ABAP Select data from SAP table RNEHC_INS_CH into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RNEHC_INS_CH
*  INTO TABLE @DATA(IT_RNEHC_INS_CH2).
*--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_RNEHC_INS_CH INDEX 1 INTO DATA(WA_RNEHC_INS_CH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RNEHC_INS_CH>-BAG = 1.
<RNEHC_INS_CH>-EANR = 1.
<RNEHC_INS_CH>-INSFORM = 1.
<RNEHC_INS_CH>-INSFORM_TEXT = 1.
<RNEHC_INS_CH>-CANTON = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RNEHC_INS_CH-ACCIDENT, sy-vline,
  WA_RNEHC_INS_CH-SERVDEF, sy-vline,
  WA_RNEHC_INS_CH-VVG_EXIST, sy-vline,
  WA_RNEHC_INS_CH-BASEINS, sy-vline,
  WA_RNEHC_INS_CH-DESCRIPTION, sy-vline,
  WA_RNEHC_INS_CH-PHONE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RNEHC_INS_CH 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_RNEHC_INS_CH 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_RNEHC_INS_CH INTO WA_RNEHC_INS_CH.


*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_RNEHC_INS_CH_STR, 
BAG TYPE STRING,
EANR TYPE STRING,
INSFORM TYPE STRING,
INSFORM_TEXT TYPE STRING,
CANTON TYPE STRING,
ACCIDENT TYPE STRING,
SERVDEF TYPE STRING,
VVG_EXIST TYPE STRING,
BASEINS TYPE STRING,
DESCRIPTION TYPE STRING,
PHONE TYPE STRING,
EMAIL TYPE STRING,
NAME1 TYPE STRING,
NAME2 TYPE STRING,
INS_POST_CODE TYPE STRING,
INS_CITY TYPE STRING,
INS_COUNTRY TYPE STRING,
INS_STREET TYPE STRING,
INS_HOUSE_NUM TYPE STRING,
INS_STREET_SUPPL TYPE STRING,
INS_LOCATION TYPE STRING,
INS_PO_BOX TYPE STRING,
INS_PO_BOX_TEXT TYPE STRING,
INS_POST_CODE3 TYPE STRING,
MDELAY TYPE STRING,
MEDHORS TYPE STRING,
UMEDHORS TYPE STRING,
MEDKOMP TYPE STRING,
UMEDKOMP TYPE STRING,
SPITABT TYPE STRING,
SPITMOD TYPE STRING,
USPITVERS TYPE STRING,
COVINT_DRUGS TYPE STRING,
COVINT_HOSP TYPE STRING,
DATEOFIMPORT TYPE STRING,
TIMEOFIMPORT TYPE STRING,
REMARK_KVG TYPE STRING,
REMARK_HOSP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RNEHC_INS_CH_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_RNEHC_INS_CH_STR-BAG sy-vline 
WA_RNEHC_INS_CH_STR-EANR sy-vline 
WA_RNEHC_INS_CH_STR-INSFORM sy-vline 
WA_RNEHC_INS_CH_STR-INSFORM_TEXT sy-vline 
WA_RNEHC_INS_CH_STR-CANTON sy-vline 
WA_RNEHC_INS_CH_STR-ACCIDENT sy-vline 
WA_RNEHC_INS_CH_STR-SERVDEF sy-vline 
WA_RNEHC_INS_CH_STR-VVG_EXIST sy-vline 
WA_RNEHC_INS_CH_STR-BASEINS sy-vline 
WA_RNEHC_INS_CH_STR-DESCRIPTION sy-vline 
WA_RNEHC_INS_CH_STR-PHONE sy-vline 
WA_RNEHC_INS_CH_STR-EMAIL sy-vline 
WA_RNEHC_INS_CH_STR-NAME1 sy-vline 
WA_RNEHC_INS_CH_STR-NAME2 sy-vline 
WA_RNEHC_INS_CH_STR-INS_POST_CODE sy-vline 
WA_RNEHC_INS_CH_STR-INS_CITY sy-vline 
WA_RNEHC_INS_CH_STR-INS_COUNTRY sy-vline 
WA_RNEHC_INS_CH_STR-INS_STREET sy-vline 
WA_RNEHC_INS_CH_STR-INS_HOUSE_NUM sy-vline 
WA_RNEHC_INS_CH_STR-INS_STREET_SUPPL sy-vline 
WA_RNEHC_INS_CH_STR-INS_LOCATION sy-vline 
WA_RNEHC_INS_CH_STR-INS_PO_BOX sy-vline 
WA_RNEHC_INS_CH_STR-INS_PO_BOX_TEXT sy-vline 
WA_RNEHC_INS_CH_STR-INS_POST_CODE3 sy-vline 
WA_RNEHC_INS_CH_STR-MDELAY sy-vline 
WA_RNEHC_INS_CH_STR-MEDHORS sy-vline 
WA_RNEHC_INS_CH_STR-UMEDHORS sy-vline 
WA_RNEHC_INS_CH_STR-MEDKOMP sy-vline 
WA_RNEHC_INS_CH_STR-UMEDKOMP sy-vline 
WA_RNEHC_INS_CH_STR-SPITABT sy-vline 
WA_RNEHC_INS_CH_STR-SPITMOD sy-vline 
WA_RNEHC_INS_CH_STR-USPITVERS sy-vline 
WA_RNEHC_INS_CH_STR-COVINT_DRUGS sy-vline 
WA_RNEHC_INS_CH_STR-COVINT_HOSP sy-vline 
WA_RNEHC_INS_CH_STR-DATEOFIMPORT sy-vline 
WA_RNEHC_INS_CH_STR-TIMEOFIMPORT sy-vline 
WA_RNEHC_INS_CH_STR-REMARK_KVG sy-vline 
WA_RNEHC_INS_CH_STR-REMARK_HOSP sy-vline      INTO ld_text SEPARATED BY SPACE.

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