ABAP Select data from SAP table WFCS_MARC_VIEW_DATA_MDST into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WFCS_MARC_VIEW_DATA_MDST
*  INTO TABLE @DATA(IT_WFCS_MARC_VIEW_DATA_MDST2).
*--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_WFCS_MARC_VIEW_DATA_MDST INDEX 1 INTO DATA(WA_WFCS_MARC_VIEW_DATA_MDST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WFCS_MARC_VIEW_DATA_MDST>-PSTAT = 1.
<WFCS_MARC_VIEW_DATA_MDST>-MMSTA = 1.
<WFCS_MARC_VIEW_DATA_MDST>-MMSTD = 1.
<WFCS_MARC_VIEW_DATA_MDST>-DISMM = 1.
<WFCS_MARC_VIEW_DATA_MDST>-PLIFZ = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WFCS_MARC_VIEW_DATA_MDST-WEBAZ, sy-vline,
  WA_WFCS_MARC_VIEW_DATA_MDST-BESKZ, sy-vline,
  WA_WFCS_MARC_VIEW_DATA_MDST-MINBE, sy-vline,
  WA_WFCS_MARC_VIEW_DATA_MDST-EISBE, sy-vline,
  WA_WFCS_MARC_VIEW_DATA_MDST-BSTMI, sy-vline,
  WA_WFCS_MARC_VIEW_DATA_MDST-BSTMA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WFCS_MARC_VIEW_DATA_MDST 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_WFCS_MARC_VIEW_DATA_MDST 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_WFCS_MARC_VIEW_DATA_MDST INTO WA_WFCS_MARC_VIEW_DATA_MDST.


*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 VRBMT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WFCS_MARC_VIEW_DATA_MDST-VRBMT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WFCS_MARC_VIEW_DATA_MDST-VRBMT.
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_WFCS_MARC_VIEW_DATA_MDST_STR, 
PSTAT TYPE STRING,
MMSTA TYPE STRING,
MMSTD TYPE STRING,
DISMM TYPE STRING,
PLIFZ TYPE STRING,
WEBAZ TYPE STRING,
BESKZ TYPE STRING,
MINBE TYPE STRING,
EISBE TYPE STRING,
BSTMI TYPE STRING,
BSTMA TYPE STRING,
BSTFE TYPE STRING,
MABST TYPE STRING,
FHORI TYPE STRING,
BEARZ TYPE STRING,
RUEZT TYPE STRING,
TRANZ TYPE STRING,
BASMG TYPE STRING,
DZEIT TYPE STRING,
VRBMT TYPE STRING,
VRBWK TYPE STRING,
VRBDT TYPE STRING,
VRBFK TYPE STRING,
AUTRU TYPE STRING,
KZAGL TYPE STRING,
EISLO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WFCS_MARC_VIEW_DATA_MDST_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_WFCS_MARC_VIEW_DATA_MDST_STR-PSTAT sy-vline 
WA_WFCS_MARC_VIEW_DATA_MDST_STR-MMSTA sy-vline 
WA_WFCS_MARC_VIEW_DATA_MDST_STR-MMSTD sy-vline 
WA_WFCS_MARC_VIEW_DATA_MDST_STR-DISMM sy-vline 
WA_WFCS_MARC_VIEW_DATA_MDST_STR-PLIFZ sy-vline 
WA_WFCS_MARC_VIEW_DATA_MDST_STR-WEBAZ sy-vline 
WA_WFCS_MARC_VIEW_DATA_MDST_STR-BESKZ sy-vline 
WA_WFCS_MARC_VIEW_DATA_MDST_STR-MINBE sy-vline 
WA_WFCS_MARC_VIEW_DATA_MDST_STR-EISBE sy-vline 
WA_WFCS_MARC_VIEW_DATA_MDST_STR-BSTMI sy-vline 
WA_WFCS_MARC_VIEW_DATA_MDST_STR-BSTMA sy-vline 
WA_WFCS_MARC_VIEW_DATA_MDST_STR-BSTFE sy-vline 
WA_WFCS_MARC_VIEW_DATA_MDST_STR-MABST sy-vline 
WA_WFCS_MARC_VIEW_DATA_MDST_STR-FHORI sy-vline 
WA_WFCS_MARC_VIEW_DATA_MDST_STR-BEARZ sy-vline 
WA_WFCS_MARC_VIEW_DATA_MDST_STR-RUEZT sy-vline 
WA_WFCS_MARC_VIEW_DATA_MDST_STR-TRANZ sy-vline 
WA_WFCS_MARC_VIEW_DATA_MDST_STR-BASMG sy-vline 
WA_WFCS_MARC_VIEW_DATA_MDST_STR-DZEIT sy-vline 
WA_WFCS_MARC_VIEW_DATA_MDST_STR-VRBMT sy-vline 
WA_WFCS_MARC_VIEW_DATA_MDST_STR-VRBWK sy-vline 
WA_WFCS_MARC_VIEW_DATA_MDST_STR-VRBDT sy-vline 
WA_WFCS_MARC_VIEW_DATA_MDST_STR-VRBFK sy-vline 
WA_WFCS_MARC_VIEW_DATA_MDST_STR-AUTRU sy-vline 
WA_WFCS_MARC_VIEW_DATA_MDST_STR-KZAGL sy-vline 
WA_WFCS_MARC_VIEW_DATA_MDST_STR-EISLO sy-vline      INTO ld_text SEPARATED BY SPACE.

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