ABAP Select data from SAP table /CPD/S_RM_DESC_TX into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /CPD/S_RM_DESC_TX
*  INTO TABLE @DATA(IT_/CPD/S_RM_DESC_TX2).
*--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_/CPD/S_RM_DESC_TX INDEX 1 INTO DATA(WA_/CPD/S_RM_DESC_TX2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</CPD/S_RM_DESC_TX>-SORT_NUMBER = 1.
</CPD/S_RM_DESC_TX>-KEY = 1.
</CPD/S_RM_DESC_TX>-PARENT_KEY = 1.
</CPD/S_RM_DESC_TX>-ROOT_KEY = 1.
</CPD/S_RM_DESC_TX>-LANGU = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/CPD/S_RM_DESC_TX-TEXT, sy-vline,
  WA_/CPD/S_RM_DESC_TX-LTXT_TC_TXT_UUID, sy-vline,
  WA_/CPD/S_RM_DESC_TX-CREATED_BY, sy-vline,
  WA_/CPD/S_RM_DESC_TX-CREATED_ON, sy-vline,
  WA_/CPD/S_RM_DESC_TX-CREATED_ON_INT_LONG, sy-vline,
  WA_/CPD/S_RM_DESC_TX-I_DESC_TXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/CPD/S_RM_DESC_TX 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_/CPD/S_RM_DESC_TX 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_/CPD/S_RM_DESC_TX INTO WA_/CPD/S_RM_DESC_TX.


*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 ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_/CPD/S_RM_DESC_TX-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/CPD/S_RM_DESC_TX-LANGU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTLC, internal->external for field CREATED_ON
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_/CPD/S_RM_DESC_TX-CREATED_ON
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/CPD/S_RM_DESC_TX-CREATED_ON.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTLC, internal->external for field LONG_TEXT_DATETIME_CR
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_/CPD/S_RM_DESC_TX-LONG_TEXT_DATETIME_CR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/CPD/S_RM_DESC_TX-LONG_TEXT_DATETIME_CR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTLC, internal->external for field LONG_TEXT_DATETIME_CH
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_/CPD/S_RM_DESC_TX-LONG_TEXT_DATETIME_CH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/CPD/S_RM_DESC_TX-LONG_TEXT_DATETIME_CH.
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_/CPD/S_RM_DESC_TX_STR, 
SORT_NUMBER TYPE STRING,
KEY TYPE STRING,
PARENT_KEY TYPE STRING,
ROOT_KEY TYPE STRING,
LANGU TYPE STRING,
TEXT TYPE STRING,
LTXT_TC_TXT_UUID TYPE STRING,
CREATED_BY TYPE STRING,
CREATED_ON TYPE STRING,
CREATED_ON_INT_LONG TYPE STRING,
I_DESC_TXT TYPE STRING,
LONG_TEXT_FORMATTED TYPE STRING,
LONG_TEXT_RAW TYPE STRING,
LONG_TEXT_DATETIME_CR TYPE STRING,
LONG_TEXT_FULLNAME_CR TYPE STRING,
LONG_TEXT_DATETIME_CH TYPE STRING,
LONG_TEXT_FULLNAME_CH TYPE STRING,
LONG_TEXT_CR_DATE TYPE STRING,
LONG_TEXT_CR_TIME TYPE STRING,
TEMPORARY_INSTANCE TYPE STRING,
I_DESC_TXT_TR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/CPD/S_RM_DESC_TX_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_/CPD/S_RM_DESC_TX_STR-SORT_NUMBER sy-vline 
WA_/CPD/S_RM_DESC_TX_STR-KEY sy-vline 
WA_/CPD/S_RM_DESC_TX_STR-PARENT_KEY sy-vline 
WA_/CPD/S_RM_DESC_TX_STR-ROOT_KEY sy-vline 
WA_/CPD/S_RM_DESC_TX_STR-LANGU sy-vline 
WA_/CPD/S_RM_DESC_TX_STR-TEXT sy-vline 
WA_/CPD/S_RM_DESC_TX_STR-LTXT_TC_TXT_UUID sy-vline 
WA_/CPD/S_RM_DESC_TX_STR-CREATED_BY sy-vline 
WA_/CPD/S_RM_DESC_TX_STR-CREATED_ON sy-vline 
WA_/CPD/S_RM_DESC_TX_STR-CREATED_ON_INT_LONG sy-vline 
WA_/CPD/S_RM_DESC_TX_STR-I_DESC_TXT sy-vline 
WA_/CPD/S_RM_DESC_TX_STR-LONG_TEXT_FORMATTED sy-vline 
WA_/CPD/S_RM_DESC_TX_STR-LONG_TEXT_RAW sy-vline 
WA_/CPD/S_RM_DESC_TX_STR-LONG_TEXT_DATETIME_CR sy-vline 
WA_/CPD/S_RM_DESC_TX_STR-LONG_TEXT_FULLNAME_CR sy-vline 
WA_/CPD/S_RM_DESC_TX_STR-LONG_TEXT_DATETIME_CH sy-vline 
WA_/CPD/S_RM_DESC_TX_STR-LONG_TEXT_FULLNAME_CH sy-vline 
WA_/CPD/S_RM_DESC_TX_STR-LONG_TEXT_CR_DATE sy-vline 
WA_/CPD/S_RM_DESC_TX_STR-LONG_TEXT_CR_TIME sy-vline 
WA_/CPD/S_RM_DESC_TX_STR-TEMPORARY_INSTANCE sy-vline 
WA_/CPD/S_RM_DESC_TX_STR-I_DESC_TXT_TR sy-vline      INTO ld_text SEPARATED BY SPACE.

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