ABAP Select data from SAP table MC29S into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MC29S 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 MC29S. 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 MC29S 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_MC29S TYPE STANDARD TABLE OF MC29S,
      WA_MC29S TYPE MC29S,
      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: <MC29S> TYPE MC29S.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_MC29S.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM MC29S
  INTO TABLE IT_MC29S.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MC29S
*  INTO TABLE @DATA(IT_MC29S2).
*--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_MC29S INDEX 1 INTO DATA(WA_MC29S2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_MC29S ASSIGNING <MC29S>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MC29S>-AENAM = 1.
<MC29S>-AESZN = 1.
<MC29S>-ALTSL = 1.
<MC29S>-AUSDT = 1.
<MC29S>-AUSME = 1.

ENDLOOP.

LOOP AT IT_MC29S INTO WA_MC29S.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MC29S-AUSSS, sy-vline,
  WA_MC29S-BASMG, sy-vline,
  WA_MC29S-BEARZ, sy-vline,
  WA_MC29S-BESKZ, sy-vline,
  WA_MC29S-BKLAS, sy-vline,
  WA_MC29S-BLANZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MC29S 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_MC29S 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_MC29S INTO WA_MC29S.


*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 CUNIT, internal->external for field AUSME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MC29S-AUSME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MC29S-AUSME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field FRTME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MC29S-FRTME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MC29S-FRTME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field GEWEI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MC29S-GEWEI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MC29S-GEWEI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MC29S-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MC29S-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MC29S-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MC29S-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field NFMAT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MC29S-NFMAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MC29S-NFMAT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VOLEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MC29S-VOLEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MC29S-VOLEH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field STDPD
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MC29S-STDPD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MC29S-STDPD.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRCTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MC29S-PRCTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MC29S-PRCTR.
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_MC29S_STR, 
AENAM TYPE STRING,
AESZN TYPE STRING,
ALTSL TYPE STRING,
AUSDT TYPE STRING,
AUSME TYPE STRING,
AUSSS TYPE STRING,
BASMG TYPE STRING,
BEARZ TYPE STRING,
BESKZ TYPE STRING,
BKLAS TYPE STRING,
BLANZ TYPE STRING,
BLATT TYPE STRING,
BRGEW TYPE STRING,
DISMM TYPE STRING,
DISST TYPE STRING,
DZEIT TYPE STRING,
EKGRP TYPE STRING,
ERNAM TYPE STRING,
ERSDA TYPE STRING,
FERTH TYPE STRING,
FRTME TYPE STRING,
GEWEI TYPE STRING,
GROES TYPE STRING,
KAUSF TYPE STRING,
KZAUS TYPE STRING,
LABOR TYPE STRING,
LAEDA TYPE STRING,
LGPRO TYPE STRING,
LOEVM TYPE STRING,
MAKTX TYPE STRING,
MATNR TYPE STRING,
MBRSH TYPE STRING,
MEINS TYPE STRING,
MISKZ TYPE STRING,
MTART TYPE STRING,
NFMAT TYPE STRING,
NORMT TYPE STRING,
NTGEW TYPE STRING,
PEINH TYPE STRING,
PLIFZ TYPE STRING,
SBDKZ TYPE STRING,
BWTTY TYPE STRING,
XCHAR TYPE STRING,
XCHPF TYPE STRING,
MMSTA TYPE STRING,
MMSTD TYPE STRING,
RUEZT TYPE STRING,
