ABAP Select data from SAP table CNVTDMS_CR_TRANS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CNVTDMS_CR_TRANS
*  INTO TABLE @DATA(IT_CNVTDMS_CR_TRANS2).
*--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_CNVTDMS_CR_TRANS INDEX 1 INTO DATA(WA_CNVTDMS_CR_TRANS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CNVTDMS_CR_TRANS>-SMOG_TRANS = 1.
<CNVTDMS_CR_TRANS>-SMOG_VERS = 1.
<CNVTDMS_CR_TRANS>-TRANS_ID = 1.
<CNVTDMS_CR_TRANS>-TR_NAME = 1.
<CNVTDMS_CR_TRANS>-TR_GNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CNVTDMS_CR_TRANS-TR_PRIO, sy-vline,
  WA_CNVTDMS_CR_TRANS-TR_RONLY, sy-vline,
  WA_CNVTDMS_CR_TRANS-SMOVERS, sy-vline,
  WA_CNVTDMS_CR_TRANS-SMOACTV, sy-vline,
  WA_CNVTDMS_CR_TRANS-TR_RECOMP, sy-vline,
  WA_CNVTDMS_CR_TRANS-TR_FCT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CNVTDMS_CR_TRANS 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_CNVTDMS_CR_TRANS 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_CNVTDMS_CR_TRANS INTO WA_CNVTDMS_CR_TRANS.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_CNVTDMS_CR_TRANS_STR, 
SMOG_TRANS TYPE STRING,
SMOG_VERS TYPE STRING,
TRANS_ID TYPE STRING,
TR_NAME TYPE STRING,
TR_GNAME TYPE STRING,
TR_PRIO TYPE STRING,
TR_RONLY TYPE STRING,
SMOVERS TYPE STRING,
SMOACTV TYPE STRING,
TR_RECOMP TYPE STRING,
TR_FCT TYPE STRING,
TR_DCLASS TYPE STRING,
APP_DEVC TYPE STRING,
TRANSTYPE TYPE STRING,
TR_ID TYPE STRING,
TR_STATUS TYPE STRING,
REL_DATTYP TYPE STRING,
REL_TRNSID TYPE STRING,
BDOC_CLASS TYPE STRING,
SUBCLASS TYPE STRING,
BDOC_MSGSTR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CNVTDMS_CR_TRANS_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_CNVTDMS_CR_TRANS_STR-SMOG_TRANS sy-vline 
WA_CNVTDMS_CR_TRANS_STR-SMOG_VERS sy-vline 
WA_CNVTDMS_CR_TRANS_STR-TRANS_ID sy-vline 
WA_CNVTDMS_CR_TRANS_STR-TR_NAME sy-vline 
WA_CNVTDMS_CR_TRANS_STR-TR_GNAME sy-vline 
WA_CNVTDMS_CR_TRANS_STR-TR_PRIO sy-vline 
WA_CNVTDMS_CR_TRANS_STR-TR_RONLY sy-vline 
WA_CNVTDMS_CR_TRANS_STR-SMOVERS sy-vline 
WA_CNVTDMS_CR_TRANS_STR-SMOACTV sy-vline 
WA_CNVTDMS_CR_TRANS_STR-TR_RECOMP sy-vline 
WA_CNVTDMS_CR_TRANS_STR-TR_FCT sy-vline 
WA_CNVTDMS_CR_TRANS_STR-TR_DCLASS sy-vline 
WA_CNVTDMS_CR_TRANS_STR-APP_DEVC sy-vline 
WA_CNVTDMS_CR_TRANS_STR-TRANSTYPE sy-vline 
WA_CNVTDMS_CR_TRANS_STR-TR_ID sy-vline 
WA_CNVTDMS_CR_TRANS_STR-TR_STATUS sy-vline 
WA_CNVTDMS_CR_TRANS_STR-REL_DATTYP sy-vline 
WA_CNVTDMS_CR_TRANS_STR-REL_TRNSID sy-vline 
WA_CNVTDMS_CR_TRANS_STR-BDOC_CLASS sy-vline 
WA_CNVTDMS_CR_TRANS_STR-SUBCLASS sy-vline 
WA_CNVTDMS_CR_TRANS_STR-BDOC_MSGSTR sy-vline      INTO ld_text SEPARATED BY SPACE.

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