ABAP Select data from SAP table /ECRS/UI_TD_RP_400_S into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /ECRS/UI_TD_RP_400_S 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 /ECRS/UI_TD_RP_400_S. 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 /ECRS/UI_TD_RP_400_S 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_/ECRS/UI_TD_RP_400_S TYPE STANDARD TABLE OF /ECRS/UI_TD_RP_400_S,
      WA_/ECRS/UI_TD_RP_400_S TYPE /ECRS/UI_TD_RP_400_S,
      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: </ECRS/UI_TD_RP_400_S> TYPE /ECRS/UI_TD_RP_400_S.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/ECRS/UI_TD_RP_400_S.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /ECRS/UI_TD_RP_400_S
  INTO TABLE IT_/ECRS/UI_TD_RP_400_S.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /ECRS/UI_TD_RP_400_S
*  INTO TABLE @DATA(IT_/ECRS/UI_TD_RP_400_S2).
*--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_/ECRS/UI_TD_RP_400_S INDEX 1 INTO DATA(WA_/ECRS/UI_TD_RP_400_S2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/ECRS/UI_TD_RP_400_S ASSIGNING </ECRS/UI_TD_RP_400_S>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</ECRS/UI_TD_RP_400_S>-POIID = 1.
</ECRS/UI_TD_RP_400_S>-RPNUM = 1.
</ECRS/UI_TD_RP_400_S>-RPCTY = 1.
</ECRS/UI_TD_RP_400_S>-RPLEV = 1.
</ECRS/UI_TD_RP_400_S>-RPYEA = 1.

ENDLOOP.

LOOP AT IT_/ECRS/UI_TD_RP_400_S INTO WA_/ECRS/UI_TD_RP_400_S.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/ECRS/UI_TD_RP_400_S-RPMON, sy-vline,
  WA_/ECRS/UI_TD_RP_400_S-DIREC, sy-vline,
  WA_/ECRS/UI_TD_RP_400_S-RPSTA, sy-vline,
  WA_/ECRS/UI_TD_RP_400_S-FCRPP, sy-vline,
  WA_/ECRS/UI_TD_RP_400_S-RPCPL, sy-vline,
  WA_/ECRS/UI_TD_RP_400_S-ISCPL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/ECRS/UI_TD_RP_400_S 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_/ECRS/UI_TD_RP_400_S 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_/ECRS/UI_TD_RP_400_S INTO WA_/ECRS/UI_TD_RP_400_S.


*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 POIID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/ECRS/UI_TD_RP_400_S-POIID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ECRS/UI_TD_RP_400_S-POIID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RPMON
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/ECRS/UI_TD_RP_400_S-RPMON
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ECRS/UI_TD_RP_400_S-RPMON.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field KGUOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/ECRS/UI_TD_RP_400_S-KGUOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ECRS/UI_TD_RP_400_S-KGUOM.
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_/ECRS/UI_TD_RP_400_S_STR, 
POIID TYPE STRING,
RPNUM TYPE STRING,
RPCTY TYPE STRING,
RPLEV TYPE STRING,
RPYEA TYPE STRING,
RPMON TYPE STRING,
DIREC TYPE STRING,
RPSTA TYPE STRING,
FCRPP TYPE STRING,
RPCPL TYPE STRING,
ISCPL TYPE STRING,
PTNUM TYPE STRING,
FSTRP TYPE STRING,
FNLRP TYPE STRING,
VRNUM TYPE STRING,
FREVD TYPE STRING,
RCOLC TYPE STRING,
RLSBY TYPE STRING,
RLSTS TYPE STRING,
GFCFL TYPE STRING,
GFCBY TYPE STRING,
GFCTS TYPE STRING,
INSUM TYPE STRING,
STSUM TYPE STRING,
RPCUR TYPE STRING,
NTSUM TYPE STRING,
KGUOM TYPE STRING,
SPSUM TYPE STRING,
ITSUM TYPE STRING,
CRTBY TYPE STRING,
CRTTS TYPE STRING,
LCHBY TYPE STRING,
LCHTS TYPE STRING,
_DATAAGING TYPE STRING,
STSUM_CUR TYPE STRING,
INSUM_CUR TYPE STRING,
RPSTA_TXT TYPE STRING,
RPLEV_TXT TYPE STRING,
COLCE_TXT TYPE STRING,
CRTON TYPE STRING,
CRTAT TYPE STRING,
LCHON TYPE STRING,
LCHAT TYPE STRING,
GFCON TYPE STRING,
GFCAT TYPE STRING,
RLSON TYPE STRING,
RLSAT TYPE STRING,
RPCTI TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/ECRS/UI_TD_RP_400_S_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_/ECRS/UI_TD_RP_400_S_STR-POIID sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-RPNUM sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-RPCTY sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-RPLEV sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-RPYEA sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-RPMON sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-DIREC sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-RPSTA sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-FCRPP sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-RPCPL sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-ISCPL sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-PTNUM sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-FSTRP sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-FNLRP sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-VRNUM sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-FREVD sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-RCOLC sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-RLSBY sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-RLSTS sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-GFCFL sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-GFCBY sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-GFCTS sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-INSUM sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-STSUM sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-RPCUR sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-NTSUM sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-KGUOM sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-SPSUM sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-ITSUM sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-CRTBY sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-CRTTS sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-LCHBY sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-LCHTS sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-_DATAAGING sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-STSUM_CUR sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-INSUM_CUR sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-RPSTA_TXT sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-RPLEV_TXT sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-COLCE_TXT sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-CRTON sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-CRTAT sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-LCHON sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-LCHAT sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-GFCON sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-GFCAT sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-RLSON sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-RLSAT sy-vline 
WA_/ECRS/UI_TD_RP_400_S_STR-RPCTI sy-vline      INTO ld_text SEPARATED BY SPACE.

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