ABAP Select data from SAP table /TDAG/CPS_REP_SUBLIST_ALV 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_REP_SUBLIST_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 /TDAG/CPS_REP_SUBLIST_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 /TDAG/CPS_REP_SUBLIST_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_/TDAG/CPS_REP_SUBLIST_ALV TYPE STANDARD TABLE OF /TDAG/CPS_REP_SUBLIST_ALV,
      WA_/TDAG/CPS_REP_SUBLIST_ALV TYPE /TDAG/CPS_REP_SUBLIST_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: </TDAG/CPS_REP_SUBLIST_ALV> TYPE /TDAG/CPS_REP_SUBLIST_ALV.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /TDAG/CPS_REP_SUBLIST_ALV
*  INTO TABLE @DATA(IT_/TDAG/CPS_REP_SUBLIST_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_/TDAG/CPS_REP_SUBLIST_ALV INDEX 1 INTO DATA(WA_/TDAG/CPS_REP_SUBLIST_ALV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</TDAG/CPS_REP_SUBLIST_ALV>-RECN = 1.
</TDAG/CPS_REP_SUBLIST_ALV>-SUBID = 1.
</TDAG/CPS_REP_SUBLIST_ALV>-SUBCAT = 1.
</TDAG/CPS_REP_SUBLIST_ALV>-REGLIST = 1.
</TDAG/CPS_REP_SUBLIST_ALV>-REGLISTD = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/TDAG/CPS_REP_SUBLIST_ALV-IDENT1, sy-vline,
  WA_/TDAG/CPS_REP_SUBLIST_ALV-IDENT2, sy-vline,
  WA_/TDAG/CPS_REP_SUBLIST_ALV-PROH, sy-vline,
  WA_/TDAG/CPS_REP_SUBLIST_ALV-PROHIBIT, sy-vline,
  WA_/TDAG/CPS_REP_SUBLIST_ALV-DECL, sy-vline,
  WA_/TDAG/CPS_REP_SUBLIST_ALV-DECLARE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/TDAG/CPS_REP_SUBLIST_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_/TDAG/CPS_REP_SUBLIST_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_/TDAG/CPS_REP_SUBLIST_ALV INTO WA_/TDAG/CPS_REP_SUBLIST_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 RECN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/TDAG/CPS_REP_SUBLIST_ALV-RECN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/TDAG/CPS_REP_SUBLIST_ALV-RECN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SPEC1, internal->external for field SUBID
CALL FUNCTION 'CONVERSION_EXIT_SPEC1_OUTPUT'
  EXPORTING
    input =                      WA_/TDAG/CPS_REP_SUBLIST_ALV-SUBID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/TDAG/CPS_REP_SUBLIST_ALV-SUBID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field THRE_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/TDAG/CPS_REP_SUBLIST_ALV-THRE_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/TDAG/CPS_REP_SUBLIST_ALV-THRE_UNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CHRI3, internal->external for field EXEMPT_KEY
CALL FUNCTION 'CONVERSION_EXIT_CHRI3_OUTPUT'
  EXPORTING
    input =                      WA_/TDAG/CPS_REP_SUBLIST_ALV-EXEMPT_KEY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/TDAG/CPS_REP_SUBLIST_ALV-EXEMPT_KEY.
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_REP_SUBLIST_ALV_STR, 
RECN TYPE STRING,
SUBID TYPE STRING,
SUBCAT TYPE STRING,
REGLIST TYPE STRING,
REGLISTD TYPE STRING,
IDENT1 TYPE STRING,
IDENT2 TYPE STRING,
PROH TYPE STRING,
PROHIBIT TYPE STRING,
DECL TYPE STRING,
DECLARE TYPE STRING,
THRE_NUM TYPE STRING,
THRESHOLD TYPE STRING,
THRE_UNIT TYPE STRING,
EXEMPT_KEY TYPE STRING,
EXEMPT_TXT TYPE STRING,
AGAINST_PART TYPE STRING,
AGAINST_PART_TXT TYPE STRING,
MARKFLG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/TDAG/CPS_REP_SUBLIST_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_/TDAG/CPS_REP_SUBLIST_ALV_STR-RECN sy-vline 
WA_/TDAG/CPS_REP_SUBLIST_ALV_STR-SUBID sy-vline 
WA_/TDAG/CPS_REP_SUBLIST_ALV_STR-SUBCAT sy-vline 
WA_/TDAG/CPS_REP_SUBLIST_ALV_STR-REGLIST sy-vline 
WA_/TDAG/CPS_REP_SUBLIST_ALV_STR-REGLISTD sy-vline 
WA_/TDAG/CPS_REP_SUBLIST_ALV_STR-IDENT1 sy-vline 
WA_/TDAG/CPS_REP_SUBLIST_ALV_STR-IDENT2 sy-vline 
WA_/TDAG/CPS_REP_SUBLIST_ALV_STR-PROH sy-vline 
WA_/TDAG/CPS_REP_SUBLIST_ALV_STR-PROHIBIT sy-vline 
WA_/TDAG/CPS_REP_SUBLIST_ALV_STR-DECL sy-vline 
WA_/TDAG/CPS_REP_SUBLIST_ALV_STR-DECLARE sy-vline 
WA_/TDAG/CPS_REP_SUBLIST_ALV_STR-THRE_NUM sy-vline 
WA_/TDAG/CPS_REP_SUBLIST_ALV_STR-THRESHOLD sy-vline 
WA_/TDAG/CPS_REP_SUBLIST_ALV_STR-THRE_UNIT sy-vline 
WA_/TDAG/CPS_REP_SUBLIST_ALV_STR-EXEMPT_KEY sy-vline 
WA_/TDAG/CPS_REP_SUBLIST_ALV_STR-EXEMPT_TXT sy-vline 
WA_/TDAG/CPS_REP_SUBLIST_ALV_STR-AGAINST_PART sy-vline 
WA_/TDAG/CPS_REP_SUBLIST_ALV_STR-AGAINST_PART_TXT sy-vline 
WA_/TDAG/CPS_REP_SUBLIST_ALV_STR-MARKFLG sy-vline      INTO ld_text SEPARATED BY SPACE.

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