ABAP Select data from SAP table WRF_BUDG_KEY_DATA_STY into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP WRF_BUDG_KEY_DATA_STY 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_BUDG_KEY_DATA_STY. 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_BUDG_KEY_DATA_STY 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_BUDG_KEY_DATA_STY TYPE STANDARD TABLE OF WRF_BUDG_KEY_DATA_STY,
      WA_WRF_BUDG_KEY_DATA_STY TYPE WRF_BUDG_KEY_DATA_STY,
      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_BUDG_KEY_DATA_STY> TYPE WRF_BUDG_KEY_DATA_STY.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WRF_BUDG_KEY_DATA_STY
*  INTO TABLE @DATA(IT_WRF_BUDG_KEY_DATA_STY2).
*--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_BUDG_KEY_DATA_STY INDEX 1 INTO DATA(WA_WRF_BUDG_KEY_DATA_STY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WRF_BUDG_KEY_DATA_STY>-PERIOD = 1.
<WRF_BUDG_KEY_DATA_STY>-DATE_FROM = 1.
<WRF_BUDG_KEY_DATA_STY>-DATE_TO = 1.
<WRF_BUDG_KEY_DATA_STY>-MATKL = 1.
<WRF_BUDG_KEY_DATA_STY>-SAIS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WRF_BUDG_KEY_DATA_STY-SIGN, sy-vline,
  WA_WRF_BUDG_KEY_DATA_STY-OPTION, sy-vline,
  WA_WRF_BUDG_KEY_DATA_STY-LOW_SAISO, sy-vline,
  WA_WRF_BUDG_KEY_DATA_STY-HIGH_SAISO, sy-vline,
  WA_WRF_BUDG_KEY_DATA_STY-LOW_SAISJ, sy-vline,
  WA_WRF_BUDG_KEY_DATA_STY-HIGH_SAISJ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WRF_BUDG_KEY_DATA_STY 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_BUDG_KEY_DATA_STY 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_BUDG_KEY_DATA_STY INTO WA_WRF_BUDG_KEY_DATA_STY.


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

*Conversion exit GJAHR, internal->external for field HIGH_SAISJ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_WRF_BUDG_KEY_DATA_STY-HIGH_SAISJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRF_BUDG_KEY_DATA_STY-HIGH_SAISJ.
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_BUDG_KEY_DATA_STY_STR, 
PERIOD TYPE STRING,
DATE_FROM TYPE STRING,
DATE_TO TYPE STRING,
MATKL TYPE STRING,
SAIS TYPE STRING,
SIGN TYPE STRING,
OPTION TYPE STRING,
LOW_SAISO TYPE STRING,
HIGH_SAISO TYPE STRING,
LOW_SAISJ TYPE STRING,
HIGH_SAISJ TYPE STRING,
SAITY TYPE STRING,
SIGN TYPE STRING,
OPTION TYPE STRING,
LOW TYPE STRING,
HIGH TYPE STRING,
PLGTP TYPE STRING,
SIGN TYPE STRING,
OPTION TYPE STRING,
LOW TYPE STRING,
HIGH TYPE STRING,
BUKRS TYPE STRING,
SIGN TYPE STRING,
OPTION TYPE STRING,
LOW TYPE STRING,
HIGH TYPE STRING,
EKORG TYPE STRING,
SIGN TYPE STRING,
OPTION TYPE STRING,
LOW TYPE STRING,
HIGH TYPE STRING,
EKGRP TYPE STRING,
SIGN TYPE STRING,
OPTION TYPE STRING,
LOW TYPE STRING,
HIGH TYPE STRING,
WERK TYPE STRING,
SIGN TYPE STRING,
OPTION TYPE STRING,
LOW TYPE STRING,
HIGH TYPE STRING,
VLFKZ TYPE STRING,
LAND1 TYPE STRING,
SIGN TYPE STRING,
OPTION TYPE STRING,
LOW TYPE STRING,
HIGH TYPE STRING,
REGIO TYPE STRING,
SIGN TYPE STRING,
OPTION TYPE STRING,
LOW TYPE STRING,
HIGH TYPE STRING,
COUNC TYPE STRING,
SIGN TYPE STRING,
OPTION TYPE STRING,
LOW TYPE STRING,
HIGH TYPE STRING,
CITYC TYPE STRING,
SIGN TYPE STRING,
OPTION TYPE STRING,
LOW TYPE STRING,
HIGH TYPE STRING,
BZIRK TYPE STRING,
SIGN TYPE STRING,
OPTION TYPE STRING,
LOW TYPE STRING,
HIGH TYPE STRING,
HIEID TYPE STRING,
NODE01 TYPE STRING,
NODE02 TYPE STRING,
NODE03 TYPE STRING,
NODE04 TYPE STRING,
NODE05 TYPE STRING,
NODE06 TYPE STRING,
NODE07 TYPE STRING,
NODE08 TYPE STRING,
NODE09 TYPE STRING,
NODE10 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WRF_BUDG_KEY_DATA_STY_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_BUDG_KEY_DATA_STY_STR-PERIOD sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-DATE_FROM sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-DATE_TO sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-MATKL sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-SAIS sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-SIGN sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-OPTION sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-LOW_SAISO sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-HIGH_SAISO sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-LOW_SAISJ sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-HIGH_SAISJ sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-SAITY sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-SIGN sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-OPTION sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-LOW sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-HIGH sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-PLGTP sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-SIGN sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-OPTION sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-LOW sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-HIGH sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-BUKRS sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-SIGN sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-OPTION sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-LOW sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-HIGH sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-EKORG sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-SIGN sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-OPTION sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-LOW sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-HIGH sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-EKGRP sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-SIGN sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-OPTION sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-LOW sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-HIGH sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-WERK sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-SIGN sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-OPTION sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-LOW sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-HIGH sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-VLFKZ sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-LAND1 sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-SIGN sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-OPTION sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-LOW sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-HIGH sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-REGIO sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-SIGN sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-OPTION sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-LOW sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-HIGH sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-COUNC sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-SIGN sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-OPTION sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-LOW sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-HIGH sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-CITYC sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-SIGN sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-OPTION sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-LOW sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-HIGH sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-BZIRK sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-SIGN sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-OPTION sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-LOW sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-HIGH sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-HIEID sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-NODE01 sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-NODE02 sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-NODE03 sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-NODE04 sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-NODE05 sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-NODE06 sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-NODE07 sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-NODE08 sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-NODE09 sy-vline 
WA_WRF_BUDG_KEY_DATA_STY_STR-NODE10 sy-vline      INTO ld_text SEPARATED BY SPACE.

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