ABAP Select data from SAP table RLRLB_ITEM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RLRLB_ITEM
*  INTO TABLE @DATA(IT_RLRLB_ITEM2).
*--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_RLRLB_ITEM INDEX 1 INTO DATA(WA_RLRLB_ITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RLRLB_ITEM>-TBPOS = 1.
<RLRLB_ITEM>-MATNR = 1.
<RLRLB_ITEM>-WERKS = 1.
<RLRLB_ITEM>-CHARG = 1.
<RLRLB_ITEM>-BESTQ = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RLRLB_ITEM-SOBKZ, sy-vline,
  WA_RLRLB_ITEM-LSONR_SONUM, sy-vline,
  WA_RLRLB_ITEM-LSONR, sy-vline,
  WA_RLRLB_ITEM-SONUM, sy-vline,
  WA_RLRLB_ITEM-MENGA, sy-vline,
  WA_RLRLB_ITEM-TAMEA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RLRLB_ITEM 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_RLRLB_ITEM 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_RLRLB_ITEM INTO WA_RLRLB_ITEM.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_RLRLB_ITEM-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RLRLB_ITEM-MATNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RLRLB_ITEM-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RLRLB_ITEM-MEINS.
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_RLRLB_ITEM_STR, 
TBPOS TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
CHARG TYPE STRING,
BESTQ TYPE STRING,
SOBKZ TYPE STRING,
LSONR_SONUM TYPE STRING,
LSONR TYPE STRING,
SONUM TYPE STRING,
MENGA TYPE STRING,
TAMEA TYPE STRING,
ALTME TYPE STRING,
ELIKZ TYPE STRING,
TBNUM TYPE STRING,
LGNUM TYPE STRING,
STATU TYPE STRING,
BZEIT TYPE STRING,
BWART TYPE STRING,
NLTYP TYPE STRING,
NLPLA TYPE STRING,
PDATU TYPE STRING,
MBLNR TYPE STRING,
TANUM TYPE STRING,
TDATU TYPE STRING,
BNAME TYPE STRING,
TBKTX TYPE STRING,
VKDYN TYPE STRING,
NKDYN TYPE STRING,
PZEIT TYPE STRING,
MJAHR TYPE STRING,
ANZPS TYPE STRING,
GEWEI TYPE STRING,
KLFR2 TYPE STRING,
KFAR2 TYPE STRING,
TBRUE TYPE STRING,
RSNUM TYPE STRING,
LZNUM TYPE STRING,
AUTTA TYPE STRING,
BDART TYPE STRING,
PKPOS TYPE STRING,
DIRTA TYPE STRING,
KBNKZ TYPE STRING,
MENGE TYPE STRING,
UMREZ TYPE STRING,
UMREN TYPE STRING,
TAMEN TYPE STRING,
AOFTA TYPE STRING,
AGSTA TYPE STRING,
TZEIT TYPE STRING,
WEMPF TYPE STRING,
ABLAD TYPE STRING,
MBPOS TYPE STRING,
WDATU TYPE STRING,
ZEUGN TYPE STRING,
BRGEW TYPE STRING,
QPLOS TYPE STRING,
RSPOS TYPE STRING,
VFDAT TYPE STRING,
ANZL1 TYPE STRING,
ANZL2 TYPE STRING,
LMEN1 TYPE STRING,
LMEN2 TYPE STRING,
LETY1 TYPE STRING,
LETY2 TYPE STRING,
QPLOA TYPE STRING,
RSART TYPE STRING,
KZECH TYPE STRING,
LGORT TYPE STRING,
L2SKR TYPE STRING,
KZFME TYPE STRING,
