ABAP Select data from SAP table EHSWAS_MDINTO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EHSWAS_MDINTO
*  INTO TABLE @DATA(IT_EHSWAS_MDINTO2).
*--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_EHSWAS_MDINTO INDEX 1 INTO DATA(WA_EHSWAS_MDINTO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EHSWAS_MDINTO>-MANDT = 1.
<EHSWAS_MDINTO>-BUKRS = 1.
<EHSWAS_MDINTO>-WERKS = 1.
<EHSWAS_MDINTO>-KOKRS = 1.
<EHSWAS_MDINTO>-KOSTL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EHSWAS_MDINTO-AUFNR, sy-vline,
  WA_EHSWAS_MDINTO-LIFNR, sy-vline,
  WA_EHSWAS_MDINTO-KUNNR, sy-vline,
  WA_EHSWAS_MDINTO-LGORT, sy-vline,
  WA_EHSWAS_MDINTO-WERKLGORT, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_EHSWAS_MDINTO 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_EHSWAS_MDINTO 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_EHSWAS_MDINTO INTO WA_EHSWAS_MDINTO.


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

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

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

*Conversion exit ALPHA, internal->external for field KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EHSWAS_MDINTO-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHSWAS_MDINTO-KUNNR.
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_EHSWAS_MDINTO_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
WERKS TYPE STRING,
KOKRS TYPE STRING,
KOSTL TYPE STRING,
AUFNR TYPE STRING,
LIFNR TYPE STRING,
KUNNR TYPE STRING,
LGORT TYPE STRING,
WERKLGORT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EHSWAS_MDINTO_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_EHSWAS_MDINTO_STR-MANDT sy-vline 
WA_EHSWAS_MDINTO_STR-BUKRS sy-vline 
WA_EHSWAS_MDINTO_STR-WERKS sy-vline 
WA_EHSWAS_MDINTO_STR-KOKRS sy-vline 
WA_EHSWAS_MDINTO_STR-KOSTL sy-vline 
WA_EHSWAS_MDINTO_STR-AUFNR sy-vline 
WA_EHSWAS_MDINTO_STR-LIFNR sy-vline 
WA_EHSWAS_MDINTO_STR-KUNNR sy-vline 
WA_EHSWAS_MDINTO_STR-LGORT sy-vline 
WA_EHSWAS_MDINTO_STR-WERKLGORT sy-vline      INTO ld_text SEPARATED BY SPACE.

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