ABAP Select data from SAP table /TDAG/CPS_USEDISPLAY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /TDAG/CPS_USEDISPLAY
*  INTO TABLE @DATA(IT_/TDAG/CPS_USEDISPLAY2).
*--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_/TDAG/CPS_USEDISPLAY INDEX 1 INTO DATA(WA_/TDAG/CPS_USEDISPLAY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</TDAG/CPS_USEDISPLAY>-MODE = 1.
</TDAG/CPS_USEDISPLAY>-LOCKMOD = 1.
</TDAG/CPS_USEDISPLAY>-RECN = 1.
</TDAG/CPS_USEDISPLAY>-RECNVA = 1.
</TDAG/CPS_USEDISPLAY>-RECNVH = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/TDAG/CPS_USEDISPLAY-REF, sy-vline,
  WA_/TDAG/CPS_USEDISPLAY-SHORTTITLE, sy-vline,
  WA_/TDAG/CPS_USEDISPLAY-MAINUSERGRP, sy-vline,
  WA_/TDAG/CPS_USEDISPLAY-SECTOROFUSE, sy-vline,
  WA_/TDAG/CPS_USEDISPLAY-PRODUCTCAT, sy-vline,
  WA_/TDAG/CPS_USEDISPLAY-PROCESSCAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/TDAG/CPS_USEDISPLAY 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_/TDAG/CPS_USEDISPLAY 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_/TDAG/CPS_USEDISPLAY INTO WA_/TDAG/CPS_USEDISPLAY.


*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 RECN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/TDAG/CPS_USEDISPLAY-RECN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/TDAG/CPS_USEDISPLAY-RECN.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit ALPHA, internal->external for field DOKNRUSE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/TDAG/CPS_USEDISPLAY-DOKNRUSE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/TDAG/CPS_USEDISPLAY-DOKNRUSE.
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_/TDAG/CPS_USEDISPLAY_STR, 
MODE TYPE STRING,
LOCKMOD TYPE STRING,
RECN TYPE STRING,
RECNVA TYPE STRING,
RECNVH TYPE STRING,
REF TYPE STRING,
SHORTTITLE TYPE STRING,
MAINUSERGRP TYPE STRING,
SECTOROFUSE TYPE STRING,
PRODUCTCAT TYPE STRING,
PROCESSCAT TYPE STRING,
ARTICLECAT TYPE STRING,
ENVRELEASE TYPE STRING,
ACTIVITIES TYPE STRING,
REGSTATUS TYPE STRING,
REGSTATUS_ICON TYPE STRING,
STATUSJUST TYPE STRING,
OWNUSE TYPE STRING,
STANDARDUSE TYPE STRING,
EXPOSURETEXT TYPE STRING,
REMARKS TYPE STRING,
CUSTOMERNR TYPE STRING,
MATERIALNR TYPE STRING,
DOKARUSE TYPE STRING,
DOKNRUSE TYPE STRING,
DOKVRUSE TYPE STRING,
DOKTLUSE TYPE STRING,
USEDASINTERMEDIATE TYPE STRING,
EVALSTATUS TYPE STRING,
LINKTOUSE TYPE STRING,
LINKTOUSE_CBX TYPE STRING,
ADD_CHAR_TAB TYPE STRING,
LINKGROUP_ICON TYPE STRING,
INPUT_CHECK_VALID TYPE STRING,
FLG_DATA_CHANGED TYPE STRING,
INPUT_CHECK_MSGS TYPE STRING,
EXPOSURETYPE_TXT TYPE STRING,
OWNUSE_TXT TYPE STRING,
SHORTTITLE_TXT TYPE STRING,
SECTOROFUSE_TXT TYPE STRING,
PRODUCTCAT_TXT TYPE STRING,
PROCESSCAT_TXT TYPE STRING,
ARTICLECAT_TXT TYPE STRING,
ENVRELEASE_TXT TYPE STRING,
ACTIVITIES_TXT TYPE STRING,
REGSTATUS_TXT TYPE STRING,
STANDARDUSE_TXT TYPE STRING,
REMARKS_TXT TYPE STRING,
FLG_IMPORTED TYPE STRING,
USEDASINTERMEDIATE_TXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/TDAG/CPS_USEDISPLAY_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_/TDAG/CPS_USEDISPLAY_STR-MODE sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-LOCKMOD sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-RECN sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-RECNVA sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-RECNVH sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-REF sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-SHORTTITLE sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-MAINUSERGRP sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-SECTOROFUSE sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-PRODUCTCAT sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-PROCESSCAT sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-ARTICLECAT sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-ENVRELEASE sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-ACTIVITIES sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-REGSTATUS sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-REGSTATUS_ICON sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-STATUSJUST sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-OWNUSE sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-STANDARDUSE sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-EXPOSURETEXT sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-REMARKS sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-CUSTOMERNR sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-MATERIALNR sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-DOKARUSE sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-DOKNRUSE sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-DOKVRUSE sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-DOKTLUSE sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-USEDASINTERMEDIATE sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-EVALSTATUS sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-LINKTOUSE sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-LINKTOUSE_CBX sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-ADD_CHAR_TAB sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-LINKGROUP_ICON sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-INPUT_CHECK_VALID sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-FLG_DATA_CHANGED sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-INPUT_CHECK_MSGS sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-EXPOSURETYPE_TXT sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-OWNUSE_TXT sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-SHORTTITLE_TXT sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-SECTOROFUSE_TXT sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-PRODUCTCAT_TXT sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-PROCESSCAT_TXT sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-ARTICLECAT_TXT sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-ENVRELEASE_TXT sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-ACTIVITIES_TXT sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-REGSTATUS_TXT sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-STANDARDUSE_TXT sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-REMARKS_TXT sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-FLG_IMPORTED sy-vline 
WA_/TDAG/CPS_USEDISPLAY_STR-USEDASINTERMEDIATE_TXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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