ABAP Select data from SAP table RDPT_SCHEDULE_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_SCHEDULE_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_SCHEDULE_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_SCHEDULE_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_SCHEDULE_ALV TYPE STANDARD TABLE OF RDPT_SCHEDULE_ALV,
      WA_RDPT_SCHEDULE_ALV TYPE RDPT_SCHEDULE_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_SCHEDULE_ALV> TYPE RDPT_SCHEDULE_ALV.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RDPT_SCHEDULE_ALV
*  INTO TABLE @DATA(IT_RDPT_SCHEDULE_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_SCHEDULE_ALV INDEX 1 INTO DATA(WA_RDPT_SCHEDULE_ALV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RDPT_SCHEDULE_ALV>-MANDT = 1.
<RDPT_SCHEDULE_ALV>-SCHEDULE_KEY = 1.
<RDPT_SCHEDULE_ALV>-SET_KEY = 1.
<RDPT_SCHEDULE_ALV>-SCHEDULE_NAME = 1.
<RDPT_SCHEDULE_ALV>-SCHEDULE_TEXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RDPT_SCHEDULE_ALV-VALID_FROM, sy-vline,
  WA_RDPT_SCHEDULE_ALV-FIRST_REDEMPTION, sy-vline,
  WA_RDPT_SCHEDULE_ALV-NUM_OF_REDEMPT, sy-vline,
  WA_RDPT_SCHEDULE_ALV-SCHEDULE_FILE, sy-vline,
  WA_RDPT_SCHEDULE_ALV-ENTER_MODE, sy-vline,
  WA_RDPT_SCHEDULE_ALV-FIXING_FLG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RDPT_SCHEDULE_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_SCHEDULE_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_SCHEDULE_ALV INTO WA_RDPT_SCHEDULE_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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_RDPT_SCHEDULE_ALV_STR, 
MANDT TYPE STRING,
SCHEDULE_KEY TYPE STRING,
SET_KEY TYPE STRING,
SCHEDULE_NAME TYPE STRING,
SCHEDULE_TEXT TYPE STRING,
VALID_FROM TYPE STRING,
FIRST_REDEMPTION TYPE STRING,
NUM_OF_REDEMPT TYPE STRING,
SCHEDULE_FILE TYPE STRING,
ENTER_MODE TYPE STRING,
FIXING_FLG TYPE STRING,
RERF TYPE STRING,
DERF TYPE STRING,
TERF TYPE STRING,
REHER TYPE STRING,
RBEAR TYPE STRING,
DBEAR TYPE STRING,
TBEAR TYPE STRING,
RBHER TYPE STRING,
WAC TYPE STRING,
NET TYPE STRING,
AGE TYPE STRING,
WAM TYPE STRING,
PSA_1 TYPE STRING,
PSA_3 TYPE STRING,
PSA_6 TYPE STRING,
PSA_12 TYPE STRING,
PSA_LIFE TYPE STRING,
CPR_1 TYPE STRING,
CPR_3 TYPE STRING,
CPR_6 TYPE STRING,
CPR_12 TYPE STRING,
CPR_LIFE TYPE STRING,
PROVIDER TYPE STRING,
SMM TYPE STRING,
SET_NAME TYPE STRING,
ICON_CHECKED TYPE STRING,
ROW_SEL TYPE STRING,
ICON_ACTIVE_SCHEDULE TYPE STRING,
ICON_ACTIVE_SET TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RDPT_SCHEDULE_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_SCHEDULE_ALV_STR-MANDT sy-vline 
WA_RDPT_SCHEDULE_ALV_STR-SCHEDULE_KEY sy-vline 
WA_RDPT_SCHEDULE_ALV_STR-SET_KEY sy-vline 
WA_RDPT_SCHEDULE_ALV_STR-SCHEDULE_NAME sy-vline 
WA_RDPT_SCHEDULE_ALV_STR-SCHEDULE_TEXT sy-vline 
WA_RDPT_SCHEDULE_ALV_STR-VALID_FROM sy-vline 
WA_RDPT_SCHEDULE_ALV_STR-FIRST_REDEMPTION sy-vline 
WA_RDPT_SCHEDULE_ALV_STR-NUM_OF_REDEMPT sy-vline 
WA_RDPT_SCHEDULE_ALV_STR-SCHEDULE_FILE sy-vline 
WA_RDPT_SCHEDULE_ALV_STR-ENTER_MODE sy-vline 
WA_RDPT_SCHEDULE_ALV_STR-FIXING_FLG sy-vline 
WA_RDPT_SCHEDULE_ALV_STR-RERF sy-vline 
WA_RDPT_SCHEDULE_ALV_STR-DERF sy-vline 
WA_RDPT_SCHEDULE_ALV_STR-TERF sy-vline 
WA_RDPT_SCHEDULE_ALV_STR-REHER sy-vline 
WA_RDPT_SCHEDULE_ALV_STR-RBEAR sy-vline 
WA_RDPT_SCHEDULE_ALV_STR-DBEAR sy-vline 
WA_RDPT_SCHEDULE_ALV_STR-TBEAR sy-vline 
WA_RDPT_SCHEDULE_ALV_STR-RBHER sy-vline 
WA_RDPT_SCHEDULE_ALV_STR-WAC sy-vline 
WA_RDPT_SCHEDULE_ALV_STR-NET sy-vline 
WA_RDPT_SCHEDULE_ALV_STR-AGE sy-vline 
WA_RDPT_SCHEDULE_ALV_STR-WAM sy-vline 
WA_RDPT_SCHEDULE_ALV_STR-PSA_1 sy-vline 
WA_RDPT_SCHEDULE_ALV_STR-PSA_3 sy-vline 
WA_RDPT_SCHEDULE_ALV_STR-PSA_6 sy-vline 
WA_RDPT_SCHEDULE_ALV_STR-PSA_12 sy-vline 
WA_RDPT_SCHEDULE_ALV_STR-PSA_LIFE sy-vline 
WA_RDPT_SCHEDULE_ALV_STR-CPR_1 sy-vline 
WA_RDPT_SCHEDULE_ALV_STR-CPR_3 sy-vline 
WA_RDPT_SCHEDULE_ALV_STR-CPR_6 sy-vline 
WA_RDPT_SCHEDULE_ALV_STR-CPR_12 sy-vline 
WA_RDPT_SCHEDULE_ALV_STR-CPR_LIFE sy-vline 
WA_RDPT_SCHEDULE_ALV_STR-PROVIDER sy-vline 
WA_RDPT_SCHEDULE_ALV_STR-SMM sy-vline 
WA_RDPT_SCHEDULE_ALV_STR-SET_NAME sy-vline 
WA_RDPT_SCHEDULE_ALV_STR-ICON_CHECKED sy-vline 
WA_RDPT_SCHEDULE_ALV_STR-ROW_SEL sy-vline 
WA_RDPT_SCHEDULE_ALV_STR-ICON_ACTIVE_SCHEDULE sy-vline 
WA_RDPT_SCHEDULE_ALV_STR-ICON_ACTIVE_SET sy-vline      INTO ld_text SEPARATED BY SPACE.

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