ABAP Select data from SAP table ROXALN0051 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ROXALN0051 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 ROXALN0051. 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 ROXALN0051 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_ROXALN0051 TYPE STANDARD TABLE OF ROXALN0051,
      WA_ROXALN0051 TYPE ROXALN0051,
      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: <ROXALN0051> TYPE ROXALN0051.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ROXALN0051.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ROXALN0051
  INTO TABLE IT_ROXALN0051.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ROXALN0051
*  INTO TABLE @DATA(IT_ROXALN00512).
*--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_ROXALN0051 INDEX 1 INTO DATA(WA_ROXALN00512).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ROXALN0051 ASSIGNING <ROXALN0051>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ROXALN0051>-MANDT = 1.
<ROXALN0051>-BUKRS = 1.
<ROXALN0051>-GSART = 1.
<ROXALN0051>-STATU = 1.
<ROXALN0051>-AUSWA = 1.

ENDLOOP.

LOOP AT IT_ROXALN0051 INTO WA_ROXALN0051.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ROXALN0051-BUHAL, sy-vline,
  WA_ROXALN0051-MUSTE, sy-vline,
  WA_ROXALN0051-FREIG, sy-vline,
  WA_ROXALN0051-STARM, sy-vline,
  WA_ROXALN0051-FDUPD, sy-vline,
  WA_ROXALN0051-GENA1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ROXALN0051 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_ROXALN0051 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_ROXALN0051 INTO WA_ROXALN0051.


*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_ROXALN0051_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
GSART TYPE STRING,
STATU TYPE STRING,
AUSWA TYPE STRING,
BUHAL TYPE STRING,
MUSTE TYPE STRING,
FREIG TYPE STRING,
STARM TYPE STRING,
FDUPD TYPE STRING,
GENA1 TYPE STRING,
GENA2 TYPE STRING,
GENB1 TYPE STRING,
GENB2 TYPE STRING,
SBEWART TYPE STRING,
INTEB TYPE STRING,
UNTGRN TYPE STRING,
SCFGEN TYPE STRING,
JAUSW TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ROXALN0051_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_ROXALN0051_STR-MANDT sy-vline 
WA_ROXALN0051_STR-BUKRS sy-vline 
WA_ROXALN0051_STR-GSART sy-vline 
WA_ROXALN0051_STR-STATU sy-vline 
WA_ROXALN0051_STR-AUSWA sy-vline 
WA_ROXALN0051_STR-BUHAL sy-vline 
WA_ROXALN0051_STR-MUSTE sy-vline 
WA_ROXALN0051_STR-FREIG sy-vline 
WA_ROXALN0051_STR-STARM sy-vline 
WA_ROXALN0051_STR-FDUPD sy-vline 
WA_ROXALN0051_STR-GENA1 sy-vline 
WA_ROXALN0051_STR-GENA2 sy-vline 
WA_ROXALN0051_STR-GENB1 sy-vline 
WA_ROXALN0051_STR-GENB2 sy-vline 
WA_ROXALN0051_STR-SBEWART sy-vline 
WA_ROXALN0051_STR-INTEB sy-vline 
WA_ROXALN0051_STR-UNTGRN sy-vline 
WA_ROXALN0051_STR-SCFGEN sy-vline 
WA_ROXALN0051_STR-JAUSW sy-vline      INTO ld_text SEPARATED BY SPACE.

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