ABAP Select data from SAP table RL03Q into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RL03Q 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 RL03Q. 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 RL03Q 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_RL03Q TYPE STANDARD TABLE OF RL03Q,
      WA_RL03Q TYPE RL03Q,
      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: <RL03Q> TYPE RL03Q.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RL03Q.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RL03Q
  INTO TABLE IT_RL03Q.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RL03Q
*  INTO TABLE @DATA(IT_RL03Q2).
*--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_RL03Q INDEX 1 INTO DATA(WA_RL03Q2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RL03Q ASSIGNING <RL03Q>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RL03Q>-ANZLE = 1.
<RL03Q>-MENGL = 1.
<RL03Q>-MENGE = 1.
<RL03Q>-ALTME = 1.
<RL03Q>-LETYP = 1.

ENDLOOP.

LOOP AT IT_RL03Q INTO WA_RL03Q.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RL03Q-PRTYP, sy-vline,
  WA_RL03Q-PRPLA, sy-vline,
  WA_RL03Q-STAWE, sy-vline,
  WA_RL03Q-STAPR, sy-vline,
  WA_RL03Q-STNOT, sy-vline,
  WA_RL03Q-TBIGN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RL03Q 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_RL03Q 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_RL03Q INTO WA_RL03Q.


*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 CUNIT, internal->external for field ALTME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RL03Q-ALTME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RL03Q-ALTME.
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_RL03Q_STR, 
ANZLE TYPE STRING,
MENGL TYPE STRING,
MENGE TYPE STRING,
ALTME TYPE STRING,
LETYP TYPE STRING,
PRTYP TYPE STRING,
PRPLA TYPE STRING,
STAWE TYPE STRING,
STAPR TYPE STRING,
STNOT TYPE STRING,
TBIGN TYPE STRING,
STIMA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RL03Q_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_RL03Q_STR-ANZLE sy-vline 
WA_RL03Q_STR-MENGL sy-vline 
WA_RL03Q_STR-MENGE sy-vline 
WA_RL03Q_STR-ALTME sy-vline 
WA_RL03Q_STR-LETYP sy-vline 
WA_RL03Q_STR-PRTYP sy-vline 
WA_RL03Q_STR-PRPLA sy-vline 
WA_RL03Q_STR-STAWE sy-vline 
WA_RL03Q_STR-STAPR sy-vline 
WA_RL03Q_STR-STNOT sy-vline 
WA_RL03Q_STR-TBIGN sy-vline 
WA_RL03Q_STR-STIMA sy-vline      INTO ld_text SEPARATED BY SPACE.

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