ABAP Select data from SAP table DIIRLO into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP DIIRLO 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 DIIRLO. 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 DIIRLO 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_DIIRLO TYPE STANDARD TABLE OF DIIRLO,
      WA_DIIRLO TYPE DIIRLO,
      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: <DIIRLO> TYPE DIIRLO.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DIIRLO
*  INTO TABLE @DATA(IT_DIIRLO2).
*--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_DIIRLO INDEX 1 INTO DATA(WA_DIIRLO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DIIRLO>-TRPNR = 1.
<DIIRLO>-SPRAS = 1.
<DIIRLO>-PLTXT = 1.
<DIIRLO>-TPLKZ = 1.
<DIIRLO>-TRPMA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DIIRLO-LVORM, sy-vline,
  WA_DIIRLO-SUBMT, sy-vline,
  WA_DIIRLO-MAPAR, sy-vline,
  WA_DIIRLO-IEQUI, sy-vline,
  WA_DIIRLO-EINZL, sy-vline,
  WA_DIIRLO-RLTYP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DIIRLO 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_DIIRLO 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_DIIRLO INTO WA_DIIRLO.


*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 SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_DIIRLO-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DIIRLO-SPRAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field SUBMT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_DIIRLO-SUBMT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DIIRLO-SUBMT.
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_DIIRLO_STR, 
TRPNR TYPE STRING,
SPRAS TYPE STRING,
PLTXT TYPE STRING,
TPLKZ TYPE STRING,
TRPMA TYPE STRING,
LVORM TYPE STRING,
SUBMT TYPE STRING,
MAPAR TYPE STRING,
IEQUI TYPE STRING,
EINZL TYPE STRING,
RLTYP TYPE STRING,
ERDAT TYPE STRING,
ERNAM TYPE STRING,
AEDAT TYPE STRING,
AENAM TYPE STRING,
BEGRU TYPE STRING,
IWERK TYPE STRING,
INGRP TYPE STRING,
RBNR TYPE STRING,
ABCKZ TYPE STRING,
GEWRK TYPE STRING,
STTXT TYPE STRING,
USTXT TYPE STRING,
OBJNR TYPE STRING,
KZLTX TYPE STRING,
SUBMTKTX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DIIRLO_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_DIIRLO_STR-TRPNR sy-vline 
WA_DIIRLO_STR-SPRAS sy-vline 
WA_DIIRLO_STR-PLTXT sy-vline 
WA_DIIRLO_STR-TPLKZ sy-vline 
WA_DIIRLO_STR-TRPMA sy-vline 
WA_DIIRLO_STR-LVORM sy-vline 
WA_DIIRLO_STR-SUBMT sy-vline 
WA_DIIRLO_STR-MAPAR sy-vline 
WA_DIIRLO_STR-IEQUI sy-vline 
WA_DIIRLO_STR-EINZL sy-vline 
WA_DIIRLO_STR-RLTYP sy-vline 
WA_DIIRLO_STR-ERDAT sy-vline 
WA_DIIRLO_STR-ERNAM sy-vline 
WA_DIIRLO_STR-AEDAT sy-vline 
WA_DIIRLO_STR-AENAM sy-vline 
WA_DIIRLO_STR-BEGRU sy-vline 
WA_DIIRLO_STR-IWERK sy-vline 
WA_DIIRLO_STR-INGRP sy-vline 
WA_DIIRLO_STR-RBNR sy-vline 
WA_DIIRLO_STR-ABCKZ sy-vline 
WA_DIIRLO_STR-GEWRK sy-vline 
WA_DIIRLO_STR-STTXT sy-vline 
WA_DIIRLO_STR-USTXT sy-vline 
WA_DIIRLO_STR-OBJNR sy-vline 
WA_DIIRLO_STR-KZLTX sy-vline 
WA_DIIRLO_STR-SUBMTKTX sy-vline      INTO ld_text SEPARATED BY SPACE.

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