ABAP Select data from SAP table IMSEG4 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP IMSEG4 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 IMSEG4. 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 IMSEG4 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_IMSEG4 TYPE STANDARD TABLE OF IMSEG4,
      WA_IMSEG4 TYPE IMSEG4,
      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: <IMSEG4> TYPE IMSEG4.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_IMSEG4.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM IMSEG4
  INTO TABLE IT_IMSEG4.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IMSEG4
*  INTO TABLE @DATA(IT_IMSEG42).
*--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_IMSEG4 INDEX 1 INTO DATA(WA_IMSEG42).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_IMSEG4 ASSIGNING <IMSEG4>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IMSEG4>-KZVBR = 1.
<IMSEG4>-WEUNB = 1.
<IMSEG4>-SHKZG = 1.
<IMSEG4>-WAERS = 1.
<IMSEG4>-DMBTR = 1.

ENDLOOP.

LOOP AT IT_IMSEG4 INTO WA_IMSEG4.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IMSEG4-RSHKZ, sy-vline,
  WA_IMSEG4-BDMNG, sy-vline,
  WA_IMSEG4-ENMNG, sy-vline,
  WA_IMSEG4-QPLOS, sy-vline,
  WA_IMSEG4-SJAHR, sy-vline,
  WA_IMSEG4-SMBLN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IMSEG4 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_IMSEG4 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_IMSEG4 INTO WA_IMSEG4.


