ABAP Select data from SAP table MDM_DISTR_TS_AA_OBJCHP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MDM_DISTR_TS_AA_OBJCHP
*  INTO TABLE @DATA(IT_MDM_DISTR_TS_AA_OBJCHP2).
*--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_MDM_DISTR_TS_AA_OBJCHP INDEX 1 INTO DATA(WA_MDM_DISTR_TS_AA_OBJCHP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MDM_DISTR_TS_AA_OBJCHP>-OBJECT_TYPE = 1.
<MDM_DISTR_TS_AA_OBJCHP>-SCHEME_ID = 1.
<MDM_DISTR_TS_AA_OBJCHP>-OBJECT_KEY = 1.
<MDM_DISTR_TS_AA_OBJCHP>-MANDT = 1.
<MDM_DISTR_TS_AA_OBJCHP>-CPIDENT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MDM_DISTR_TS_AA_OBJCHP-TABNAME, sy-vline,
  WA_MDM_DISTR_TS_AA_OBJCHP-TABKEY, sy-vline,
  WA_MDM_DISTR_TS_AA_OBJCHP-FLDNAME, sy-vline,
  WA_MDM_DISTR_TS_AA_OBJCHP-CRETIME, sy-vline,
  WA_MDM_DISTR_TS_AA_OBJCHP-ACTTIME, sy-vline,
  WA_MDM_DISTR_TS_AA_OBJCHP-USRNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MDM_DISTR_TS_AA_OBJCHP 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_MDM_DISTR_TS_AA_OBJCHP 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_MDM_DISTR_TS_AA_OBJCHP INTO WA_MDM_DISTR_TS_AA_OBJCHP.


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

*Conversion exit ALPHA, internal->external for field CDCHGNO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MDM_DISTR_TS_AA_OBJCHP-CDCHGNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MDM_DISTR_TS_AA_OBJCHP-CDCHGNO.
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_MDM_DISTR_TS_AA_OBJCHP_STR, 
OBJECT_TYPE TYPE STRING,
SCHEME_ID TYPE STRING,
OBJECT_KEY TYPE STRING,
MANDT TYPE STRING,
CPIDENT TYPE STRING,
TABNAME TYPE STRING,
TABKEY TYPE STRING,
FLDNAME TYPE STRING,
CRETIME TYPE STRING,
ACTTIME TYPE STRING,
USRNAME TYPE STRING,
CDOBJCL TYPE STRING,
CDOBJID TYPE STRING,
CDCHGNO TYPE STRING,
CDCHGID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MDM_DISTR_TS_AA_OBJCHP_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_MDM_DISTR_TS_AA_OBJCHP_STR-OBJECT_TYPE sy-vline 
WA_MDM_DISTR_TS_AA_OBJCHP_STR-SCHEME_ID sy-vline 
WA_MDM_DISTR_TS_AA_OBJCHP_STR-OBJECT_KEY sy-vline 
WA_MDM_DISTR_TS_AA_OBJCHP_STR-MANDT sy-vline 
WA_MDM_DISTR_TS_AA_OBJCHP_STR-CPIDENT sy-vline 
WA_MDM_DISTR_TS_AA_OBJCHP_STR-TABNAME sy-vline 
WA_MDM_DISTR_TS_AA_OBJCHP_STR-TABKEY sy-vline 
WA_MDM_DISTR_TS_AA_OBJCHP_STR-FLDNAME sy-vline 
WA_MDM_DISTR_TS_AA_OBJCHP_STR-CRETIME sy-vline 
WA_MDM_DISTR_TS_AA_OBJCHP_STR-ACTTIME sy-vline 
WA_MDM_DISTR_TS_AA_OBJCHP_STR-USRNAME sy-vline 
WA_MDM_DISTR_TS_AA_OBJCHP_STR-CDOBJCL sy-vline 
WA_MDM_DISTR_TS_AA_OBJCHP_STR-CDOBJID sy-vline 
WA_MDM_DISTR_TS_AA_OBJCHP_STR-CDCHGNO sy-vline 
WA_MDM_DISTR_TS_AA_OBJCHP_STR-CDCHGID sy-vline      INTO ld_text SEPARATED BY SPACE.

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