ABAP Select data from SAP table RNWCH_EDI_TREATMENT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RNWCH_EDI_TREATMENT
*  INTO TABLE @DATA(IT_RNWCH_EDI_TREATMENT2).
*--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_RNWCH_EDI_TREATMENT INDEX 1 INTO DATA(WA_RNWCH_EDI_TREATMENT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RNWCH_EDI_TREATMENT>-CASE_TYPE = 1.
<RNWCH_EDI_TREATMENT>-CASE_TYPE_C = 1.
<RNWCH_EDI_TREATMENT>-BEGIN_DATE = 1.
<RNWCH_EDI_TREATMENT>-BEGIN_TIME = 1.
<RNWCH_EDI_TREATMENT>-BEGIN_DATETIME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RNWCH_EDI_TREATMENT-END_DATE, sy-vline,
  WA_RNWCH_EDI_TREATMENT-END_TIME, sy-vline,
  WA_RNWCH_EDI_TREATMENT-END_DATETIME, sy-vline,
  WA_RNWCH_EDI_TREATMENT-CANTON, sy-vline,
  WA_RNWCH_EDI_TREATMENT-REASON, sy-vline,
  WA_RNWCH_EDI_TREATMENT-REASON_P, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RNWCH_EDI_TREATMENT 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_RNWCH_EDI_TREATMENT 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_RNWCH_EDI_TREATMENT INTO WA_RNWCH_EDI_TREATMENT.


*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_RNWCH_EDI_TREATMENT_STR, 
CASE_TYPE TYPE STRING,
CASE_TYPE_C TYPE STRING,
BEGIN_DATE TYPE STRING,
BEGIN_TIME TYPE STRING,
BEGIN_DATETIME TYPE STRING,
END_DATE TYPE STRING,
END_TIME TYPE STRING,
END_DATETIME TYPE STRING,
CANTON TYPE STRING,
REASON TYPE STRING,
REASON_P TYPE STRING,
HOSPITALIZATION_TYPE TYPE STRING,
HOSPITALIZATION_TYPE_P TYPE STRING,
HOSPITALIZATION_MODE TYPE STRING,
HOSPITALIZATION_MODE_P TYPE STRING,
HOSPITALIZATION_DATE TYPE STRING,
HOSPITALIZATION_TIME TYPE STRING,
HOSPITALIZATION_DATETIME TYPE STRING,
CLASS TYPE STRING,
CLASS_P TYPE STRING,
SECTION_MAJOR TYPE STRING,
SECTION_NAME TYPE STRING,
TREATMENT_DAYS TYPE STRING,
TREATMENT_DAYS_C TYPE STRING,
HAS_EXPENSE_LOADING TYPE STRING,
ADMISSION_TYPE TYPE STRING,
ADMISSION_TYPE_P TYPE STRING,
DISCHARGE_TYPE TYPE STRING,
DISCHARGE_TYPE_P TYPE STRING,
RELAPSE TYPE STRING,
INSURANCE_MODEL TYPE STRING,
TREATMENT_UNITS TYPE STRING,
APID TYPE STRING,
ACID TYPE STRING,
DO_COST_AS TYPE STRING,
COST_FRACT TYPE STRING,
ADM_TYP_C TYPE STRING,
ADM_TYP_T TYPE STRING,
DIS_TYP_C TYPE STRING,
DIS_TYP_T TYPE STRING,
PROV_TYP_C TYPE STRING,
PROV_TYP_T TYPE STRING,
BFS_RBA_C TYPE STRING,
BFS_RBA_T TYPE STRING,
BFS_ATY_C TYPE STRING,
BFS_ATY_T TYPE STRING,
BFS_DFD_C TYPE STRING,
BFS_DFD_T TYPE STRING,
BFS_RAD_C TYPE STRING,
BFS_RAD_T TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RNWCH_EDI_TREATMENT_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_RNWCH_EDI_TREATMENT_STR-CASE_TYPE sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-CASE_TYPE_C sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-BEGIN_DATE sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-BEGIN_TIME sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-BEGIN_DATETIME sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-END_DATE sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-END_TIME sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-END_DATETIME sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-CANTON sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-REASON sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-REASON_P sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-HOSPITALIZATION_TYPE sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-HOSPITALIZATION_TYPE_P sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-HOSPITALIZATION_MODE sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-HOSPITALIZATION_MODE_P sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-HOSPITALIZATION_DATE sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-HOSPITALIZATION_TIME sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-HOSPITALIZATION_DATETIME sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-CLASS sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-CLASS_P sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-SECTION_MAJOR sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-SECTION_NAME sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-TREATMENT_DAYS sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-TREATMENT_DAYS_C sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-HAS_EXPENSE_LOADING sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-ADMISSION_TYPE sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-ADMISSION_TYPE_P sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-DISCHARGE_TYPE sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-DISCHARGE_TYPE_P sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-RELAPSE sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-INSURANCE_MODEL sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-TREATMENT_UNITS sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-APID sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-ACID sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-DO_COST_AS sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-COST_FRACT sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-ADM_TYP_C sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-ADM_TYP_T sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-DIS_TYP_C sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-DIS_TYP_T sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-PROV_TYP_C sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-PROV_TYP_T sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-BFS_RBA_C sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-BFS_RBA_T sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-BFS_ATY_C sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-BFS_ATY_T sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-BFS_DFD_C sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-BFS_DFD_T sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-BFS_RAD_C sy-vline 
WA_RNWCH_EDI_TREATMENT_STR-BFS_RAD_T sy-vline      INTO ld_text SEPARATED BY SPACE.

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