ABAP Select data from SAP table RLCPITDIA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RLCPITDIA
*  INTO TABLE @DATA(IT_RLCPITDIA2).
*--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_RLCPITDIA INDEX 1 INTO DATA(WA_RLCPITDIA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RLCPITDIA>-MARK = 1.
<RLCPITDIA>-COLINFO = 1.
<RLCPITDIA>-CPSTATE_ICON = 1.
<RLCPITDIA>-CPSTATEIT = 1.
<RLCPITDIA>-CPKIND = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RLCPITDIA-CPITTYPE, sy-vline,
  WA_RLCPITDIA-CPQUAN, sy-vline,
  WA_RLCPITDIA-CPQUAN_STNORM, sy-vline,
  WA_RLCPITDIA-CPQUAN_PONORM, sy-vline,
  WA_RLCPITDIA-CPQUAN_STNORM_INV, sy-vline,
  WA_RLCPITDIA-CPQUAN_PONORM_INV, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RLCPITDIA 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_RLCPITDIA 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_RLCPITDIA INTO WA_RLCPITDIA.


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

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

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

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

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

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

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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field REFDOCNO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RLCPITDIA-REFDOCNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RLCPITDIA-REFDOCNO.
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_RLCPITDIA_STR, 
MARK TYPE STRING,
COLINFO TYPE STRING,
CPSTATE_ICON TYPE STRING,
CPSTATEIT TYPE STRING,
CPKIND TYPE STRING,
CPITTYPE TYPE STRING,
CPQUAN TYPE STRING,
CPQUAN_STNORM TYPE STRING,
CPQUAN_PONORM TYPE STRING,
CPQUAN_STNORM_INV TYPE STRING,
CPQUAN_PONORM_INV TYPE STRING,
CPUOM TYPE STRING,
CPDOCNO TYPE STRING,
CPDOCIT TYPE STRING,
CPDOCDATE TYPE STRING,
CPPOSTDATE TYPE STRING,
CPGRPNO TYPE STRING,
CPACCTNO TYPE STRING,
POSTNO TYPE STRING,
BJAHR TYPE STRING,
POSTIT TYPE STRING,
ACCTPTY TYPE STRING,
ACMAN TYPE STRING,
ACMANTY TYPE STRING,
ACHOL TYPE STRING,
ACHOLTY TYPE STRING,
MBLNR TYPE STRING,
MJAHR TYPE STRING,
MBLIT TYPE STRING,
BWART TYPE STRING,
REFLFSNR TYPE STRING,
REFLFSPOS TYPE STRING,
REFFRBNR TYPE STRING,
LSMNG TYPE STRING,
LSMEH TYPE STRING,
REFLFSNR_I TYPE STRING,
REFPOSTNO TYPE STRING,
REFPOSTYEAR TYPE STRING,
REFPOSTIT TYPE STRING,
GRP_POSTIT TYPE STRING,
ACSTNO TYPE STRING,
ACSTIT TYPE STRING,
CHNGTYPE TYPE STRING,
TRANSTYPE TYPE STRING,
CUSTNO TYPE STRING,
SUPPNO TYPE STRING,
TRANSPTN TYPE STRING,
REFDOCNO TYPE STRING,
REFDOCIT TYPE STRING,
REFDOCDATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RLCPITDIA_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_RLCPITDIA_STR-MARK sy-vline 
WA_RLCPITDIA_STR-COLINFO sy-vline 
WA_RLCPITDIA_STR-CPSTATE_ICON sy-vline 
WA_RLCPITDIA_STR-CPSTATEIT sy-vline 
WA_RLCPITDIA_STR-CPKIND sy-vline 
WA_RLCPITDIA_STR-CPITTYPE sy-vline 
WA_RLCPITDIA_STR-CPQUAN sy-vline 
WA_RLCPITDIA_STR-CPQUAN_STNORM sy-vline 
WA_RLCPITDIA_STR-CPQUAN_PONORM sy-vline 
WA_RLCPITDIA_STR-CPQUAN_STNORM_INV sy-vline 
WA_RLCPITDIA_STR-CPQUAN_PONORM_INV sy-vline 
WA_RLCPITDIA_STR-CPUOM sy-vline 
WA_RLCPITDIA_STR-CPDOCNO sy-vline 
WA_RLCPITDIA_STR-CPDOCIT sy-vline 
WA_RLCPITDIA_STR-CPDOCDATE sy-vline 
WA_RLCPITDIA_STR-CPPOSTDATE sy-vline 
WA_RLCPITDIA_STR-CPGRPNO sy-vline 
WA_RLCPITDIA_STR-CPACCTNO sy-vline 
WA_RLCPITDIA_STR-POSTNO sy-vline 
WA_RLCPITDIA_STR-BJAHR sy-vline 
WA_RLCPITDIA_STR-POSTIT sy-vline 
WA_RLCPITDIA_STR-ACCTPTY sy-vline 
WA_RLCPITDIA_STR-ACMAN sy-vline 
WA_RLCPITDIA_STR-ACMANTY sy-vline 
WA_RLCPITDIA_STR-ACHOL sy-vline 
WA_RLCPITDIA_STR-ACHOLTY sy-vline 
WA_RLCPITDIA_STR-MBLNR sy-vline 
WA_RLCPITDIA_STR-MJAHR sy-vline 
WA_RLCPITDIA_STR-MBLIT sy-vline 
WA_RLCPITDIA_STR-BWART sy-vline 
WA_RLCPITDIA_STR-REFLFSNR sy-vline 
WA_RLCPITDIA_STR-REFLFSPOS sy-vline 
WA_RLCPITDIA_STR-REFFRBNR sy-vline 
WA_RLCPITDIA_STR-LSMNG sy-vline 
WA_RLCPITDIA_STR-LSMEH sy-vline 
WA_RLCPITDIA_STR-REFLFSNR_I sy-vline 
WA_RLCPITDIA_STR-REFPOSTNO sy-vline 
WA_RLCPITDIA_STR-REFPOSTYEAR sy-vline 
WA_RLCPITDIA_STR-REFPOSTIT sy-vline 
WA_RLCPITDIA_STR-GRP_POSTIT sy-vline 
WA_RLCPITDIA_STR-ACSTNO sy-vline 
WA_RLCPITDIA_STR-ACSTIT sy-vline 
WA_RLCPITDIA_STR-CHNGTYPE sy-vline 
WA_RLCPITDIA_STR-TRANSTYPE sy-vline 
WA_RLCPITDIA_STR-CUSTNO sy-vline 
WA_RLCPITDIA_STR-SUPPNO sy-vline 
WA_RLCPITDIA_STR-TRANSPTN sy-vline 
WA_RLCPITDIA_STR-REFDOCNO sy-vline 
WA_RLCPITDIA_STR-REFDOCIT sy-vline 
WA_RLCPITDIA_STR-REFDOCDATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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