ABAP Select data from SAP table WRF_PSCD_DLHD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WRF_PSCD_DLHD
*  INTO TABLE @DATA(IT_WRF_PSCD_DLHD2).
*--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_WRF_PSCD_DLHD INDEX 1 INTO DATA(WA_WRF_PSCD_DLHD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WRF_PSCD_DLHD>-MANDT = 1.
<WRF_PSCD_DLHD>-DL_ID = 1.
<WRF_PSCD_DLHD>-TC_ID_EXT = 1.
<WRF_PSCD_DLHD>-TC_MODE_EXT = 1.
<WRF_PSCD_DLHD>-TCNAME_EXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WRF_PSCD_DLHD-TOLERANCE_EXT, sy-vline,
  WA_WRF_PSCD_DLHD-TC_ID_INT, sy-vline,
  WA_WRF_PSCD_DLHD-TC_MODE_INT, sy-vline,
  WA_WRF_PSCD_DLHD-TCNAME_INT, sy-vline,
  WA_WRF_PSCD_DLHD-TOLERANCE_INT, sy-vline,
  WA_WRF_PSCD_DLHD-LIFNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WRF_PSCD_DLHD 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_WRF_PSCD_DLHD 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_WRF_PSCD_DLHD INTO WA_WRF_PSCD_DLHD.


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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WRF_PSCD_DLHD-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRF_PSCD_DLHD-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field REF_MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WRF_PSCD_DLHD-REF_MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRF_PSCD_DLHD-REF_MATNR.
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_WRF_PSCD_DLHD_STR, 
MANDT TYPE STRING,
DL_ID TYPE STRING,
TC_ID_EXT TYPE STRING,
TC_MODE_EXT TYPE STRING,
TCNAME_EXT TYPE STRING,
TOLERANCE_EXT TYPE STRING,
TC_ID_INT TYPE STRING,
TC_MODE_INT TYPE STRING,
TCNAME_INT TYPE STRING,
TOLERANCE_INT TYPE STRING,
LIFNR TYPE STRING,
MATNR TYPE STRING,
STORE TYPE STRING,
DISTR_CENTER TYPE STRING,
INCOTERM1 TYPE STRING,
INCOTERM2 TYPE STRING,
HANDOVER_DATE_ID TYPE STRING,
HANDOVER_DATE TYPE STRING,
HANDOVER_COUNTRY TYPE STRING,
HANDOVER_CITY TYPE STRING,
EKORG TYPE STRING,
REF_MATNR TYPE STRING,
UPTYP TYPE STRING,
ORDER_CYCLE_DC TYPE STRING,
DEL_CYCLE_DC TYPE STRING,
ORDER_CYCLE_ST TYPE STRING,
DEL_CYCLE_ST TYPE STRING,
CAL_VENDOR TYPE STRING,
CAL_DC TYPE STRING,
CAL_STORE TYPE STRING,
LTSNR TYPE STRING,
INCOTERMS2L TYPE STRING,
INCOTERMS3L TYPE STRING,
TIMESTAMP TYPE STRING,
UNAME TYPE STRING,
PROGRAMM TYPE STRING,
_DATAAGING TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WRF_PSCD_DLHD_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_WRF_PSCD_DLHD_STR-MANDT sy-vline 
WA_WRF_PSCD_DLHD_STR-DL_ID sy-vline 
WA_WRF_PSCD_DLHD_STR-TC_ID_EXT sy-vline 
WA_WRF_PSCD_DLHD_STR-TC_MODE_EXT sy-vline 
WA_WRF_PSCD_DLHD_STR-TCNAME_EXT sy-vline 
WA_WRF_PSCD_DLHD_STR-TOLERANCE_EXT sy-vline 
WA_WRF_PSCD_DLHD_STR-TC_ID_INT sy-vline 
WA_WRF_PSCD_DLHD_STR-TC_MODE_INT sy-vline 
WA_WRF_PSCD_DLHD_STR-TCNAME_INT sy-vline 
WA_WRF_PSCD_DLHD_STR-TOLERANCE_INT sy-vline 
WA_WRF_PSCD_DLHD_STR-LIFNR sy-vline 
WA_WRF_PSCD_DLHD_STR-MATNR sy-vline 
WA_WRF_PSCD_DLHD_STR-STORE sy-vline 
WA_WRF_PSCD_DLHD_STR-DISTR_CENTER sy-vline 
WA_WRF_PSCD_DLHD_STR-INCOTERM1 sy-vline 
WA_WRF_PSCD_DLHD_STR-INCOTERM2 sy-vline 
WA_WRF_PSCD_DLHD_STR-HANDOVER_DATE_ID sy-vline 
WA_WRF_PSCD_DLHD_STR-HANDOVER_DATE sy-vline 
WA_WRF_PSCD_DLHD_STR-HANDOVER_COUNTRY sy-vline 
WA_WRF_PSCD_DLHD_STR-HANDOVER_CITY sy-vline 
WA_WRF_PSCD_DLHD_STR-EKORG sy-vline 
WA_WRF_PSCD_DLHD_STR-REF_MATNR sy-vline 
WA_WRF_PSCD_DLHD_STR-UPTYP sy-vline 
WA_WRF_PSCD_DLHD_STR-ORDER_CYCLE_DC sy-vline 
WA_WRF_PSCD_DLHD_STR-DEL_CYCLE_DC sy-vline 
WA_WRF_PSCD_DLHD_STR-ORDER_CYCLE_ST sy-vline 
WA_WRF_PSCD_DLHD_STR-DEL_CYCLE_ST sy-vline 
WA_WRF_PSCD_DLHD_STR-CAL_VENDOR sy-vline 
WA_WRF_PSCD_DLHD_STR-CAL_DC sy-vline 
WA_WRF_PSCD_DLHD_STR-CAL_STORE sy-vline 
WA_WRF_PSCD_DLHD_STR-LTSNR sy-vline 
WA_WRF_PSCD_DLHD_STR-INCOTERMS2L sy-vline 
WA_WRF_PSCD_DLHD_STR-INCOTERMS3L sy-vline 
WA_WRF_PSCD_DLHD_STR-TIMESTAMP sy-vline 
WA_WRF_PSCD_DLHD_STR-UNAME sy-vline 
WA_WRF_PSCD_DLHD_STR-PROGRAMM sy-vline 
WA_WRF_PSCD_DLHD_STR-_DATAAGING sy-vline      INTO ld_text SEPARATED BY SPACE.

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