*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 QPLOS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IMSEG4-QPLOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMSEG4-QPLOS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field SJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_IMSEG4-SJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMSEG4-SJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SMBLN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IMSEG4-SMBLN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMSEG4-SMBLN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field TBBEL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IMSEG4-TBBEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMSEG4-TBBEL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field TBBJR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_IMSEG4-TBBJR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMSEG4-TBBJR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field QPLOA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IMSEG4-QPLOA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMSEG4-QPLOA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EXIDV
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IMSEG4-EXIDV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMSEG4-EXIDV.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VOLEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IMSEG4-VOLEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMSEG4-VOLEH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MBLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IMSEG4-MBLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMSEG4-MBLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field MJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_IMSEG4-MJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMSEG4-MJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KDAUF_SD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IMSEG4-KDAUF_SD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMSEG4-KDAUF_SD.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field GEWEI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IMSEG4-GEWEI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMSEG4-GEWEI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field WENUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IMSEG4-WENUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMSEG4-WENUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field LFBJA_INTERNAL
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_IMSEG4-LFBJA_INTERNAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMSEG4-LFBJA_INTERNAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LFBNR_INTERNAL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IMSEG4-LFBNR_INTERNAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMSEG4-LFBNR_INTERNAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PABNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IMSEG4-PABNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMSEG4-PABNUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PPRCTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IMSEG4-PPRCTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMSEG4-PPRCTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IMSEG4-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMSEG4-LIFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LLIEF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IMSEG4-LLIEF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMSEG4-LLIEF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNNR_CC
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IMSEG4-KUNNR_CC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMSEG4-KUNNR_CC.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VBUND_CC
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IMSEG4-VBUND_CC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMSEG4-VBUND_CC.
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_IMSEG4_STR, 
KZVBR TYPE STRING,
WEUNB TYPE STRING,
SHKZG TYPE STRING,
WAERS TYPE STRING,
DMBTR TYPE STRING,
RSHKZ TYPE STRING,
BDMNG TYPE STRING,
ENMNG TYPE STRING,
QPLOS TYPE STRING,
SJAHR TYPE STRING,
SMBLN TYPE STRING,
SMBLP TYPE STRING,
QM_ZUSTD TYPE STRING,
QM_UMZST TYPE STRING,
BWLVS TYPE STRING,
UMREZ TYPE STRING,
UMREN TYPE STRING,
BDTER TYPE STRING,
TBBEL TYPE STRING,
TBBPO TYPE STRING,
TBBJR TYPE STRING,
AUTYP TYPE STRING,
QPLOA TYPE STRING,
TBPKZ TYPE STRING,
TAFKZ TYPE STRING,
KZEAR_OLD TYPE STRING,
UMLGT TYPE STRING,
UMLGP TYPE STRING,
MHDAT TYPE STRING,
EXIDV TYPE STRING,
BERKZ TYPE STRING,
PRVBE TYPE STRING,
KZECH TYPE STRING,
REFIX TYPE STRING,
ILINR TYPE STRING,
VOLUM TYPE STRING,
VOLEH TYPE STRING,
ANZL1 TYPE STRING,
ANZL2 TYPE STRING,
LMEN1 TYPE STRING,
LMEN2 TYPE STRING,
LETY1 TYPE STRING,
LETY2 TYPE STRING,
KZKUB TYPE STRING,
UBTYP TYPE STRING,
UBLGP TYPE STRING,
MBLNR TYPE STRING,
MBLPO TYPE STRING,
MJAHR TYPE STRING,
URZEI TYPE STRING,
KZBWS TYPE STRING,
KDAUF_SD TYPE STRING,
KDPOS_SD TYPE STRING,
BRGEW TYPE STRING,
GEWEI TYPE STRING,
WM_KZBEW TYPE STRING,
WENUM TYPE STRING,
KANBA TYPE STRING,
LFBJA_INTERNAL TYPE STRING,
LFBNR_INTERNAL TYPE STRING,
LFPOS_INTERNAL TYPE STRING,
UPVOR TYPE STRING,
PABNUM TYPE STRING,
PABPOS TYPE STRING,
PKKEY TYPE STRING,
PARBU TYPE STRING,
PARGB TYPE STRING,
PPRCTR TYPE STRING,
LIFNR TYPE STRING,
EXBWR TYPE STRING,
EXVKW TYPE STRING,
LLIEF TYPE STRING,
J_1BEXBASE TYPE STRING,
WEMPFX TYPE STRING,
ABLADX TYPE STRING,
OBJTYPE TYPE STRING,
SPE_GTS_STOCK_TY TYPE STRING,
SPE_UM_GTS_ST_TY TYPE STRING,
KUNNR_CC TYPE STRING,
VBUND_CC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IMSEG4_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_IMSEG4_STR-KZVBR sy-vline 
WA_IMSEG4_STR-WEUNB sy-vline 
WA_IMSEG4_STR-SHKZG sy-vline 
WA_IMSEG4_STR-WAERS sy-vline 
WA_IMSEG4_STR-DMBTR sy-vline 
WA_IMSEG4_STR-RSHKZ sy-vline 
WA_IMSEG4_STR-BDMNG sy-vline 
WA_IMSEG4_STR-ENMNG sy-vline 
WA_IMSEG4_STR-QPLOS sy-vline 
WA_IMSEG4_STR-SJAHR sy-vline 
WA_IMSEG4_STR-SMBLN sy-vline 
WA_IMSEG4_STR-SMBLP sy-vline 
WA_IMSEG4_STR-QM_ZUSTD sy-vline 
WA_IMSEG4_STR-QM_UMZST sy-vline 
WA_IMSEG4_STR-BWLVS sy-vline 
WA_IMSEG4_STR-UMREZ sy-vline 
WA_IMSEG4_STR-UMREN sy-vline 
WA_IMSEG4_STR-BDTER sy-vline 
WA_IMSEG4_STR-TBBEL sy-vline 
WA_IMSEG4_STR-TBBPO sy-vline 
WA_IMSEG4_STR-TBBJR sy-vline 
WA_IMSEG4_STR-AUTYP sy-vline 
WA_IMSEG4_STR-QPLOA sy-vline 
WA_IMSEG4_STR-TBPKZ sy-vline 
WA_IMSEG4_STR-TAFKZ sy-vline 
WA_IMSEG4_STR-KZEAR_OLD sy-vline 
WA_IMSEG4_STR-UMLGT sy-vline 
WA_IMSEG4_STR-UMLGP sy-vline 
WA_IMSEG4_STR-MHDAT sy-vline 
WA_IMSEG4_STR-EXIDV sy-vline 
WA_IMSEG4_STR-BERKZ sy-vline 
WA_IMSEG4_STR-PRVBE sy-vline 
WA_IMSEG4_STR-KZECH sy-vline 
WA_IMSEG4_STR-REFIX sy-vline 
WA_IMSEG4_STR-ILINR sy-vline 
WA_IMSEG4_STR-VOLUM sy-vline 
WA_IMSEG4_STR-VOLEH sy-vline 
WA_IMSEG4_STR-ANZL1 sy-vline 
WA_IMSEG4_STR-ANZL2 sy-vline 
WA_IMSEG4_STR-LMEN1 sy-vline 
WA_IMSEG4_STR-LMEN2 sy-vline 
WA_IMSEG4_STR-LETY1 sy-vline 
WA_IMSEG4_STR-LETY2 sy-vline 
WA_IMSEG4_STR-KZKUB sy-vline 
WA_IMSEG4_STR-UBTYP sy-vline 
WA_IMSEG4_STR-UBLGP sy-vline 
WA_IMSEG4_STR-MBLNR sy-vline 
WA_IMSEG4_STR-MBLPO sy-vline 
WA_IMSEG4_STR-MJAHR sy-vline 
WA_IMSEG4_STR-URZEI sy-vline 
WA_IMSEG4_STR-KZBWS sy-vline 
WA_IMSEG4_STR-KDAUF_SD sy-vline 
WA_IMSEG4_STR-KDPOS_SD sy-vline 
WA_IMSEG4_STR-BRGEW sy-vline 
WA_IMSEG4_STR-GEWEI sy-vline 
WA_IMSEG4_STR-WM_KZBEW sy-vline 
WA_IMSEG4_STR-WENUM sy-vline 
WA_IMSEG4_STR-KANBA sy-vline 
WA_IMSEG4_STR-LFBJA_INTERNAL sy-vline 
WA_IMSEG4_STR-LFBNR_INTERNAL sy-vline 
WA_IMSEG4_STR-LFPOS_INTERNAL sy-vline 
WA_IMSEG4_STR-UPVOR sy-vline 
WA_IMSEG4_STR-PABNUM sy-vline 
WA_IMSEG4_STR-PABPOS sy-vline 
WA_IMSEG4_STR-PKKEY sy-vline 
WA_IMSEG4_STR-PARBU sy-vline 
WA_IMSEG4_STR-PARGB sy-vline 
WA_IMSEG4_STR-PPRCTR sy-vline 
WA_IMSEG4_STR-LIFNR sy-vline 
WA_IMSEG4_STR-EXBWR sy-vline 
WA_IMSEG4_STR-EXVKW sy-vline 
WA_IMSEG4_STR-LLIEF sy-vline 
WA_IMSEG4_STR-J_1BEXBASE sy-vline 
WA_IMSEG4_STR-WEMPFX sy-vline 
WA_IMSEG4_STR-ABLADX sy-vline 
WA_IMSEG4_STR-OBJTYPE sy-vline 
WA_IMSEG4_STR-SPE_GTS_STOCK_TY sy-vline 
WA_IMSEG4_STR-SPE_UM_GTS_ST_TY sy-vline 
WA_IMSEG4_STR-KUNNR_CC sy-vline 
WA_IMSEG4_STR-VBUND_CC sy-vline      INTO ld_text SEPARATED BY SPACE.

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