vline 
WA_MCMSEGADD2_STR-GSBER sy-vline 
WA_MCMSEGADD2_STR-KOKRS sy-vline 
WA_MCMSEGADD2_STR-KOSTL sy-vline 
WA_MCMSEGADD2_STR-AUFNR sy-vline 
WA_MCMSEGADD2_STR-ANLN1 sy-vline 
WA_MCMSEGADD2_STR-ANLN2 sy-vline 
WA_MCMSEGADD2_STR-RSNUM sy-vline 
WA_MCMSEGADD2_STR-RSPOS sy-vline 
WA_MCMSEGADD2_STR-KZEAR sy-vline 
WA_MCMSEGADD2_STR-WEUNB sy-vline 
WA_MCMSEGADD2_STR-PALAN sy-vline 
WA_MCMSEGADD2_STR-LGNUM sy-vline 
WA_MCMSEGADD2_STR-LGTYP sy-vline 
WA_MCMSEGADD2_STR-LGPLA sy-vline 
WA_MCMSEGADD2_STR-KSTRG sy-vline 
WA_MCMSEGADD2_STR-PAOBJNR sy-vline 
WA_MCMSEGADD2_STR-PRCTR sy-vline 
WA_MCMSEGADD2_STR-PS_PSP_PNR sy-vline 
WA_MCMSEGADD2_STR-NPLNR sy-vline 
WA_MCMSEGADD2_STR-AUFPL sy-vline 
WA_MCMSEGADD2_STR-KZZUG sy-vline 
WA_MCMSEGADD2_STR-MENGU sy-vline 
WA_MCMSEGADD2_STR-WERTU sy-vline 
WA_MCMSEGADD2_STR-KZBEW sy-vline 
WA_MCMSEGADD2_STR-BUDAT sy-vline 
WA_MCMSEGADD2_STR-BLDAT sy-vline 
WA_MCMSEGADD2_STR-SYDAT sy-vline 
WA_MCMSEGADD2_STR-EBELN sy-vline 
WA_MCMSEGADD2_STR-EBELP sy-vline 
WA_MCMSEGADD2_STR-DMBUM sy-vline 
WA_MCMSEGADD2_STR-SHKUM sy-vline 
WA_MCMSEGADD2_STR-UMMAT sy-vline 
WA_MCMSEGADD2_STR-UMWRK sy-vline 
WA_MCMSEGADD2_STR-UMLGO sy-vline 
WA_MCMSEGADD2_STR-UMCHA sy-vline 
WA_MCMSEGADD2_STR-VKWRT sy-vline 
WA_MCMSEGADD2_STR-AKTNR sy-vline 
WA_MCMSEGADD2_STR-XINVB sy-vline 
WA_MCMSEGADD2_STR-VGART sy-vline 
WA_MCMSEGADD2_STR-GRUND sy-vline 
WA_MCMSEGADD2_STR-MATBF sy-vline 
WA_MCMSEGADD2_STR-XSTOR sy-vline 
WA_MCMSEGADD2_STR-ATTYP sy-vline 
WA_MCMSEGADD2_STR-UMMAB sy-vline 
WA_MCMSEGADD2_STR-VKMWS sy-vline 
WA_MCMSEGADD2_STR-SGTXT sy-vline 
WA_MCMSEGADD2_STR-APLZL sy-vline 
WA_MCMSEGADD2_STR-CPUDT sy-vline      INTO ld_text SEPARATED BY SPACE.

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