ABAP Select data from SAP table WMS_MIGO_0100 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP WMS_MIGO_0100 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 WMS_MIGO_0100. 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 WMS_MIGO_0100 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_WMS_MIGO_0100 TYPE STANDARD TABLE OF WMS_MIGO_0100,
      WA_WMS_MIGO_0100 TYPE WMS_MIGO_0100,
      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: <WMS_MIGO_0100> TYPE WMS_MIGO_0100.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_WMS_MIGO_0100.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM WMS_MIGO_0100
  INTO TABLE IT_WMS_MIGO_0100.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WMS_MIGO_0100
*  INTO TABLE @DATA(IT_WMS_MIGO_01002).
*--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_WMS_MIGO_0100 INDEX 1 INTO DATA(WA_WMS_MIGO_01002).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_WMS_MIGO_0100 ASSIGNING <WMS_MIGO_0100>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WMS_MIGO_0100>-MATNR = 1.
<WMS_MIGO_0100>-ERFME = 1.
<WMS_MIGO_0100>-VERMG = 1.
<WMS_MIGO_0100>-OFFMG = 1.
<WMS_MIGO_0100>-ANZL1 = 1.

ENDLOOP.

LOOP AT IT_WMS_MIGO_0100 INTO WA_WMS_MIGO_0100.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WMS_MIGO_0100-ANZL2, sy-vline,
  WA_WMS_MIGO_0100-LMEN1, sy-vline,
  WA_WMS_MIGO_0100-LMEN2, sy-vline,
  WA_WMS_MIGO_0100-LETY1, sy-vline,
  WA_WMS_MIGO_0100-LETY2, sy-vline,
  WA_WMS_MIGO_0100-TBFKZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WMS_MIGO_0100 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_WMS_MIGO_0100 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_WMS_MIGO_0100 INTO WA_WMS_MIGO_0100.


*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_WMS_MIGO_0100-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WMS_MIGO_0100-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ERFME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WMS_MIGO_0100-ERFME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WMS_MIGO_0100-ERFME.
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_WMS_MIGO_0100_STR, 
MATNR TYPE STRING,
ERFME TYPE STRING,
VERMG TYPE STRING,
OFFMG TYPE STRING,
ANZL1 TYPE STRING,
ANZL2 TYPE STRING,
LMEN1 TYPE STRING,
LMEN2 TYPE STRING,
LETY1 TYPE STRING,
LETY2 TYPE STRING,
TBFKZ TYPE STRING,
BSSKZ TYPE STRING,
LGNUM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WMS_MIGO_0100_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_WMS_MIGO_0100_STR-MATNR sy-vline 
WA_WMS_MIGO_0100_STR-ERFME sy-vline 
WA_WMS_MIGO_0100_STR-VERMG sy-vline 
WA_WMS_MIGO_0100_STR-OFFMG sy-vline 
WA_WMS_MIGO_0100_STR-ANZL1 sy-vline 
WA_WMS_MIGO_0100_STR-ANZL2 sy-vline 
WA_WMS_MIGO_0100_STR-LMEN1 sy-vline 
WA_WMS_MIGO_0100_STR-LMEN2 sy-vline 
WA_WMS_MIGO_0100_STR-LETY1 sy-vline 
WA_WMS_MIGO_0100_STR-LETY2 sy-vline 
WA_WMS_MIGO_0100_STR-TBFKZ sy-vline 
WA_WMS_MIGO_0100_STR-BSSKZ sy-vline 
WA_WMS_MIGO_0100_STR-LGNUM sy-vline      INTO ld_text SEPARATED BY SPACE.

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