ABAP Select data from SAP table RDPT_SET_ALV into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RDPT_SET_ALV
*  INTO TABLE @DATA(IT_RDPT_SET_ALV2).
*--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_RDPT_SET_ALV INDEX 1 INTO DATA(WA_RDPT_SET_ALV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RDPT_SET_ALV>-MANDT = 1.
<RDPT_SET_ALV>-SET_KEY = 1.
<RDPT_SET_ALV>-SECURITY_ID = 1.
<RDPT_SET_ALV>-GSART = 1.
<RDPT_SET_ALV>-SET_NAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RDPT_SET_ALV-SET_TEXT, sy-vline,
  WA_RDPT_SET_ALV-FIRST_REDEMPTION, sy-vline,
  WA_RDPT_SET_ALV-LAST_REDEMPTION, sy-vline,
  WA_RDPT_SET_ALV-PERIOD_LENGTH, sy-vline,
  WA_RDPT_SET_ALV-PERIOD_TYPE, sy-vline,
  WA_RDPT_SET_ALV-ROUNDING_RULE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RDPT_SET_ALV 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_RDPT_SET_ALV 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_RDPT_SET_ALV INTO WA_RDPT_SET_ALV.


*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 SECURITY_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RDPT_SET_ALV-SECURITY_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RDPT_SET_ALV-SECURITY_ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PERKZ, internal->external for field PERIOD_TYPE
CALL FUNCTION 'CONVERSION_EXIT_PERKZ_OUTPUT'
  EXPORTING
    input =                      WA_RDPT_SET_ALV-PERIOD_TYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RDPT_SET_ALV-PERIOD_TYPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PERKZ, internal->external for field PERIOD_TYPE_PB
CALL FUNCTION 'CONVERSION_EXIT_PERKZ_OUTPUT'
  EXPORTING
    input =                      WA_RDPT_SET_ALV-PERIOD_TYPE_PB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RDPT_SET_ALV-PERIOD_TYPE_PB.
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_RDPT_SET_ALV_STR, 
MANDT TYPE STRING,
SET_KEY TYPE STRING,
SECURITY_ID TYPE STRING,
GSART TYPE STRING,
SET_NAME TYPE STRING,
SET_TEXT TYPE STRING,
FIRST_REDEMPTION TYPE STRING,
LAST_REDEMPTION TYPE STRING,
PERIOD_LENGTH TYPE STRING,
PERIOD_TYPE TYPE STRING,
ROUNDING_RULE TYPE STRING,
PERIOD_LENGTH_PB TYPE STRING,
PERIOD_TYPE_PB TYPE STRING,
ROUNDING_RULE_PB TYPE STRING,
SET_TYPE TYPE STRING,
CALENDAR TYPE STRING,
DUE_CALENDA_RULE TYPE STRING,
CALC_INCLUSIVE TYPE STRING,
ROUND_TYPE TYPE STRING,
ENTER_MODE TYPE STRING,
NUM_OF_DEC TYPE STRING,
AVTAGE TYPE STRING,
AVTAGEVZ TYPE STRING,
REPAYMENT_CURR TYPE STRING,
WAC_ORIG TYPE STRING,
NET_ORIG TYPE STRING,
WAM_ORIG TYPE STRING,
CURR_VALUE TYPE STRING,
CALC_METHOD TYPE STRING,
CALC_START TYPE STRING,
FAI TYPE STRING,
USE_ICT TYPE STRING,
DFAELL TYPE STRING,
SET_CURRENCY TYPE STRING,
NUMBER_OF_SCHEDULES TYPE STRING,
ICON_ACTIVE_SET TYPE STRING,
ROW_SEL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RDPT_SET_ALV_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_RDPT_SET_ALV_STR-MANDT sy-vline 
WA_RDPT_SET_ALV_STR-SET_KEY sy-vline 
WA_RDPT_SET_ALV_STR-SECURITY_ID sy-vline 
WA_RDPT_SET_ALV_STR-GSART sy-vline 
WA_RDPT_SET_ALV_STR-SET_NAME sy-vline 
WA_RDPT_SET_ALV_STR-SET_TEXT sy-vline 
WA_RDPT_SET_ALV_STR-FIRST_REDEMPTION sy-vline 
WA_RDPT_SET_ALV_STR-LAST_REDEMPTION sy-vline 
WA_RDPT_SET_ALV_STR-PERIOD_LENGTH sy-vline 
WA_RDPT_SET_ALV_STR-PERIOD_TYPE sy-vline 
WA_RDPT_SET_ALV_STR-ROUNDING_RULE sy-vline 
WA_RDPT_SET_ALV_STR-PERIOD_LENGTH_PB sy-vline 
WA_RDPT_SET_ALV_STR-PERIOD_TYPE_PB sy-vline 
WA_RDPT_SET_ALV_STR-ROUNDING_RULE_PB sy-vline 
WA_RDPT_SET_ALV_STR-SET_TYPE sy-vline 
WA_RDPT_SET_ALV_STR-CALENDAR sy-vline 
WA_RDPT_SET_ALV_STR-DUE_CALENDA_RULE sy-vline 
WA_RDPT_SET_ALV_STR-CALC_INCLUSIVE sy-vline 
WA_RDPT_SET_ALV_STR-ROUND_TYPE sy-vline 
WA_RDPT_SET_ALV_STR-ENTER_MODE sy-vline 
WA_RDPT_SET_ALV_STR-NUM_OF_DEC sy-vline 
WA_RDPT_SET_ALV_STR-AVTAGE sy-vline 
WA_RDPT_SET_ALV_STR-AVTAGEVZ sy-vline 
WA_RDPT_SET_ALV_STR-REPAYMENT_CURR sy-vline 
WA_RDPT_SET_ALV_STR-WAC_ORIG sy-vline 
WA_RDPT_SET_ALV_STR-NET_ORIG sy-vline 
WA_RDPT_SET_ALV_STR-WAM_ORIG sy-vline 
WA_RDPT_SET_ALV_STR-CURR_VALUE sy-vline 
WA_RDPT_SET_ALV_STR-CALC_METHOD sy-vline 
WA_RDPT_SET_ALV_STR-CALC_START sy-vline 
WA_RDPT_SET_ALV_STR-FAI sy-vline 
WA_RDPT_SET_ALV_STR-USE_ICT sy-vline 
WA_RDPT_SET_ALV_STR-DFAELL sy-vline 
WA_RDPT_SET_ALV_STR-SET_CURRENCY sy-vline 
WA_RDPT_SET_ALV_STR-NUMBER_OF_SCHEDULES sy-vline 
WA_RDPT_SET_ALV_STR-ICON_ACTIVE_SET sy-vline 
WA_RDPT_SET_ALV_STR-ROW_SEL sy-vline      INTO ld_text SEPARATED BY SPACE.

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