ABAP Select data from SAP table TDS_SDOC_STAFFING into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TDS_SDOC_STAFFING
*  INTO TABLE @DATA(IT_TDS_SDOC_STAFFING2).
*--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_TDS_SDOC_STAFFING INDEX 1 INTO DATA(WA_TDS_SDOC_STAFFING2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TDS_SDOC_STAFFING>-VBELN = 1.
<TDS_SDOC_STAFFING>-VKORG = 1.
<TDS_SDOC_STAFFING>-VTWEG = 1.
<TDS_SDOC_STAFFING>-SPART = 1.
<TDS_SDOC_STAFFING>-VKBUR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TDS_SDOC_STAFFING-VKGRP, sy-vline,
  WA_TDS_SDOC_STAFFING-ERNAM, sy-vline,
  WA_TDS_SDOC_STAFFING-ERDAT, sy-vline,
  WA_TDS_SDOC_STAFFING-KUNNR, sy-vline,
  WA_TDS_SDOC_STAFFING-WAERK, sy-vline,
  WA_TDS_SDOC_STAFFING-STAFSTAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TDS_SDOC_STAFFING 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_TDS_SDOC_STAFFING 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_TDS_SDOC_STAFFING INTO WA_TDS_SDOC_STAFFING.


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

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

*Conversion exit AUART, internal->external for field AUART
CALL FUNCTION 'CONVERSION_EXIT_AUART_OUTPUT'
  EXPORTING
    input =                      WA_TDS_SDOC_STAFFING-AUART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TDS_SDOC_STAFFING-AUART.
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_TDS_SDOC_STAFFING_STR, 
VBELN TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
VKBUR TYPE STRING,
VKGRP TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,
KUNNR TYPE STRING,
WAERK TYPE STRING,
STAFSTAT TYPE STRING,
NETWR TYPE STRING,
AUART TYPE STRING,
TRVOG TYPE STRING,
FKSAK TYPE STRING,
KUNNAM TYPE STRING,
STAFFING_STAGE TYPE STRING,
STAFFING_STAGE_DESC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TDS_SDOC_STAFFING_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_TDS_SDOC_STAFFING_STR-VBELN sy-vline 
WA_TDS_SDOC_STAFFING_STR-VKORG sy-vline 
WA_TDS_SDOC_STAFFING_STR-VTWEG sy-vline 
WA_TDS_SDOC_STAFFING_STR-SPART sy-vline 
WA_TDS_SDOC_STAFFING_STR-VKBUR sy-vline 
WA_TDS_SDOC_STAFFING_STR-VKGRP sy-vline 
WA_TDS_SDOC_STAFFING_STR-ERNAM sy-vline 
WA_TDS_SDOC_STAFFING_STR-ERDAT sy-vline 
WA_TDS_SDOC_STAFFING_STR-KUNNR sy-vline 
WA_TDS_SDOC_STAFFING_STR-WAERK sy-vline 
WA_TDS_SDOC_STAFFING_STR-STAFSTAT sy-vline 
WA_TDS_SDOC_STAFFING_STR-NETWR sy-vline 
WA_TDS_SDOC_STAFFING_STR-AUART sy-vline 
WA_TDS_SDOC_STAFFING_STR-TRVOG sy-vline 
WA_TDS_SDOC_STAFFING_STR-FKSAK sy-vline 
WA_TDS_SDOC_STAFFING_STR-KUNNAM sy-vline 
WA_TDS_SDOC_STAFFING_STR-STAFFING_STAGE sy-vline 
WA_TDS_SDOC_STAFFING_STR-STAFFING_STAGE_DESC sy-vline      INTO ld_text SEPARATED BY SPACE.

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