ABAP Select data from SAP table RC29V into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP RC29V 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 RC29V. 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 RC29V 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_RC29V TYPE STANDARD TABLE OF RC29V,
      WA_RC29V TYPE RC29V,
      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: <RC29V> TYPE RC29V.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RC29V.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RC29V
  INTO TABLE IT_RC29V.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RC29V
*  INTO TABLE @DATA(IT_RC29V2).
*--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_RC29V INDEX 1 INTO DATA(WA_RC29V2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RC29V ASSIGNING <RC29V>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RC29V>-A_TABIX = 1.
<RC29V>-B_TABIX = 1.
<RC29V>-DIFFERENCE = 1.
<RC29V>-ICON = 1.
<RC29V>-MNGLG_DIFF = 1.

ENDLOOP.

LOOP AT IT_RC29V INTO WA_RC29V.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RC29V-AKT_KOMP, sy-vline,
  WA_RC29V-AKT_TEXT, sy-vline,
  WA_RC29V-BMTYP_A, sy-vline,
  WA_RC29V-MATNR_A, sy-vline,
  WA_RC29V-DOKNR_A, sy-vline,
  WA_RC29V-DOKAR_A, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RC29V 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_RC29V 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_RC29V INTO WA_RC29V.


*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_A
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_RC29V-MATNR_A
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RC29V-MATNR_A.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DOKNR_A
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RC29V-DOKNR_A
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RC29V-DOKNR_A.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EQUNR_A
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RC29V-EQUNR_A
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RC29V-EQUNR_A.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TPLNR, internal->external for field TPLNR_A
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_RC29V-TPLNR_A
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RC29V-TPLNR_A.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VBELN_A
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RC29V-VBELN_A
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RC29V-VBELN_A.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUFNR_A
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RC29V-AUFNR_A
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RC29V-AUFNR_A.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field PSPNR_A
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_RC29V-PSPNR_A
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RC29V-PSPNR_A.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR_B
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_RC29V-MATNR_B
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RC29V-MATNR_B.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DOKNR_B
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RC29V-DOKNR_B
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RC29V-DOKNR_B.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EQUNR_B
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RC29V-EQUNR_B
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RC29V-EQUNR_B.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TPLNR, internal->external for field TPLNR_B
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_RC29V-TPLNR_B
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RC29V-TPLNR_B.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VBELN_B
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RC29V-VBELN_B
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RC29V-VBELN_B.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUFNR_B
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RC29V-AUFNR_B
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RC29V-AUFNR_B.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field PSPNR_B
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_RC29V-PSPNR_B
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RC29V-PSPNR_B.
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_RC29V_STR, 
A_TABIX TYPE STRING,
B_TABIX TYPE STRING,
DIFFERENCE TYPE STRING,
ICON TYPE STRING,
MNGLG_DIFF TYPE STRING,
AKT_KOMP TYPE STRING,
AKT_TEXT TYPE STRING,
BMTYP_A TYPE STRING,
MATNR_A TYPE STRING,
DOKNR_A TYPE STRING,
DOKAR_A TYPE STRING,
DOKTL_A TYPE STRING,
DOKVR_A TYPE STRING,
EQUNR_A TYPE STRING,
TPLNR_A TYPE STRING,
VBELN_A TYPE STRING,
VBPOS_A TYPE STRING,
AUFNR_A TYPE STRING,
PSPNR_A TYPE STRING,
MNGLG_A TYPE STRING,
BMTYP_B TYPE STRING,
MATNR_B TYPE STRING,
DOKNR_B TYPE STRING,
DOKAR_B TYPE STRING,
DOKTL_B TYPE STRING,
DOKVR_B TYPE STRING,
EQUNR_B TYPE STRING,
TPLNR_B TYPE STRING,
VBELN_B TYPE STRING,
VBPOS_B TYPE STRING,
AUFNR_B TYPE STRING,
PSPNR_B TYPE STRING,
MNGLG_B TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RC29V_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_RC29V_STR-A_TABIX sy-vline 
WA_RC29V_STR-B_TABIX sy-vline 
WA_RC29V_STR-DIFFERENCE sy-vline 
WA_RC29V_STR-ICON sy-vline 
WA_RC29V_STR-MNGLG_DIFF sy-vline 
WA_RC29V_STR-AKT_KOMP sy-vline 
WA_RC29V_STR-AKT_TEXT sy-vline 
WA_RC29V_STR-BMTYP_A sy-vline 
WA_RC29V_STR-MATNR_A sy-vline 
WA_RC29V_STR-DOKNR_A sy-vline 
WA_RC29V_STR-DOKAR_A sy-vline 
WA_RC29V_STR-DOKTL_A sy-vline 
WA_RC29V_STR-DOKVR_A sy-vline 
WA_RC29V_STR-EQUNR_A sy-vline 
WA_RC29V_STR-TPLNR_A sy-vline 
WA_RC29V_STR-VBELN_A sy-vline 
WA_RC29V_STR-VBPOS_A sy-vline 
WA_RC29V_STR-AUFNR_A sy-vline 
WA_RC29V_STR-PSPNR_A sy-vline 
WA_RC29V_STR-MNGLG_A sy-vline 
WA_RC29V_STR-BMTYP_B sy-vline 
WA_RC29V_STR-MATNR_B sy-vline 
WA_RC29V_STR-DOKNR_B sy-vline 
WA_RC29V_STR-DOKAR_B sy-vline 
WA_RC29V_STR-DOKTL_B sy-vline 
WA_RC29V_STR-DOKVR_B sy-vline 
WA_RC29V_STR-EQUNR_B sy-vline 
WA_RC29V_STR-TPLNR_B sy-vline 
WA_RC29V_STR-VBELN_B sy-vline 
WA_RC29V_STR-VBPOS_B sy-vline 
WA_RC29V_STR-AUFNR_B sy-vline 
WA_RC29V_STR-PSPNR_B sy-vline 
WA_RC29V_STR-MNGLG_B sy-vline      INTO ld_text SEPARATED BY SPACE.

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