MEINS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RLRLB_ITEM_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_RLRLB_ITEM_STR-TBPOS sy-vline 
WA_RLRLB_ITEM_STR-MATNR sy-vline 
WA_RLRLB_ITEM_STR-WERKS sy-vline 
WA_RLRLB_ITEM_STR-CHARG sy-vline 
WA_RLRLB_ITEM_STR-BESTQ sy-vline 
WA_RLRLB_ITEM_STR-SOBKZ sy-vline 
WA_RLRLB_ITEM_STR-LSONR_SONUM sy-vline 
WA_RLRLB_ITEM_STR-LSONR sy-vline 
WA_RLRLB_ITEM_STR-SONUM sy-vline 
WA_RLRLB_ITEM_STR-MENGA sy-vline 
WA_RLRLB_ITEM_STR-TAMEA sy-vline 
WA_RLRLB_ITEM_STR-ALTME sy-vline 
WA_RLRLB_ITEM_STR-ELIKZ sy-vline 
WA_RLRLB_ITEM_STR-TBNUM sy-vline 
WA_RLRLB_ITEM_STR-LGNUM sy-vline 
WA_RLRLB_ITEM_STR-STATU sy-vline 
WA_RLRLB_ITEM_STR-BZEIT sy-vline 
WA_RLRLB_ITEM_STR-BWART sy-vline 
WA_RLRLB_ITEM_STR-NLTYP sy-vline 
WA_RLRLB_ITEM_STR-NLPLA sy-vline 
WA_RLRLB_ITEM_STR-PDATU sy-vline 
WA_RLRLB_ITEM_STR-MBLNR sy-vline 
WA_RLRLB_ITEM_STR-TANUM sy-vline 
WA_RLRLB_ITEM_STR-TDATU sy-vline 
WA_RLRLB_ITEM_STR-BNAME sy-vline 
WA_RLRLB_ITEM_STR-TBKTX sy-vline 
WA_RLRLB_ITEM_STR-VKDYN sy-vline 
WA_RLRLB_ITEM_STR-NKDYN sy-vline 
WA_RLRLB_ITEM_STR-PZEIT sy-vline 
WA_RLRLB_ITEM_STR-MJAHR sy-vline 
WA_RLRLB_ITEM_STR-ANZPS sy-vline 
WA_RLRLB_ITEM_STR-GEWEI sy-vline 
WA_RLRLB_ITEM_STR-KLFR2 sy-vline 
WA_RLRLB_ITEM_STR-KFAR2 sy-vline 
WA_RLRLB_ITEM_STR-TBRUE sy-vline 
WA_RLRLB_ITEM_STR-RSNUM sy-vline 
WA_RLRLB_ITEM_STR-LZNUM sy-vline 
WA_RLRLB_ITEM_STR-AUTTA sy-vline 
WA_RLRLB_ITEM_STR-BDART sy-vline 
WA_RLRLB_ITEM_STR-PKPOS sy-vline 
WA_RLRLB_ITEM_STR-DIRTA sy-vline 
WA_RLRLB_ITEM_STR-KBNKZ sy-vline 
WA_RLRLB_ITEM_STR-MENGE sy-vline 
WA_RLRLB_ITEM_STR-UMREZ sy-vline 
WA_RLRLB_ITEM_STR-UMREN sy-vline 
WA_RLRLB_ITEM_STR-TAMEN sy-vline 
WA_RLRLB_ITEM_STR-AOFTA sy-vline 
WA_RLRLB_ITEM_STR-AGSTA sy-vline 
WA_RLRLB_ITEM_STR-TZEIT sy-vline 
WA_RLRLB_ITEM_STR-WEMPF sy-vline 
WA_RLRLB_ITEM_STR-ABLAD sy-vline 
WA_RLRLB_ITEM_STR-MBPOS sy-vline 
WA_RLRLB_ITEM_STR-WDATU sy-vline 
WA_RLRLB_ITEM_STR-ZEUGN sy-vline 
WA_RLRLB_ITEM_STR-BRGEW sy-vline 
WA_RLRLB_ITEM_STR-QPLOS sy-vline 
WA_RLRLB_ITEM_STR-RSPOS sy-vline 
WA_RLRLB_ITEM_STR-VFDAT sy-vline 
WA_RLRLB_ITEM_STR-ANZL1 sy-vline 
WA_RLRLB_ITEM_STR-ANZL2 sy-vline 
WA_RLRLB_ITEM_STR-LMEN1 sy-vline 
WA_RLRLB_ITEM_STR-LMEN2 sy-vline 
WA_RLRLB_ITEM_STR-LETY1 sy-vline 
WA_RLRLB_ITEM_STR-LETY2 sy-vline 
WA_RLRLB_ITEM_STR-QPLOA sy-vline 
WA_RLRLB_ITEM_STR-RSART sy-vline 
WA_RLRLB_ITEM_STR-KZECH sy-vline 
WA_RLRLB_ITEM_STR-LGORT sy-vline 
WA_RLRLB_ITEM_STR-L2SKR sy-vline 
WA_RLRLB_ITEM_STR-KZFME sy-vline 
WA_RLRLB_ITEM_STR-MEINS sy-vline      INTO ld_text SEPARATED BY SPACE.

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