ABAP Select data from SAP table REG72_D into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP REG72_D 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 REG72_D. 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 REG72_D 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_REG72_D TYPE STANDARD TABLE OF REG72_D,
      WA_REG72_D TYPE REG72_D,
      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: <REG72_D> TYPE REG72_D.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_REG72_D.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM REG72_D
  INTO TABLE IT_REG72_D.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REG72_D
*  INTO TABLE @DATA(IT_REG72_D2).
*--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_REG72_D INDEX 1 INTO DATA(WA_REG72_D2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_REG72_D ASSIGNING <REG72_D>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REG72_D>-MARK = 1.
<REG72_D>-DONE = 1.
<REG72_D>-ZUART_POS_ON_REG_LEVEL = 1.
<REG72_D>-INDEXNR = 1.
<REG72_D>-GERAET = 1.

ENDLOOP.

LOOP AT IT_REG72_D INTO WA_REG72_D.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REG72_D-GERTYP, sy-vline,
  WA_REG72_D-EQUNR, sy-vline,
  WA_REG72_D-GERAET2, sy-vline,
  WA_REG72_D-GERTYP2, sy-vline,
  WA_REG72_D-EQUNR2, sy-vline,
  WA_REG72_D-GUELTIG_ZW, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REG72_D 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_REG72_D 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_REG72_D INTO WA_REG72_D.


*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 GERNR, internal->external for field GERAET
CALL FUNCTION 'CONVERSION_EXIT_GERNR_OUTPUT'
  EXPORTING
    input =                      WA_REG72_D-GERAET
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REG72_D-GERAET.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field GERTYP
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_REG72_D-GERTYP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REG72_D-GERTYP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EQUNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REG72_D-EQUNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REG72_D-EQUNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GERNR, internal->external for field GERAET2
CALL FUNCTION 'CONVERSION_EXIT_GERNR_OUTPUT'
  EXPORTING
    input =                      WA_REG72_D-GERAET2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REG72_D-GERAET2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field GERTYP2
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_REG72_D-GERTYP2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REG72_D-GERTYP2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EQUNR2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REG72_D-EQUNR2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REG72_D-EQUNR2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DEVGRP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REG72_D-DEVGRP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REG72_D-DEVGRP.
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_REG72_D_STR, 
MARK TYPE STRING,
DONE TYPE STRING,
ZUART_POS_ON_REG_LEVEL TYPE STRING,
INDEXNR TYPE STRING,
GERAET TYPE STRING,
GERTYP TYPE STRING,
EQUNR TYPE STRING,
GERAET2 TYPE STRING,
GERTYP2 TYPE STRING,
EQUNR2 TYPE STRING,
GUELTIG_ZW TYPE STRING,
GUELTIG_ZT TYPE STRING,
MESSART TYPE STRING,
WANDART TYPE STRING,
DEVGRP TYPE STRING,
ZUARTEXT TYPE STRING,
ATTR_BEZ TYPE STRING,
GERTYPKZ TYPE STRING,
ERLAUBT TYPE STRING,
TRANSMIT_ABRFAKT TYPE STRING,
GERAET2_WARN_SEND TYPE STRING,
ABRFAKT_WARN_SEND TYPE STRING,
MANDT TYPE STRING,
LOGIKNR TYPE STRING,
BIS TYPE STRING,
ZUART TYPE STRING,
LOGIKNR2 TYPE STRING,
AB TYPE STRING,
MESSDRCK TYPE STRING,
PROGT TYPE STRING,
ATTRIBUT TYPE STRING,
ERDAT TYPE STRING,
ERNAM TYPE STRING,
AEDAT TYPE STRING,
AENAM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REG72_D_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_REG72_D_STR-MARK sy-vline 
WA_REG72_D_STR-DONE sy-vline 
WA_REG72_D_STR-ZUART_POS_ON_REG_LEVEL sy-vline 
WA_REG72_D_STR-INDEXNR sy-vline 
WA_REG72_D_STR-GERAET sy-vline 
WA_REG72_D_STR-GERTYP sy-vline 
WA_REG72_D_STR-EQUNR sy-vline 
WA_REG72_D_STR-GERAET2 sy-vline 
WA_REG72_D_STR-GERTYP2 sy-vline 
WA_REG72_D_STR-EQUNR2 sy-vline 
WA_REG72_D_STR-GUELTIG_ZW sy-vline 
WA_REG72_D_STR-GUELTIG_ZT sy-vline 
WA_REG72_D_STR-MESSART sy-vline 
WA_REG72_D_STR-WANDART sy-vline 
WA_REG72_D_STR-DEVGRP sy-vline 
WA_REG72_D_STR-ZUARTEXT sy-vline 
WA_REG72_D_STR-ATTR_BEZ sy-vline 
WA_REG72_D_STR-GERTYPKZ sy-vline 
WA_REG72_D_STR-ERLAUBT sy-vline 
WA_REG72_D_STR-TRANSMIT_ABRFAKT sy-vline 
WA_REG72_D_STR-GERAET2_WARN_SEND sy-vline 
WA_REG72_D_STR-ABRFAKT_WARN_SEND sy-vline 
WA_REG72_D_STR-MANDT sy-vline 
WA_REG72_D_STR-LOGIKNR sy-vline 
WA_REG72_D_STR-BIS sy-vline 
WA_REG72_D_STR-ZUART sy-vline 
WA_REG72_D_STR-LOGIKNR2 sy-vline 
WA_REG72_D_STR-AB sy-vline 
WA_REG72_D_STR-MESSDRCK sy-vline 
WA_REG72_D_STR-PROGT sy-vline 
WA_REG72_D_STR-ATTRIBUT sy-vline 
WA_REG72_D_STR-ERDAT sy-vline 
WA_REG72_D_STR-ERNAM sy-vline 
WA_REG72_D_STR-AEDAT sy-vline 
WA_REG72_D_STR-AENAM sy-vline      INTO ld_text SEPARATED BY SPACE.

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