ABAP Select data from SAP table PRSS_DLIEF into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PRSS_DLIEF
*  INTO TABLE @DATA(IT_PRSS_DLIEF2).
*--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_PRSS_DLIEF INDEX 1 INTO DATA(WA_PRSS_DLIEF2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PRSS_DLIEF>-MANDT = 1.
<PRSS_DLIEF>-DLINR = 1.
<PRSS_DLIEF>-DLIUS = 1.
<PRSS_DLIEF>-VBELN = 1.
<PRSS_DLIEF>-VBPOS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PRSS_DLIEF-IN_WTGBTR, sy-vline,
  WA_PRSS_DLIEF-IN_WOGBTR, sy-vline,
  WA_PRSS_DLIEF-IN_WKGBTR, sy-vline,
  WA_PRSS_DLIEF-IN_MEGBTR, sy-vline,
  WA_PRSS_DLIEF-TO_WTGBTR, sy-vline,
  WA_PRSS_DLIEF-TO_WOGBTR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PRSS_DLIEF 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_PRSS_DLIEF 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_PRSS_DLIEF INTO WA_PRSS_DLIEF.


*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_PRSS_DLIEF-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PRSS_DLIEF-VBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field PRS_MEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PRSS_DLIEF-PRS_MEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PRSS_DLIEF-PRS_MEINH.
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_PRSS_DLIEF_STR, 
MANDT TYPE STRING,
DLINR TYPE STRING,
DLIUS TYPE STRING,
VBELN TYPE STRING,
VBPOS TYPE STRING,
IN_WTGBTR TYPE STRING,
IN_WOGBTR TYPE STRING,
IN_WKGBTR TYPE STRING,
IN_MEGBTR TYPE STRING,
TO_WTGBTR TYPE STRING,
TO_WOGBTR TYPE STRING,
TO_WKGBTR TYPE STRING,
TO_MEGBTR TYPE STRING,
AUMOT TYPE STRING,
BEMOT TYPE STRING,
RETRO TYPE STRING,
DOPEN TYPE STRING,
TO_DATE TYPE STRING,
TIMESTMP TYPE STRING,
FKDAT_ACTIVE TYPE STRING,
FKDAT TYPE STRING,
PRS_MEGBTR TYPE STRING,
PRS_WKGBTR TYPE STRING,
PRS_WKGBTR_CURR TYPE STRING,
PRS_WOGBTR TYPE STRING,
PRS_WOGBTR_CURR TYPE STRING,
PRS_WTGBTR TYPE STRING,
PRS_WTGBTR_CURR TYPE STRING,
DLI_TEXT TYPE STRING,
PRS_MEINH TYPE STRING,
PRS_DOPEN TYPE STRING,
PRS_DLI_UPDKZ TYPE STRING,
PRS_DLI_HIST_UPDKZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PRSS_DLIEF_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_PRSS_DLIEF_STR-MANDT sy-vline 
WA_PRSS_DLIEF_STR-DLINR sy-vline 
WA_PRSS_DLIEF_STR-DLIUS sy-vline 
WA_PRSS_DLIEF_STR-VBELN sy-vline 
WA_PRSS_DLIEF_STR-VBPOS sy-vline 
WA_PRSS_DLIEF_STR-IN_WTGBTR sy-vline 
WA_PRSS_DLIEF_STR-IN_WOGBTR sy-vline 
WA_PRSS_DLIEF_STR-IN_WKGBTR sy-vline 
WA_PRSS_DLIEF_STR-IN_MEGBTR sy-vline 
WA_PRSS_DLIEF_STR-TO_WTGBTR sy-vline 
WA_PRSS_DLIEF_STR-TO_WOGBTR sy-vline 
WA_PRSS_DLIEF_STR-TO_WKGBTR sy-vline 
WA_PRSS_DLIEF_STR-TO_MEGBTR sy-vline 
WA_PRSS_DLIEF_STR-AUMOT sy-vline 
WA_PRSS_DLIEF_STR-BEMOT sy-vline 
WA_PRSS_DLIEF_STR-RETRO sy-vline 
WA_PRSS_DLIEF_STR-DOPEN sy-vline 
WA_PRSS_DLIEF_STR-TO_DATE sy-vline 
WA_PRSS_DLIEF_STR-TIMESTMP sy-vline 
WA_PRSS_DLIEF_STR-FKDAT_ACTIVE sy-vline 
WA_PRSS_DLIEF_STR-FKDAT sy-vline 
WA_PRSS_DLIEF_STR-PRS_MEGBTR sy-vline 
WA_PRSS_DLIEF_STR-PRS_WKGBTR sy-vline 
WA_PRSS_DLIEF_STR-PRS_WKGBTR_CURR sy-vline 
WA_PRSS_DLIEF_STR-PRS_WOGBTR sy-vline 
WA_PRSS_DLIEF_STR-PRS_WOGBTR_CURR sy-vline 
WA_PRSS_DLIEF_STR-PRS_WTGBTR sy-vline 
WA_PRSS_DLIEF_STR-PRS_WTGBTR_CURR sy-vline 
WA_PRSS_DLIEF_STR-DLI_TEXT sy-vline 
WA_PRSS_DLIEF_STR-PRS_MEINH sy-vline 
WA_PRSS_DLIEF_STR-PRS_DOPEN sy-vline 
WA_PRSS_DLIEF_STR-PRS_DLI_UPDKZ sy-vline 
WA_PRSS_DLIEF_STR-PRS_DLI_HIST_UPDKZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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