STPRS TYPE STRING,
TRANZ TYPE STRING,
UMREN TYPE STRING,
UMREZ TYPE STRING,
VERPR TYPE STRING,
VOLEH TYPE STRING,
VOLUM TYPE STRING,
VPRSV TYPE STRING,
VPSTA TYPE STRING,
MATKL TYPE STRING,
WEBAZ TYPE STRING,
WRKST TYPE STRING,
ZEIAR TYPE STRING,
ZEIFO TYPE STRING,
ZEINR TYPE STRING,
ZEIVR TYPE STRING,
WERKS TYPE STRING,
DSTLK TYPE STRING,
DSTLP TYPE STRING,
SOBSL TYPE STRING,
RGEKZ TYPE STRING,
KZDKZ TYPE STRING,
KZREV TYPE STRING,
KZKFG TYPE STRING,
CUOBJ TYPE STRING,
STDPD TYPE STRING,
SOBSK TYPE STRING,
KZKUP TYPE STRING,
SCHGT TYPE STRING,
EPRIO TYPE STRING,
STAWN TYPE STRING,
PREFE TYPE STRING,
PRENE TYPE STRING,
KZECH TYPE STRING,
SERNP TYPE STRING,
MTVFP TYPE STRING,
KZBED TYPE STRING,
KZWSM TYPE STRING,
PRCTR TYPE STRING,
SERLV TYPE STRING,
ATTYP TYPE STRING,
VSPVB TYPE STRING,
KZEFF TYPE STRING,
FXPRU TYPE STRING,
APOKZ TYPE STRING,
AHDIS TYPE STRING,
USEQU TYPE STRING,
MSTAE TYPE STRING,
MSTDE TYPE STRING,
BFLME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MC29S_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_MC29S_STR-AENAM sy-vline 
WA_MC29S_STR-AESZN sy-vline 
WA_MC29S_STR-ALTSL sy-vline 
WA_MC29S_STR-AUSDT sy-vline 
WA_MC29S_STR-AUSME sy-vline 
WA_MC29S_STR-AUSSS sy-vline 
WA_MC29S_STR-BASMG sy-vline 
WA_MC29S_STR-BEARZ sy-vline 
WA_MC29S_STR-BESKZ sy-vline 
WA_MC29S_STR-BKLAS sy-vline 
WA_MC29S_STR-BLANZ sy-vline 
WA_MC29S_STR-BLATT sy-vline 
WA_MC29S_STR-BRGEW sy-vline 
WA_MC29S_STR-DISMM sy-vline 
WA_MC29S_STR-DISST sy-vline 
WA_MC29S_STR-DZEIT sy-vline 
WA_MC29S_STR-EKGRP sy-vline 
WA_MC29S_STR-ERNAM sy-vline 
WA_MC29S_STR-ERSDA sy-vline 
WA_MC29S_STR-FERTH sy-vline 
WA_MC29S_STR-FRTME sy-vline 
WA_MC29S_STR-GEWEI sy-vline 
WA_MC29S_STR-GROES sy-vline 
WA_MC29S_STR-KAUSF sy-vline 
WA_MC29S_STR-KZAUS sy-vline 
WA_MC29S_STR-LABOR sy-vline 
WA_MC29S_STR-LAEDA sy-vline 
WA_MC29S_STR-LGPRO sy-vline 
WA_MC29S_STR-LOEVM sy-vline 
WA_MC29S_STR-MAKTX sy-vline 
WA_MC29S_STR-MATNR sy-vline 
WA_MC29S_STR-MBRSH sy-vline 
WA_MC29S_STR-MEINS sy-vline 
WA_MC29S_STR-MISKZ sy-vline 
WA_MC29S_STR-MTART sy-vline 
WA_MC29S_STR-NFMAT sy-vline 
WA_MC29S_STR-NORMT sy-vline 
WA_MC29S_STR-NTGEW sy-vline 
WA_MC29S_STR-PEINH sy-vline 
WA_MC29S_STR-PLIFZ sy-vline 
WA_MC29S_STR-SBDKZ sy-vline 
WA_MC29S_STR-BWTTY sy-vline 
WA_MC29S_STR-XCHAR sy-vline 
WA_MC29S_STR-XCHPF sy-vline 
WA_MC29S_STR-MMSTA sy-vline 
WA_MC29S_STR-MMSTD sy-vline 
WA_MC29S_STR-RUEZT sy-vline 
WA_MC29S_STR-STPRS sy-vline 
WA_MC29S_STR-TRANZ sy-vline 
WA_MC29S_STR-UMREN sy-vline 
WA_MC29S_STR-UMREZ sy-vline 
WA_MC29S_STR-VERPR sy-vline 
WA_MC29S_STR-VOLEH sy-vline 
WA_MC29S_STR-VOLUM sy-vline 
WA_MC29S_STR-VPRSV sy-vline 
WA_MC29S_STR-VPSTA sy-vline 
WA_MC29S_STR-MATKL sy-vline 
WA_MC29S_STR-WEBAZ sy-vline 
WA_MC29S_STR-WRKST sy-vline 
WA_MC29S_STR-ZEIAR sy-vline 
WA_MC29S_STR-ZEIFO sy-vline 
WA_MC29S_STR-ZEINR sy-vline 
WA_MC29S_STR-ZEIVR sy-vline 
WA_MC29S_STR-WERKS sy-vline 
WA_MC29S_STR-DSTLK sy-vline 
WA_MC29S_STR-DSTLP sy-vline 
WA_MC29S_STR-SOBSL sy-vline 
WA_MC29S_STR-RGEKZ sy-vline 
WA_MC29S_STR-KZDKZ sy-vline 
WA_MC29S_STR-KZREV sy-vline 
WA_MC29S_STR-KZKFG sy-vline 
WA_MC29S_STR-CUOBJ sy-vline 
WA_MC29S_STR-STDPD sy-vline 
WA_MC29S_STR-SOBSK sy-vline 
WA_MC29S_STR-KZKUP sy-vline 
WA_MC29S_STR-SCHGT sy-vline 
WA_MC29S_STR-EPRIO sy-vline 
WA_MC29S_STR-STAWN sy-vline 
WA_MC29S_STR-PREFE sy-vline 
WA_MC29S_STR-PRENE sy-vline 
WA_MC29S_STR-KZECH sy-vline 
WA_MC29S_STR-SERNP sy-vline 
WA_MC29S_STR-MTVFP sy-vline 
WA_MC29S_STR-KZBED sy-vline 
WA_MC29S_STR-KZWSM sy-vline 
WA_MC29S_STR-PRCTR sy-vline 
WA_MC29S_STR-SERLV sy-vline 
WA_MC29S_STR-ATTYP sy-vline 
WA_MC29S_STR-VSPVB sy-vline 
WA_MC29S_STR-KZEFF sy-vline 
WA_MC29S_STR-FXPRU sy-vline 
WA_MC29S_STR-APOKZ sy-vline 
WA_MC29S_STR-AHDIS sy-vline 
WA_MC29S_STR-USEQU sy-vline 
WA_MC29S_STR-MSTAE sy-vline 
WA_MC29S_STR-MSTDE sy-vline 
WA_MC29S_STR-BFLME sy-vline      INTO ld_text SEPARATED BY SPACE.

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