ABAP Select data from SAP table BBP_MTCOM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BBP_MTCOM
*  INTO TABLE @DATA(IT_BBP_MTCOM2).
*--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_BBP_MTCOM INDEX 1 INTO DATA(WA_BBP_MTCOM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BBP_MTCOM>-KENNG = 1.
<BBP_MTCOM>-MATNR = 1.
<BBP_MTCOM>-BUKRS = 1.
<BBP_MTCOM>-WERKS = 1.
<BBP_MTCOM>-LGORT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BBP_MTCOM-CHARG, sy-vline,
  WA_BBP_MTCOM-LGNUM, sy-vline,
  WA_BBP_MTCOM-LGTYP, sy-vline,
  WA_BBP_MTCOM-MYKEY, sy-vline,
  WA_BBP_MTCOM-BWKEY, sy-vline,
  WA_BBP_MTCOM-BWTAR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BBP_MTCOM 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_BBP_MTCOM 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_BBP_MTCOM INTO WA_BBP_MTCOM.


*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 MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_BBP_MTCOM-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BBP_MTCOM-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_BBP_MTCOM-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BBP_MTCOM-SPRAS.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit ABPSP, internal->external for field PSPNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_BBP_MTCOM-PSPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BBP_MTCOM-PSPNR.
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_BBP_MTCOM_STR, 
KENNG TYPE STRING,
MATNR TYPE STRING,
BUKRS TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
CHARG TYPE STRING,
LGNUM TYPE STRING,
LGTYP TYPE STRING,
MYKEY TYPE STRING,
BWKEY TYPE STRING,
BWTAR TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPRAS TYPE STRING,
MEINH TYPE STRING,
PSTAT TYPE STRING,
XRUEJ TYPE STRING,
XRUEM TYPE STRING,
EKWSL TYPE STRING,
NOMUS TYPE STRING,
MTART TYPE STRING,
DISMM TYPE STRING,
DISLS TYPE STRING,
NOVOR TYPE STRING,
LIFNR TYPE STRING,
SOBKZ TYPE STRING,
BWTTY TYPE STRING,
ALAND TYPE STRING,
MMSTA TYPE STRING,
MSTAE TYPE STRING,
VMSTA TYPE STRING,
MSTAV TYPE STRING,
KZSPR TYPE STRING,
KZSPM TYPE STRING,
SPART TYPE STRING,
KZRFB TYPE STRING,
KUNNR TYPE STRING,
VBELN TYPE STRING,
POSNR TYPE STRING,
VERID TYPE STRING,
KZVPL TYPE STRING,
MAXTZ TYPE STRING,
PSPNR TYPE STRING,
SOBSL TYPE STRING,
XVKBW TYPE STRING,
KZISO TYPE STRING,
NOPLTRS TYPE STRING,
SAEXC TYPE STRING,
WVEXC TYPE STRING,
DATUM TYPE STRING,
T141_FELD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BBP_MTCOM_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_BBP_MTCOM_STR-KENNG sy-vline 
WA_BBP_MTCOM_STR-MATNR sy-vline 
WA_BBP_MTCOM_STR-BUKRS sy-vline 
WA_BBP_MTCOM_STR-WERKS sy-vline 
WA_BBP_MTCOM_STR-LGORT sy-vline 
WA_BBP_MTCOM_STR-CHARG sy-vline 
WA_BBP_MTCOM_STR-LGNUM sy-vline 
WA_BBP_MTCOM_STR-LGTYP sy-vline 
WA_BBP_MTCOM_STR-MYKEY sy-vline 
WA_BBP_MTCOM_STR-BWKEY sy-vline 
WA_BBP_MTCOM_STR-BWTAR sy-vline 
WA_BBP_MTCOM_STR-VKORG sy-vline 
WA_BBP_MTCOM_STR-VTWEG sy-vline 
WA_BBP_MTCOM_STR-SPRAS sy-vline 
WA_BBP_MTCOM_STR-MEINH sy-vline 
WA_BBP_MTCOM_STR-PSTAT sy-vline 
WA_BBP_MTCOM_STR-XRUEJ sy-vline 
WA_BBP_MTCOM_STR-XRUEM sy-vline 
WA_BBP_MTCOM_STR-EKWSL sy-vline 
WA_BBP_MTCOM_STR-NOMUS sy-vline 
WA_BBP_MTCOM_STR-MTART sy-vline 
WA_BBP_MTCOM_STR-DISMM sy-vline 
WA_BBP_MTCOM_STR-DISLS sy-vline 
WA_BBP_MTCOM_STR-NOVOR sy-vline 
WA_BBP_MTCOM_STR-LIFNR sy-vline 
WA_BBP_MTCOM_STR-SOBKZ sy-vline 
WA_BBP_MTCOM_STR-BWTTY sy-vline 
WA_BBP_MTCOM_STR-ALAND sy-vline 
WA_BBP_MTCOM_STR-MMSTA sy-vline 
WA_BBP_MTCOM_STR-MSTAE sy-vline 
WA_BBP_MTCOM_STR-VMSTA sy-vline 
WA_BBP_MTCOM_STR-MSTAV sy-vline 
WA_BBP_MTCOM_STR-KZSPR sy-vline 
WA_BBP_MTCOM_STR-KZSPM sy-vline 
WA_BBP_MTCOM_STR-SPART sy-vline 
WA_BBP_MTCOM_STR-KZRFB sy-vline 
WA_BBP_MTCOM_STR-KUNNR sy-vline 
WA_BBP_MTCOM_STR-VBELN sy-vline 
WA_BBP_MTCOM_STR-POSNR sy-vline 
WA_BBP_MTCOM_STR-VERID sy-vline 
WA_BBP_MTCOM_STR-KZVPL sy-vline 
WA_BBP_MTCOM_STR-MAXTZ sy-vline 
WA_BBP_MTCOM_STR-PSPNR sy-vline 
WA_BBP_MTCOM_STR-SOBSL sy-vline 
WA_BBP_MTCOM_STR-XVKBW sy-vline 
WA_BBP_MTCOM_STR-KZISO sy-vline 
WA_BBP_MTCOM_STR-NOPLTRS sy-vline 
WA_BBP_MTCOM_STR-SAEXC sy-vline 
WA_BBP_MTCOM_STR-WVEXC sy-vline 
WA_BBP_MTCOM_STR-DATUM sy-vline 
WA_BBP_MTCOM_STR-T141_FELD sy-vline      INTO ld_text SEPARATED BY SPACE.

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