ABAP Select data from SAP table RL03A into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RL03A 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 RL03A. 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 RL03A 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_RL03A TYPE STANDARD TABLE OF RL03A,
      WA_RL03A TYPE RL03A,
      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: <RL03A> TYPE RL03A.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RL03A.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RL03A
  INTO TABLE IT_RL03A.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RL03A
*  INTO TABLE @DATA(IT_RL03A2).
*--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_RL03A INDEX 1 INTO DATA(WA_RL03A2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RL03A ASSIGNING <RL03A>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RL03A>-MULTA = 1.
<RL03A>-ANFME = 1.
<RL03A>-ANFML = 1.
<RL03A>-SQUIT = 1.
<RL03A>-VORGA = 1.

ENDLOOP.

LOOP AT IT_RL03A INTO WA_RL03A.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RL03A-NIDRU, sy-vline,
  WA_RL03A-VERBU, sy-vline,
  WA_RL03A-PROTO, sy-vline,
  WA_RL03A-PISTA, sy-vline,
  WA_RL03A-PISTM, sy-vline,
  WA_RL03A-KZNUL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RL03A 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_RL03A 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_RL03A INTO WA_RL03A.


*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 VAMEI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RL03A-VAMEI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RL03A-VAMEI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field NAMEI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RL03A-NAMEI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RL03A-NAMEI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field RAMEI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RL03A-RAMEI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RL03A-RAMEI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RL03A-REFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RL03A-REFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field DVHLM
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_RL03A-DVHLM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RL03A-DVHLM.
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_RL03A_STR, 
MULTA TYPE STRING,
ANFME TYPE STRING,
ANFML TYPE STRING,
SQUIT TYPE STRING,
VORGA TYPE STRING,
NIDRU TYPE STRING,
VERBU TYPE STRING,
PROTO TYPE STRING,
PISTA TYPE STRING,
PISTM TYPE STRING,
KZNUL TYPE STRING,
DBNOT TYPE STRING,
KZUAP TYPE STRING,
TEILK TYPE STRING,
TBNUM TYPE STRING,
TBPOS TYPE STRING,
NOENQ TYPE STRING,
VAMEI TYPE STRING,
NAMEI TYPE STRING,
RAMEI TYPE STRING,
AUSLA TYPE STRING,
REFNR TYPE STRING,
IMART TYPE STRING,
WMSTA TYPE STRING,
MINWM TYPE STRING,
SOLKO TYPE STRING,
BECHA TYPE STRING,
TEIL2 TYPE STRING,
TEILD TYPE STRING,
NOSPL TYPE STRING,
KOMIM TYPE STRING,
KZFME TYPE STRING,
EINLM TYPE STRING,
TBELI TYPE STRING,
NLPLA2 TYPE STRING,
NPPOS2 TYPE STRING,
NKDYN2 TYPE STRING,
KZVEP TYPE STRING,
QUKNZ TYPE STRING,
DVHLM TYPE STRING,
NDNEW TYPE STRING,
KZBEF TYPE STRING,
ITAB_INDEX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RL03A_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_RL03A_STR-MULTA sy-vline 
WA_RL03A_STR-ANFME sy-vline 
WA_RL03A_STR-ANFML sy-vline 
WA_RL03A_STR-SQUIT sy-vline 
WA_RL03A_STR-VORGA sy-vline 
WA_RL03A_STR-NIDRU sy-vline 
WA_RL03A_STR-VERBU sy-vline 
WA_RL03A_STR-PROTO sy-vline 
WA_RL03A_STR-PISTA sy-vline 
WA_RL03A_STR-PISTM sy-vline 
WA_RL03A_STR-KZNUL sy-vline 
WA_RL03A_STR-DBNOT sy-vline 
WA_RL03A_STR-KZUAP sy-vline 
WA_RL03A_STR-TEILK sy-vline 
WA_RL03A_STR-TBNUM sy-vline 
WA_RL03A_STR-TBPOS sy-vline 
WA_RL03A_STR-NOENQ sy-vline 
WA_RL03A_STR-VAMEI sy-vline 
WA_RL03A_STR-NAMEI sy-vline 
WA_RL03A_STR-RAMEI sy-vline 
WA_RL03A_STR-AUSLA sy-vline 
WA_RL03A_STR-REFNR sy-vline 
WA_RL03A_STR-IMART sy-vline 
WA_RL03A_STR-WMSTA sy-vline 
WA_RL03A_STR-MINWM sy-vline 
WA_RL03A_STR-SOLKO sy-vline 
WA_RL03A_STR-BECHA sy-vline 
WA_RL03A_STR-TEIL2 sy-vline 
WA_RL03A_STR-TEILD sy-vline 
WA_RL03A_STR-NOSPL sy-vline 
WA_RL03A_STR-KOMIM sy-vline 
WA_RL03A_STR-KZFME sy-vline 
WA_RL03A_STR-EINLM sy-vline 
WA_RL03A_STR-TBELI sy-vline 
WA_RL03A_STR-NLPLA2 sy-vline 
WA_RL03A_STR-NPPOS2 sy-vline 
WA_RL03A_STR-NKDYN2 sy-vline 
WA_RL03A_STR-KZVEP sy-vline 
WA_RL03A_STR-QUKNZ sy-vline 
WA_RL03A_STR-DVHLM sy-vline 
WA_RL03A_STR-NDNEW sy-vline 
WA_RL03A_STR-KZBEF sy-vline 
WA_RL03A_STR-ITAB_INDEX sy-vline      INTO ld_text SEPARATED BY SPACE.

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