ABAP Select data from SAP table REGUP_CORE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REGUP_CORE
*  INTO TABLE @DATA(IT_REGUP_CORE2).
*--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_REGUP_CORE INDEX 1 INTO DATA(WA_REGUP_CORE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REGUP_CORE>-MANDT = 1.
<REGUP_CORE>-ZBUKR = 1.
<REGUP_CORE>-LIFNR = 1.
<REGUP_CORE>-KUNNR = 1.
<REGUP_CORE>-EMPFG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REGUP_CORE-VBLNR, sy-vline,
  WA_REGUP_CORE-BUKRS, sy-vline,
  WA_REGUP_CORE-BELNR, sy-vline,
  WA_REGUP_CORE-GJAHR, sy-vline,
  WA_REGUP_CORE-BUZEI, sy-vline,
  WA_REGUP_CORE-WAERS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REGUP_CORE 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_REGUP_CORE 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_REGUP_CORE INTO WA_REGUP_CORE.


*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_REGUP_CORE-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REGUP_CORE-LIFNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_REGUP_CORE-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REGUP_CORE-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ESRRE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REGUP_CORE-ESRRE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REGUP_CORE-ESRRE.
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_REGUP_CORE_STR, 
MANDT TYPE STRING,
ZBUKR TYPE STRING,
LIFNR TYPE STRING,
KUNNR TYPE STRING,
EMPFG TYPE STRING,
VBLNR TYPE STRING,
BUKRS TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
BUZEI TYPE STRING,
WAERS TYPE STRING,
XBLNR TYPE STRING,
BUDAT TYPE STRING,
BLDAT TYPE STRING,
SHKZG TYPE STRING,
DMBTR TYPE STRING,
WRBTR TYPE STRING,
SKNTO TYPE STRING,
WSKTO TYPE STRING,
QBSHH TYPE STRING,
QSSHB TYPE STRING,
QBSHB TYPE STRING,
SGTXT TYPE STRING,
ZTERM TYPE STRING,
ZBDXT TYPE STRING,
ZBDXP TYPE STRING,
LZBKZ TYPE STRING,
LANDL TYPE STRING,
DIEKZ TYPE STRING,
STCEG TYPE STRING,
ESRNR TYPE STRING,
ESRRE TYPE STRING,
ESRPZ TYPE STRING,
KIDNO TYPE STRING,
PSWSL TYPE STRING,
PSWBT TYPE STRING,
PSSKT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REGUP_CORE_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_REGUP_CORE_STR-MANDT sy-vline 
WA_REGUP_CORE_STR-ZBUKR sy-vline 
WA_REGUP_CORE_STR-LIFNR sy-vline 
WA_REGUP_CORE_STR-KUNNR sy-vline 
WA_REGUP_CORE_STR-EMPFG sy-vline 
WA_REGUP_CORE_STR-VBLNR sy-vline 
WA_REGUP_CORE_STR-BUKRS sy-vline 
WA_REGUP_CORE_STR-BELNR sy-vline 
WA_REGUP_CORE_STR-GJAHR sy-vline 
WA_REGUP_CORE_STR-BUZEI sy-vline 
WA_REGUP_CORE_STR-WAERS sy-vline 
WA_REGUP_CORE_STR-XBLNR sy-vline 
WA_REGUP_CORE_STR-BUDAT sy-vline 
WA_REGUP_CORE_STR-BLDAT sy-vline 
WA_REGUP_CORE_STR-SHKZG sy-vline 
WA_REGUP_CORE_STR-DMBTR sy-vline 
WA_REGUP_CORE_STR-WRBTR sy-vline 
WA_REGUP_CORE_STR-SKNTO sy-vline 
WA_REGUP_CORE_STR-WSKTO sy-vline 
WA_REGUP_CORE_STR-QBSHH sy-vline 
WA_REGUP_CORE_STR-QSSHB sy-vline 
WA_REGUP_CORE_STR-QBSHB sy-vline 
WA_REGUP_CORE_STR-SGTXT sy-vline 
WA_REGUP_CORE_STR-ZTERM sy-vline 
WA_REGUP_CORE_STR-ZBDXT sy-vline 
WA_REGUP_CORE_STR-ZBDXP sy-vline 
WA_REGUP_CORE_STR-LZBKZ sy-vline 
WA_REGUP_CORE_STR-LANDL sy-vline 
WA_REGUP_CORE_STR-DIEKZ sy-vline 
WA_REGUP_CORE_STR-STCEG sy-vline 
WA_REGUP_CORE_STR-ESRNR sy-vline 
WA_REGUP_CORE_STR-ESRRE sy-vline 
WA_REGUP_CORE_STR-ESRPZ sy-vline 
WA_REGUP_CORE_STR-KIDNO sy-vline 
WA_REGUP_CORE_STR-PSWSL sy-vline 
WA_REGUP_CORE_STR-PSWBT sy-vline 
WA_REGUP_CORE_STR-PSSKT sy-vline      INTO ld_text SEPARATED BY SPACE.

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