ABAP Select data from SAP table DMC_MM_S_MIG_OBJ_TRANS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DMC_MM_S_MIG_OBJ_TRANS
*  INTO TABLE @DATA(IT_DMC_MM_S_MIG_OBJ_TRANS2).
*--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_DMC_MM_S_MIG_OBJ_TRANS INDEX 1 INTO DATA(WA_DMC_MM_S_MIG_OBJ_TRANS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DMC_MM_S_MIG_OBJ_TRANS>-COBJ_GUID = 1.
<DMC_MM_S_MIG_OBJ_TRANS>-MT_TABLE = 1.
<DMC_MM_S_MIG_OBJ_TRANS>-ID = 1.
<DMC_MM_S_MIG_OBJ_TRANS>-TABNAME = 1.
<DMC_MM_S_MIG_OBJ_TRANS>-FAILED = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DMC_MM_S_MIG_OBJ_TRANS-IN_PROCESS, sy-vline,
  WA_DMC_MM_S_MIG_OBJ_TRANS-DEFINED, sy-vline,
  WA_DMC_MM_S_MIG_OBJ_TRANS-GENERATED, sy-vline,
  WA_DMC_MM_S_MIG_OBJ_TRANS-CALCULATED, sy-vline,
  WA_DMC_MM_S_MIG_OBJ_TRANS-ACCESS_PLAN_TYPE, sy-vline,
  WA_DMC_MM_S_MIG_OBJ_TRANS-LOADED, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DMC_MM_S_MIG_OBJ_TRANS 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_DMC_MM_S_MIG_OBJ_TRANS 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_DMC_MM_S_MIG_OBJ_TRANS INTO WA_DMC_MM_S_MIG_OBJ_TRANS.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_DMC_MM_S_MIG_OBJ_TRANS_STR, 
COBJ_GUID TYPE STRING,
MT_TABLE TYPE STRING,
ID TYPE STRING,
TABNAME TYPE STRING,
FAILED TYPE STRING,
IN_PROCESS TYPE STRING,
DEFINED TYPE STRING,
GENERATED TYPE STRING,
CALCULATED TYPE STRING,
ACCESS_PLAN_TYPE TYPE STRING,
LOADED TYPE STRING,
TABCLASS TYPE STRING,
SQLTAB TYPE STRING,
CONTFLAG TYPE STRING,
WRITE_BEHAVIOUR TYPE STRING,
COBJ_GUID TYPE STRING,
TARGET_TAB TYPE STRING,
SEQNUM TYPE STRING,
BLOCKSIZE TYPE STRING,
SEGMENT_SIZE TYPE STRING,
SEARCH_DEPTH TYPE STRING,
SIZE_CAT TYPE STRING,
SELPAR TYPE STRING,
READING_TYPE TYPE STRING,
MAX_PORTION_ACPL TYPE STRING,
TABLE_MAX_PARALL TYPE STRING,
BLOCK_PROC_STEP TYPE STRING,
TABLE_SIZE TYPE STRING,
DESCR TYPE STRING,
IDENT TYPE STRING,
ACTIVITY TYPE STRING,
CONN_TYPE TYPE STRING,
UNPROCESSED_DATA TYPE STRING,
DEPENDING_MIG_OBJS TYPE STRING,
PROCESSING_MODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DMC_MM_S_MIG_OBJ_TRANS_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_DMC_MM_S_MIG_OBJ_TRANS_STR-COBJ_GUID sy-vline 
WA_DMC_MM_S_MIG_OBJ_TRANS_STR-MT_TABLE sy-vline 
WA_DMC_MM_S_MIG_OBJ_TRANS_STR-ID sy-vline 
WA_DMC_MM_S_MIG_OBJ_TRANS_STR-TABNAME sy-vline 
WA_DMC_MM_S_MIG_OBJ_TRANS_STR-FAILED sy-vline 
WA_DMC_MM_S_MIG_OBJ_TRANS_STR-IN_PROCESS sy-vline 
WA_DMC_MM_S_MIG_OBJ_TRANS_STR-DEFINED sy-vline 
WA_DMC_MM_S_MIG_OBJ_TRANS_STR-GENERATED sy-vline 
WA_DMC_MM_S_MIG_OBJ_TRANS_STR-CALCULATED sy-vline 
WA_DMC_MM_S_MIG_OBJ_TRANS_STR-ACCESS_PLAN_TYPE sy-vline 
WA_DMC_MM_S_MIG_OBJ_TRANS_STR-LOADED sy-vline 
WA_DMC_MM_S_MIG_OBJ_TRANS_STR-TABCLASS sy-vline 
WA_DMC_MM_S_MIG_OBJ_TRANS_STR-SQLTAB sy-vline 
WA_DMC_MM_S_MIG_OBJ_TRANS_STR-CONTFLAG sy-vline 
WA_DMC_MM_S_MIG_OBJ_TRANS_STR-WRITE_BEHAVIOUR sy-vline 
WA_DMC_MM_S_MIG_OBJ_TRANS_STR-COBJ_GUID sy-vline 
WA_DMC_MM_S_MIG_OBJ_TRANS_STR-TARGET_TAB sy-vline 
WA_DMC_MM_S_MIG_OBJ_TRANS_STR-SEQNUM sy-vline 
WA_DMC_MM_S_MIG_OBJ_TRANS_STR-BLOCKSIZE sy-vline 
WA_DMC_MM_S_MIG_OBJ_TRANS_STR-SEGMENT_SIZE sy-vline 
WA_DMC_MM_S_MIG_OBJ_TRANS_STR-SEARCH_DEPTH sy-vline 
WA_DMC_MM_S_MIG_OBJ_TRANS_STR-SIZE_CAT sy-vline 
WA_DMC_MM_S_MIG_OBJ_TRANS_STR-SELPAR sy-vline 
WA_DMC_MM_S_MIG_OBJ_TRANS_STR-READING_TYPE sy-vline 
WA_DMC_MM_S_MIG_OBJ_TRANS_STR-MAX_PORTION_ACPL sy-vline 
WA_DMC_MM_S_MIG_OBJ_TRANS_STR-TABLE_MAX_PARALL sy-vline 
WA_DMC_MM_S_MIG_OBJ_TRANS_STR-BLOCK_PROC_STEP sy-vline 
WA_DMC_MM_S_MIG_OBJ_TRANS_STR-TABLE_SIZE sy-vline 
WA_DMC_MM_S_MIG_OBJ_TRANS_STR-DESCR sy-vline 
WA_DMC_MM_S_MIG_OBJ_TRANS_STR-IDENT sy-vline 
WA_DMC_MM_S_MIG_OBJ_TRANS_STR-ACTIVITY sy-vline 
WA_DMC_MM_S_MIG_OBJ_TRANS_STR-CONN_TYPE sy-vline 
WA_DMC_MM_S_MIG_OBJ_TRANS_STR-UNPROCESSED_DATA sy-vline 
WA_DMC_MM_S_MIG_OBJ_TRANS_STR-DEPENDING_MIG_OBJS sy-vline 
WA_DMC_MM_S_MIG_OBJ_TRANS_STR-PROCESSING_MODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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