ABAP Select data from SAP table RDBRA_REC_GENALT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RDBRA_REC_GENALT
*  INTO TABLE @DATA(IT_RDBRA_REC_GENALT2).
*--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_RDBRA_REC_GENALT INDEX 1 INTO DATA(WA_RDBRA_REC_GENALT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RDBRA_REC_GENALT>-MANDT = 1.
<RDBRA_REC_GENALT>-KEYDATE = 1.
<RDBRA_REC_GENALT>-RECORDNR = 1.
<RDBRA_REC_GENALT>-POSNR = 1.
<RDBRA_REC_GENALT>-VALUE01 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RDBRA_REC_GENALT-VALUE02, sy-vline,
  WA_RDBRA_REC_GENALT-VALUE03, sy-vline,
  WA_RDBRA_REC_GENALT-VALUE04, sy-vline,
  WA_RDBRA_REC_GENALT-VALUE05, sy-vline,
  WA_RDBRA_REC_GENALT-VALUE06, sy-vline,
  WA_RDBRA_REC_GENALT-VALUE07, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RDBRA_REC_GENALT 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_RDBRA_REC_GENALT 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_RDBRA_REC_GENALT INTO WA_RDBRA_REC_GENALT.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_RDBRA_REC_GENALT_STR, 
MANDT TYPE STRING,
KEYDATE TYPE STRING,
RECORDNR TYPE STRING,
POSNR TYPE STRING,
VALUE01 TYPE STRING,
VALUE02 TYPE STRING,
VALUE03 TYPE STRING,
VALUE04 TYPE STRING,
VALUE05 TYPE STRING,
VALUE06 TYPE STRING,
VALUE07 TYPE STRING,
VALUE08 TYPE STRING,
VALUE09 TYPE STRING,
VALUE10 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RDBRA_REC_GENALT_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_RDBRA_REC_GENALT_STR-MANDT sy-vline 
WA_RDBRA_REC_GENALT_STR-KEYDATE sy-vline 
WA_RDBRA_REC_GENALT_STR-RECORDNR sy-vline 
WA_RDBRA_REC_GENALT_STR-POSNR sy-vline 
WA_RDBRA_REC_GENALT_STR-VALUE01 sy-vline 
WA_RDBRA_REC_GENALT_STR-VALUE02 sy-vline 
WA_RDBRA_REC_GENALT_STR-VALUE03 sy-vline 
WA_RDBRA_REC_GENALT_STR-VALUE04 sy-vline 
WA_RDBRA_REC_GENALT_STR-VALUE05 sy-vline 
WA_RDBRA_REC_GENALT_STR-VALUE06 sy-vline 
WA_RDBRA_REC_GENALT_STR-VALUE07 sy-vline 
WA_RDBRA_REC_GENALT_STR-VALUE08 sy-vline 
WA_RDBRA_REC_GENALT_STR-VALUE09 sy-vline 
WA_RDBRA_REC_GENALT_STR-VALUE10 sy-vline      INTO ld_text SEPARATED BY SPACE.

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