ABAP Select data from SAP table SLCM_WF_VH into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SLCM_WF_VH
*  INTO TABLE @DATA(IT_SLCM_WF_VH2).
*--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_SLCM_WF_VH INDEX 1 INTO DATA(WA_SLCM_WF_VH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SLCM_WF_VH>-MANDT = 1.
<SLCM_WF_VH>-LGLCNTNTMWORKFLOWWORKF = 1.
<SLCM_WF_VH>-LGLCNTNTMWRKFLWUSERPICKER = 1.
<SLCM_WF_VH>-LGLCNTNTMGOVLAW = 1.
<SLCM_WF_VH>-LGLCNTNTMCATEGORY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SLCM_WF_VH-LGLTRANSACCESSLVL, sy-vline,
  WA_SLCM_WF_VH-LGLCNTNTMMAINORGCOCODE, sy-vline,
  WA_SLCM_WF_VH-LGLCNTNTMMAINORGPURORG, sy-vline,
  WA_SLCM_WF_VH-LGLCNTNTMMAINORGSALESORG, sy-vline,
  WA_SLCM_WF_VH-LGLCNTNTMDOCCONTENTTYPE, sy-vline,
  WA_SLCM_WF_VH-LGLCNTNTMLANGUAGE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SLCM_WF_VH 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_SLCM_WF_VH 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_SLCM_WF_VH INTO WA_SLCM_WF_VH.


*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 ISOLA, internal->external for field LGLCNTNTMLANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_SLCM_WF_VH-LGLCNTNTMLANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SLCM_WF_VH-LGLCNTNTMLANGUAGE.
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_SLCM_WF_VH_STR, 
MANDT TYPE STRING,
LGLCNTNTMWORKFLOWWORKF TYPE STRING,
LGLCNTNTMWRKFLWUSERPICKER TYPE STRING,
LGLCNTNTMGOVLAW TYPE STRING,
LGLCNTNTMCATEGORY TYPE STRING,
LGLTRANSACCESSLVL TYPE STRING,
LGLCNTNTMMAINORGCOCODE TYPE STRING,
LGLCNTNTMMAINORGPURORG TYPE STRING,
LGLCNTNTMMAINORGSALESORG TYPE STRING,
LGLCNTNTMDOCCONTENTTYPE TYPE STRING,
LGLCNTNTMLANGUAGE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SLCM_WF_VH_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_SLCM_WF_VH_STR-MANDT sy-vline 
WA_SLCM_WF_VH_STR-LGLCNTNTMWORKFLOWWORKF sy-vline 
WA_SLCM_WF_VH_STR-LGLCNTNTMWRKFLWUSERPICKER sy-vline 
WA_SLCM_WF_VH_STR-LGLCNTNTMGOVLAW sy-vline 
WA_SLCM_WF_VH_STR-LGLCNTNTMCATEGORY sy-vline 
WA_SLCM_WF_VH_STR-LGLTRANSACCESSLVL sy-vline 
WA_SLCM_WF_VH_STR-LGLCNTNTMMAINORGCOCODE sy-vline 
WA_SLCM_WF_VH_STR-LGLCNTNTMMAINORGPURORG sy-vline 
WA_SLCM_WF_VH_STR-LGLCNTNTMMAINORGSALESORG sy-vline 
WA_SLCM_WF_VH_STR-LGLCNTNTMDOCCONTENTTYPE sy-vline 
WA_SLCM_WF_VH_STR-LGLCNTNTMLANGUAGE sy-vline      INTO ld_text SEPARATED BY SPACE.

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