ABAP Select data from SAP table WRF_PCTR_S_ALV_TL_SCHED into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WRF_PCTR_S_ALV_TL_SCHED
*  INTO TABLE @DATA(IT_WRF_PCTR_S_ALV_TL_SCHED2).
*--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_WRF_PCTR_S_ALV_TL_SCHED INDEX 1 INTO DATA(WA_WRF_PCTR_S_ALV_TL_SCHED2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WRF_PCTR_S_ALV_TL_SCHED>-ICON_UPDATE = 1.
<WRF_PCTR_S_ALV_TL_SCHED>-MANDT = 1.
<WRF_PCTR_S_ALV_TL_SCHED>-EBELN = 1.
<WRF_PCTR_S_ALV_TL_SCHED>-EBELP = 1.
<WRF_PCTR_S_ALV_TL_SCHED>-ETENR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WRF_PCTR_S_ALV_TL_SCHED-DL_ID, sy-vline,
  WA_WRF_PCTR_S_ALV_TL_SCHED-FOLDER_ID, sy-vline,
  WA_WRF_PCTR_S_ALV_TL_SCHED-BSART, sy-vline,
  WA_WRF_PCTR_S_ALV_TL_SCHED-EKORG, sy-vline,
  WA_WRF_PCTR_S_ALV_TL_SCHED-EKGRP, sy-vline,
  WA_WRF_PCTR_S_ALV_TL_SCHED-BEDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WRF_PCTR_S_ALV_TL_SCHED 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_WRF_PCTR_S_ALV_TL_SCHED 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_WRF_PCTR_S_ALV_TL_SCHED INTO WA_WRF_PCTR_S_ALV_TL_SCHED.


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

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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WRF_PCTR_S_ALV_TL_SCHED-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRF_PCTR_S_ALV_TL_SCHED-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_WRF_PCTR_S_ALV_TL_SCHED_STR, 
ICON_UPDATE TYPE STRING,
MANDT TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
ETENR TYPE STRING,
DL_ID TYPE STRING,
FOLDER_ID TYPE STRING,
BSART TYPE STRING,
EKORG TYPE STRING,
EKGRP TYPE STRING,
BEDAT TYPE STRING,
LIFNR TYPE STRING,
WERKS TYPE STRING,
MATKL TYPE STRING,
MATNR TYPE STRING,
ERNAM TYPE STRING,
HANDOVER_DATE TYPE STRING,
EINDT TYPE STRING,
DL_STATUS TYPE STRING,
NETWR TYPE STRING,
WAERS TYPE STRING,
NOTE_ACTIVITY TYPE STRING,
ACTIVITY_ID TYPE STRING,
DATESHIFT_ALWD TYPE STRING,
DUNNING_ALWD TYPE STRING,
CNCL_ANCMT_ALWD TYPE STRING,
CANCELATION_ALWD TYPE STRING,
ACTIVITY_MODE TYPE STRING,
ORIGIN_DATE_ID TYPE STRING,
PROCESSING_TYPE TYPE STRING,
QTY_MONITOR TYPE STRING,
QTY_OVERDEL TYPE STRING,
QTY_UNDERDEL TYPE STRING,
REM_QTY_AUTO TYPE STRING,
DISTANCE TYPE STRING,
STAT_DAT_SHIFT TYPE STRING,
DELAYED TYPE STRING,
DATESHIFT_NUMBER TYPE STRING,
CLOSING_INDICATR TYPE STRING,
TIMESTAMP TYPE STRING,
UNAME TYPE STRING,
PROGRAMM TYPE STRING,
MESSAGE TYPE STRING,
SELKZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WRF_PCTR_S_ALV_TL_SCHED_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_WRF_PCTR_S_ALV_TL_SCHED_STR-ICON_UPDATE sy-vline 
WA_WRF_PCTR_S_ALV_TL_SCHED_STR-MANDT sy-vline 
WA_WRF_PCTR_S_ALV_TL_SCHED_STR-EBELN sy-vline 
WA_WRF_PCTR_S_ALV_TL_SCHED_STR-EBELP sy-vline 
WA_WRF_PCTR_S_ALV_TL_SCHED_STR-ETENR sy-vline 
WA_WRF_PCTR_S_ALV_TL_SCHED_STR-DL_ID sy-vline 
WA_WRF_PCTR_S_ALV_TL_SCHED_STR-FOLDER_ID sy-vline 
WA_WRF_PCTR_S_ALV_TL_SCHED_STR-BSART sy-vline 
WA_WRF_PCTR_S_ALV_TL_SCHED_STR-EKORG sy-vline 
WA_WRF_PCTR_S_ALV_TL_SCHED_STR-EKGRP sy-vline 
WA_WRF_PCTR_S_ALV_TL_SCHED_STR-BEDAT sy-vline 
WA_WRF_PCTR_S_ALV_TL_SCHED_STR-LIFNR sy-vline 
WA_WRF_PCTR_S_ALV_TL_SCHED_STR-WERKS sy-vline 
WA_WRF_PCTR_S_ALV_TL_SCHED_STR-MATKL sy-vline 
WA_WRF_PCTR_S_ALV_TL_SCHED_STR-MATNR sy-vline 
WA_WRF_PCTR_S_ALV_TL_SCHED_STR-ERNAM sy-vline 
WA_WRF_PCTR_S_ALV_TL_SCHED_STR-HANDOVER_DATE sy-vline 
WA_WRF_PCTR_S_ALV_TL_SCHED_STR-EINDT sy-vline 
WA_WRF_PCTR_S_ALV_TL_SCHED_STR-DL_STATUS sy-vline 
WA_WRF_PCTR_S_ALV_TL_SCHED_STR-NETWR sy-vline 
WA_WRF_PCTR_S_ALV_TL_SCHED_STR-WAERS sy-vline 
WA_WRF_PCTR_S_ALV_TL_SCHED_STR-NOTE_ACTIVITY sy-vline 
WA_WRF_PCTR_S_ALV_TL_SCHED_STR-ACTIVITY_ID sy-vline 
WA_WRF_PCTR_S_ALV_TL_SCHED_STR-DATESHIFT_ALWD sy-vline 
WA_WRF_PCTR_S_ALV_TL_SCHED_STR-DUNNING_ALWD sy-vline 
WA_WRF_PCTR_S_ALV_TL_SCHED_STR-CNCL_ANCMT_ALWD sy-vline 
WA_WRF_PCTR_S_ALV_TL_SCHED_STR-CANCELATION_ALWD sy-vline 
WA_WRF_PCTR_S_ALV_TL_SCHED_STR-ACTIVITY_MODE sy-vline 
WA_WRF_PCTR_S_ALV_TL_SCHED_STR-ORIGIN_DATE_ID sy-vline 
WA_WRF_PCTR_S_ALV_TL_SCHED_STR-PROCESSING_TYPE sy-vline 
WA_WRF_PCTR_S_ALV_TL_SCHED_STR-QTY_MONITOR sy-vline 
WA_WRF_PCTR_S_ALV_TL_SCHED_STR-QTY_OVERDEL sy-vline 
WA_WRF_PCTR_S_ALV_TL_SCHED_STR-QTY_UNDERDEL sy-vline 
WA_WRF_PCTR_S_ALV_TL_SCHED_STR-REM_QTY_AUTO sy-vline 
WA_WRF_PCTR_S_ALV_TL_SCHED_STR-DISTANCE sy-vline 
WA_WRF_PCTR_S_ALV_TL_SCHED_STR-STAT_DAT_SHIFT sy-vline 
WA_WRF_PCTR_S_ALV_TL_SCHED_STR-DELAYED sy-vline 
WA_WRF_PCTR_S_ALV_TL_SCHED_STR-DATESHIFT_NUMBER sy-vline 
WA_WRF_PCTR_S_ALV_TL_SCHED_STR-CLOSING_INDICATR sy-vline 
WA_WRF_PCTR_S_ALV_TL_SCHED_STR-TIMESTAMP sy-vline 
WA_WRF_PCTR_S_ALV_TL_SCHED_STR-UNAME sy-vline 
WA_WRF_PCTR_S_ALV_TL_SCHED_STR-PROGRAMM sy-vline 
WA_WRF_PCTR_S_ALV_TL_SCHED_STR-MESSAGE sy-vline 
WA_WRF_PCTR_S_ALV_TL_SCHED_STR-SELKZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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