ABAP Select data from SAP table RL030_UNIQUE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RL030_UNIQUE 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 RL030_UNIQUE. 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 RL030_UNIQUE 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_RL030_UNIQUE TYPE STANDARD TABLE OF RL030_UNIQUE,
      WA_RL030_UNIQUE TYPE RL030_UNIQUE,
      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: <RL030_UNIQUE> TYPE RL030_UNIQUE.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RL030_UNIQUE.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RL030_UNIQUE
  INTO TABLE IT_RL030_UNIQUE.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RL030_UNIQUE
*  INTO TABLE @DATA(IT_RL030_UNIQUE2).
*--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_RL030_UNIQUE INDEX 1 INTO DATA(WA_RL030_UNIQUE2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RL030_UNIQUE ASSIGNING <RL030_UNIQUE>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RL030_UNIQUE>-LGNUM = 1.
<RL030_UNIQUE>-WERKS = 1.
<RL030_UNIQUE>-MATNR = 1.
<RL030_UNIQUE>-BESTQ = 1.
<RL030_UNIQUE>-CHARG = 1.

ENDLOOP.

LOOP AT IT_RL030_UNIQUE INTO WA_RL030_UNIQUE.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RL030_UNIQUE-SOBKZ, sy-vline,
  WA_RL030_UNIQUE-SONUM, sy-vline,
  WA_RL030_UNIQUE-LGTYP, sy-vline,
  WA_RL030_UNIQUE-WDATU, sy-vline,
  WA_RL030_UNIQUE-VFDAT, sy-vline,
  WA_RL030_UNIQUE-LGPLA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RL030_UNIQUE 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_RL030_UNIQUE 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_RL030_UNIQUE INTO WA_RL030_UNIQUE.


