ABAP Select data from SAP table RCLM_01 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RCLM_01 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 RCLM_01. 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 RCLM_01 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_RCLM_01 TYPE STANDARD TABLE OF RCLM_01,
      WA_RCLM_01 TYPE RCLM_01,
      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: <RCLM_01> TYPE RCLM_01.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RCLM_01.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RCLM_01
  INTO TABLE IT_RCLM_01.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RCLM_01
*  INTO TABLE @DATA(IT_RCLM_012).
*--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_RCLM_01 INDEX 1 INTO DATA(WA_RCLM_012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RCLM_01 ASSIGNING <RCLM_01>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RCLM_01>-QMNUM = 1.
<RCLM_01>-QMART = 1.
<RCLM_01>-OPPONENT = 1.
<RCLM_01>-QMTXT = 1.
<RCLM_01>-ARTPR = 1.

ENDLOOP.

LOOP AT IT_RCLM_01 INTO WA_RCLM_01.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RCLM_01-PRIOK, sy-vline,
  WA_RCLM_01-MZEIT, sy-vline,
  WA_RCLM_01-QMDAT, sy-vline,
  WA_RCLM_01-QMNAM, sy-vline,
  WA_RCLM_01-STRMN, sy-vline,
  WA_RCLM_01-STRUR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RCLM_01 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_RCLM_01 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_RCLM_01 INTO WA_RCLM_01.


*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 ALPHA, internal->external for field QMNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RCLM_01-QMNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCLM_01-QMNUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LS_KDAUF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RCLM_01-LS_KDAUF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCLM_01-LS_KDAUF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LS_VBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RCLM_01-LS_VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCLM_01-LS_VBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RCLM_01-KUNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCLM_01-KUNUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RCLM_01-EBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCLM_01-EBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RCLM_01-LIFNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCLM_01-LIFNUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field HERSTELLER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RCLM_01-HERSTELLER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCLM_01-HERSTELLER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field FERTAUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RCLM_01-FERTAUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCLM_01-FERTAUFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field QWRNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RCLM_01-QWRNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCLM_01-QWRNUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field PSP_NR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_RCLM_01-PSP_NR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCLM_01-PSP_NR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSN, internal->external for field POSID
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_RCLM_01-POSID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCLM_01-POSID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field RM_MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_RCLM_01-RM_MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCLM_01-RM_MATNR.
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_RCLM_01_STR, 
QMNUM TYPE STRING,
QMART TYPE STRING,
OPPONENT TYPE STRING,
QMTXT TYPE STRING,
ARTPR TYPE STRING,
PRIOK TYPE STRING,
MZEIT TYPE STRING,
QMDAT TYPE STRING,
QMNAM TYPE STRING,
STRMN TYPE STRING,
STRUR TYPE STRING,
LTRMN TYPE STRING,
LTRUR TYPE STRING,
QMKAT TYPE STRING,
QMGRP TYPE STRING,
QMCOD TYPE STRING,
LS_KDAUF TYPE STRING,
LS_KDPOS TYPE STRING,
BSTNK TYPE STRING,
BSTDK TYPE STRING,
LS_VBELN TYPE STRING,
LS_POSNR TYPE STRING,
KUNUM TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
LIFNUM TYPE STRING,
HERSTELLER TYPE STRING,
VERID TYPE STRING,
FERTAUFNR TYPE STRING,
FERTAUFPL TYPE STRING,
BUNAME TYPE STRING,
REFNUM TYPE STRING,
QWRNUM TYPE STRING,
CHANCE TYPE STRING,
PSP_NR TYPE STRING,
POSID TYPE STRING,
RM_WERKS TYPE STRING,
RM_MATNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RCLM_01_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_RCLM_01_STR-QMNUM sy-vline 
WA_RCLM_01_STR-QMART sy-vline 
WA_RCLM_01_STR-OPPONENT sy-vline 
WA_RCLM_01_STR-QMTXT sy-vline 
WA_RCLM_01_STR-ARTPR sy-vline 
WA_RCLM_01_STR-PRIOK sy-vline 
WA_RCLM_01_STR-MZEIT sy-vline 
WA_RCLM_01_STR-QMDAT sy-vline 
WA_RCLM_01_STR-QMNAM sy-vline 
WA_RCLM_01_STR-STRMN sy-vline 
WA_RCLM_01_STR-STRUR sy-vline 
WA_RCLM_01_STR-LTRMN sy-vline 
WA_RCLM_01_STR-LTRUR sy-vline 
WA_RCLM_01_STR-QMKAT sy-vline 
WA_RCLM_01_STR-QMGRP sy-vline 
WA_RCLM_01_STR-QMCOD sy-vline 
WA_RCLM_01_STR-LS_KDAUF sy-vline 
WA_RCLM_01_STR-LS_KDPOS sy-vline 
WA_RCLM_01_STR-BSTNK sy-vline 
WA_RCLM_01_STR-BSTDK sy-vline 
WA_RCLM_01_STR-LS_VBELN sy-vline 
WA_RCLM_01_STR-LS_POSNR sy-vline 
WA_RCLM_01_STR-KUNUM sy-vline 
WA_RCLM_01_STR-EBELN sy-vline 
WA_RCLM_01_STR-EBELP sy-vline 
WA_RCLM_01_STR-LIFNUM sy-vline 
WA_RCLM_01_STR-HERSTELLER sy-vline 
WA_RCLM_01_STR-VERID sy-vline 
WA_RCLM_01_STR-FERTAUFNR sy-vline 
WA_RCLM_01_STR-FERTAUFPL sy-vline 
WA_RCLM_01_STR-BUNAME sy-vline 
WA_RCLM_01_STR-REFNUM sy-vline 
WA_RCLM_01_STR-QWRNUM sy-vline 
WA_RCLM_01_STR-CHANCE sy-vline 
WA_RCLM_01_STR-PSP_NR sy-vline 
WA_RCLM_01_STR-POSID sy-vline 
WA_RCLM_01_STR-RM_WERKS sy-vline 
WA_RCLM_01_STR-RM_MATNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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