ABAP Select data from SAP table RN2DSCA_CORD_ECGVERB into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RN2DSCA_CORD_ECGVERB 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 RN2DSCA_CORD_ECGVERB. 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 RN2DSCA_CORD_ECGVERB 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_RN2DSCA_CORD_ECGVERB TYPE STANDARD TABLE OF RN2DSCA_CORD_ECGVERB,
      WA_RN2DSCA_CORD_ECGVERB TYPE RN2DSCA_CORD_ECGVERB,
      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: <RN2DSCA_CORD_ECGVERB> TYPE RN2DSCA_CORD_ECGVERB.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RN2DSCA_CORD_ECGVERB.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RN2DSCA_CORD_ECGVERB
  INTO TABLE IT_RN2DSCA_CORD_ECGVERB.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RN2DSCA_CORD_ECGVERB
*  INTO TABLE @DATA(IT_RN2DSCA_CORD_ECGVERB2).
*--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_RN2DSCA_CORD_ECGVERB INDEX 1 INTO DATA(WA_RN2DSCA_CORD_ECGVERB2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RN2DSCA_CORD_ECGVERB ASSIGNING <RN2DSCA_CORD_ECGVERB>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RN2DSCA_CORD_ECGVERB>-MANDT = 1.
<RN2DSCA_CORD_ECGVERB>-CUUID = 1.
<RN2DSCA_CORD_ECGVERB>-XKEMBE = 1.
<RN2DSCA_CORD_ECGVERB>-XDIGIT = 1.
<RN2DSCA_CORD_ECGVERB>-XBETA = 1.

ENDLOOP.

LOOP AT IT_RN2DSCA_CORD_ECGVERB INTO WA_RN2DSCA_CORD_ECGVERB.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RN2DSCA_CORD_ECGVERB-XCAPLU, sy-vline,
  WA_RN2DSCA_CORD_ECGVERB-XANTIA, sy-vline,
  WA_RN2DSCA_CORD_ECGVERB-XANTI2, sy-vline,
  WA_RN2DSCA_CORD_ECGVERB-XPSYCH, sy-vline,
  WA_RN2DSCA_CORD_ECGVERB-MEDSON, sy-vline,
  WA_RN2DSCA_CORD_ECGVERB-ICDTY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RN2DSCA_CORD_ECGVERB 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_RN2DSCA_CORD_ECGVERB 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_RN2DSCA_CORD_ECGVERB INTO WA_RN2DSCA_CORD_ECGVERB.


*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_RN2DSCA_CORD_ECGVERB_STR, 
MANDT TYPE STRING,
CUUID TYPE STRING,
XKEMBE TYPE STRING,
XDIGIT TYPE STRING,
XBETA TYPE STRING,
XCAPLU TYPE STRING,
XANTIA TYPE STRING,
XANTI2 TYPE STRING,
XPSYCH TYPE STRING,
MEDSON TYPE STRING,
ICDTY TYPE STRING,
ICDMO TYPE STRING,
PMTY TYPE STRING,
PMMO TYPE STRING,
ERDAT TYPE STRING,
ERTIM TYPE STRING,
ERUSR TYPE STRING,
UPDAT TYPE STRING,
UPTIM TYPE STRING,
UPUSR TYPE STRING,
STORN TYPE STRING,
STDAT TYPE STRING,
STTIM TYPE STRING,
STUSR TYPE STRING,
KZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RN2DSCA_CORD_ECGVERB_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_RN2DSCA_CORD_ECGVERB_STR-MANDT sy-vline 
WA_RN2DSCA_CORD_ECGVERB_STR-CUUID sy-vline 
WA_RN2DSCA_CORD_ECGVERB_STR-XKEMBE sy-vline 
WA_RN2DSCA_CORD_ECGVERB_STR-XDIGIT sy-vline 
WA_RN2DSCA_CORD_ECGVERB_STR-XBETA sy-vline 
WA_RN2DSCA_CORD_ECGVERB_STR-XCAPLU sy-vline 
WA_RN2DSCA_CORD_ECGVERB_STR-XANTIA sy-vline 
WA_RN2DSCA_CORD_ECGVERB_STR-XANTI2 sy-vline 
WA_RN2DSCA_CORD_ECGVERB_STR-XPSYCH sy-vline 
WA_RN2DSCA_CORD_ECGVERB_STR-MEDSON sy-vline 
WA_RN2DSCA_CORD_ECGVERB_STR-ICDTY sy-vline 
WA_RN2DSCA_CORD_ECGVERB_STR-ICDMO sy-vline 
WA_RN2DSCA_CORD_ECGVERB_STR-PMTY sy-vline 
WA_RN2DSCA_CORD_ECGVERB_STR-PMMO sy-vline 
WA_RN2DSCA_CORD_ECGVERB_STR-ERDAT sy-vline 
WA_RN2DSCA_CORD_ECGVERB_STR-ERTIM sy-vline 
WA_RN2DSCA_CORD_ECGVERB_STR-ERUSR sy-vline 
WA_RN2DSCA_CORD_ECGVERB_STR-UPDAT sy-vline 
WA_RN2DSCA_CORD_ECGVERB_STR-UPTIM sy-vline 
WA_RN2DSCA_CORD_ECGVERB_STR-UPUSR sy-vline 
WA_RN2DSCA_CORD_ECGVERB_STR-STORN sy-vline 
WA_RN2DSCA_CORD_ECGVERB_STR-STDAT sy-vline 
WA_RN2DSCA_CORD_ECGVERB_STR-STTIM sy-vline 
WA_RN2DSCA_CORD_ECGVERB_STR-STUSR sy-vline 
WA_RN2DSCA_CORD_ECGVERB_STR-KZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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