*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_RL030_UNIQUE-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RL030_UNIQUE-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SONUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RL030_UNIQUE-SONUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RL030_UNIQUE-SONUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RL030_UNIQUE-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RL030_UNIQUE-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field WENUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RL030_UNIQUE-WENUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RL030_UNIQUE-WENUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field GEWEI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RL030_UNIQUE-GEWEI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RL030_UNIQUE-GEWEI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field IVNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RL030_UNIQUE-IVNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RL030_UNIQUE-IVNUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BENUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RL030_UNIQUE-BENUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RL030_UNIQUE-BENUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit LENUM, internal->external for field LENUM
CALL FUNCTION 'CONVERSION_EXIT_LENUM_OUTPUT'
  EXPORTING
    input =                      WA_RL030_UNIQUE-LENUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RL030_UNIQUE-LENUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field QPLOS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RL030_UNIQUE-QPLOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RL030_UNIQUE-QPLOS.
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_RL030_UNIQUE_STR, 
LGNUM TYPE STRING,
WERKS TYPE STRING,
MATNR TYPE STRING,
BESTQ TYPE STRING,
CHARG TYPE STRING,
SOBKZ TYPE STRING,
SONUM TYPE STRING,
LGTYP TYPE STRING,
WDATU TYPE STRING,
VFDAT TYPE STRING,
LGPLA TYPE STRING,
GESME TYPE STRING,
PLPOS TYPE STRING,
VERME TYPE STRING,
MEINS TYPE STRING,
BTANR_Q TYPE STRING,
BTANR_B TYPE STRING,
SKZUE TYPE STRING,
SKZUA TYPE STRING,
SKZSE TYPE STRING,
SKZSA TYPE STRING,
SKZSI TYPE STRING,
SPGRU TYPE STRING,
ZEUGN TYPE STRING,
BDATU TYPE STRING,
BZEIT TYPE STRING,
BTAPS TYPE STRING,
EDATU TYPE STRING,
EZEIT TYPE STRING,
ADATU TYPE STRING,
AZEIT TYPE STRING,
ZDATU TYPE STRING,
WENUM TYPE STRING,
WEPOS TYPE STRING,
EINME TYPE STRING,
LETYP TYPE STRING,
AUSME TYPE STRING,
MGEWI TYPE STRING,
TBNUM TYPE STRING,
GEWEI TYPE STRING,
IVNUM TYPE STRING,
IVPOS TYPE STRING,
BETYP TYPE STRING,
BENUM TYPE STRING,
LENUM TYPE STRING,
QPLOS TYPE STRING,
LGBER TYPE STRING,
LPTYP TYPE STRING,
PLAUF TYPE STRING,
ANZQU TYPE STRING,
MAXQU TYPE STRING,
ANZLE TYPE STRING,
MAXLE TYPE STRING,
KZDYN TYPE STRING,
LGEWI TYPE STRING,
RDATU TYPE STRING,
RZEIT TYPE STRING,
KZINV TYPE STRING,
IDATU TYPE STRING,
IVIVO TYPE STRING,
KZLER TYPE STRING,
KZVOL TYPE STRING,
SORLP TYPE STRING,
BRAND TYPE STRING,
UNAME TYPE STRING,
LAEDT TYPE STRING,
LKAPV TYPE STRING,
RKAPV TYPE STRING,
KOBER TYPE STRING,
REIHF TYPE STRING,
VERIF TYPE STRING,
MAKTX TYPE STRING,
LQNUM TYPE STRING,
LGORT TYPE STRING,
SGT_SCAT TYPE STRING,
COLOR TYPE STRING,
SIZE1 TYPE STRING,
SIZE2 TYPE STRING,
WRF_CHARSTC1_TXT TYPE STRING,
WRF_CHARSTC2_TXT TYPE STRING,
WRF_CHARSTC3_TXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RL030_UNIQUE_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_RL030_UNIQUE_STR-LGNUM sy-vline 
WA_RL030_UNIQUE_STR-WERKS sy-vline 
WA_RL030_UNIQUE_STR-MATNR sy-vline 
WA_RL030_UNIQUE_STR-BESTQ sy-vline 
WA_RL030_UNIQUE_STR-CHARG sy-vline 
WA_RL030_UNIQUE_STR-SOBKZ sy-vline 
WA_RL030_UNIQUE_STR-SONUM sy-vline 
WA_RL030_UNIQUE_STR-LGTYP sy-vline 
WA_RL030_UNIQUE_STR-WDATU sy-vline 
WA_RL030_UNIQUE_STR-VFDAT sy-vline 
WA_RL030_UNIQUE_STR-LGPLA sy-vline 
WA_RL030_UNIQUE_STR-GESME sy-vline 
WA_RL030_UNIQUE_STR-PLPOS sy-vline 
WA_RL030_UNIQUE_STR-VERME sy-vline 
WA_RL030_UNIQUE_STR-MEINS sy-vline 
WA_RL030_UNIQUE_STR-BTANR_Q sy-vline 
WA_RL030_UNIQUE_STR-BTANR_B sy-vline 
WA_RL030_UNIQUE_STR-SKZUE sy-vline 
WA_RL030_UNIQUE_STR-SKZUA sy-vline 
WA_RL030_UNIQUE_STR-SKZSE sy-vline 
WA_RL030_UNIQUE_STR-SKZSA sy-vline 
WA_RL030_UNIQUE_STR-SKZSI sy-vline 
WA_RL030_UNIQUE_STR-SPGRU sy-vline 
WA_RL030_UNIQUE_STR-ZEUGN sy-vline 
WA_RL030_UNIQUE_STR-BDATU sy-vline 
WA_RL030_UNIQUE_STR-BZEIT sy-vline 
WA_RL030_UNIQUE_STR-BTAPS sy-vline 
WA_RL030_UNIQUE_STR-EDATU sy-vline 
WA_RL030_UNIQUE_STR-EZEIT sy-vline 
WA_RL030_UNIQUE_STR-ADATU sy-vline 
WA_RL030_UNIQUE_STR-AZEIT sy-vline 
WA_RL030_UNIQUE_STR-ZDATU sy-vline 
WA_RL030_UNIQUE_STR-WENUM sy-vline 
WA_RL030_UNIQUE_STR-WEPOS sy-vline 
WA_RL030_UNIQUE_STR-EINME sy-vline 
WA_RL030_UNIQUE_STR-LETYP sy-vline 
WA_RL030_UNIQUE_STR-AUSME sy-vline 
WA_RL030_UNIQUE_STR-MGEWI sy-vline 
WA_RL030_UNIQUE_STR-TBNUM sy-vline 
WA_RL030_UNIQUE_STR-GEWEI sy-vline 
WA_RL030_UNIQUE_STR-IVNUM sy-vline 
WA_RL030_UNIQUE_STR-IVPOS sy-vline 
WA_RL030_UNIQUE_STR-BETYP sy-vline 
WA_RL030_UNIQUE_STR-BENUM sy-vline 
WA_RL030_UNIQUE_STR-LENUM sy-vline 
WA_RL030_UNIQUE_STR-QPLOS sy-vline 
WA_RL030_UNIQUE_STR-LGBER sy-vline 
WA_RL030_UNIQUE_STR-LPTYP sy-vline 
WA_RL030_UNIQUE_STR-PLAUF sy-vline 
WA_RL030_UNIQUE_STR-ANZQU sy-vline 
WA_RL030_UNIQUE_STR-MAXQU sy-vline 
WA_RL030_UNIQUE_STR-ANZLE sy-vline 
WA_RL030_UNIQUE_STR-MAXLE sy-vline 
WA_RL030_UNIQUE_STR-KZDYN sy-vline 
WA_RL030_UNIQUE_STR-LGEWI sy-vline 
WA_RL030_UNIQUE_STR-RDATU sy-vline 
WA_RL030_UNIQUE_STR-RZEIT sy-vline 
WA_RL030_UNIQUE_STR-KZINV sy-vline 
WA_RL030_UNIQUE_STR-IDATU sy-vline 
WA_RL030_UNIQUE_STR-IVIVO sy-vline 
WA_RL030_UNIQUE_STR-KZLER sy-vline 
WA_RL030_UNIQUE_STR-KZVOL sy-vline 
WA_RL030_UNIQUE_STR-SORLP sy-vline 
WA_RL030_UNIQUE_STR-BRAND sy-vline 
WA_RL030_UNIQUE_STR-UNAME sy-vline 
WA_RL030_UNIQUE_STR-LAEDT sy-vline 
WA_RL030_UNIQUE_STR-LKAPV sy-vline 
WA_RL030_UNIQUE_STR-RKAPV sy-vline 
WA_RL030_UNIQUE_STR-KOBER sy-vline 
WA_RL030_UNIQUE_STR-REIHF sy-vline 
WA_RL030_UNIQUE_STR-VERIF sy-vline 
WA_RL030_UNIQUE_STR-MAKTX sy-vline 
WA_RL030_UNIQUE_STR-LQNUM sy-vline 
WA_RL030_UNIQUE_STR-LGORT sy-vline 
WA_RL030_UNIQUE_STR-SGT_SCAT sy-vline 
WA_RL030_UNIQUE_STR-COLOR sy-vline 
WA_RL030_UNIQUE_STR-SIZE1 sy-vline 
WA_RL030_UNIQUE_STR-SIZE2 sy-vline 
WA_RL030_UNIQUE_STR-WRF_CHARSTC1_TXT sy-vline 
WA_RL030_UNIQUE_STR-WRF_CHARSTC2_TXT sy-vline 
WA_RL030_UNIQUE_STR-WRF_CHARSTC3_TXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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