ABAP Select data from SAP table ICAREPAYMENTREQA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICAREPAYMENTREQA
*  INTO TABLE @DATA(IT_ICAREPAYMENTREQA2).
*--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_ICAREPAYMENTREQA INDEX 1 INTO DATA(WA_ICAREPAYMENTREQA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICAREPAYMENTREQA>-MANDT = 1.
<ICAREPAYMENTREQA>-CAREPAYMENTREQUEST = 1.
<ICAREPAYMENTREQA>-LASTNAME = 1.
<ICAREPAYMENTREQA>-FIRSTNAME = 1.
<ICAREPAYMENTREQA>-CITYNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICAREPAYMENTREQA-DISTRICT, sy-vline,
  WA_ICAREPAYMENTREQA-POSTALCODE, sy-vline,
  WA_ICAREPAYMENTREQA-POBOX, sy-vline,
  WA_ICAREPAYMENTREQA-STREETNAME, sy-vline,
  WA_ICAREPAYMENTREQA-HOUSENUMBER, sy-vline,
  WA_ICAREPAYMENTREQA-COUNTRYCODE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICAREPAYMENTREQA 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_ICAREPAYMENTREQA 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_ICAREPAYMENTREQA INTO WA_ICAREPAYMENTREQA.


*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 ALPHA, internal->external for field CAREPAYMENTREQUEST
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICAREPAYMENTREQA-CAREPAYMENTREQUEST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICAREPAYMENTREQA-CAREPAYMENTREQUEST.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SEGMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICAREPAYMENTREQA-SEGMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICAREPAYMENTREQA-SEGMENT.
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_ICAREPAYMENTREQA_STR, 
MANDT TYPE STRING,
CAREPAYMENTREQUEST TYPE STRING,
LASTNAME TYPE STRING,
FIRSTNAME TYPE STRING,
CITYNAME TYPE STRING,
DISTRICT TYPE STRING,
POSTALCODE TYPE STRING,
POBOX TYPE STRING,
STREETNAME TYPE STRING,
HOUSENUMBER TYPE STRING,
COUNTRYCODE TYPE STRING,
POBOXPOSTALCODE TYPE STRING,
POBOXCITYNAME TYPE STRING,
REGIONNAME TYPE STRING,
COMPANYCODE TYPE STRING,
BUSINESSAREA TYPE STRING,
SEGMENT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICAREPAYMENTREQA_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_ICAREPAYMENTREQA_STR-MANDT sy-vline 
WA_ICAREPAYMENTREQA_STR-CAREPAYMENTREQUEST sy-vline 
WA_ICAREPAYMENTREQA_STR-LASTNAME sy-vline 
WA_ICAREPAYMENTREQA_STR-FIRSTNAME sy-vline 
WA_ICAREPAYMENTREQA_STR-CITYNAME sy-vline 
WA_ICAREPAYMENTREQA_STR-DISTRICT sy-vline 
WA_ICAREPAYMENTREQA_STR-POSTALCODE sy-vline 
WA_ICAREPAYMENTREQA_STR-POBOX sy-vline 
WA_ICAREPAYMENTREQA_STR-STREETNAME sy-vline 
WA_ICAREPAYMENTREQA_STR-HOUSENUMBER sy-vline 
WA_ICAREPAYMENTREQA_STR-COUNTRYCODE sy-vline 
WA_ICAREPAYMENTREQA_STR-POBOXPOSTALCODE sy-vline 
WA_ICAREPAYMENTREQA_STR-POBOXCITYNAME sy-vline 
WA_ICAREPAYMENTREQA_STR-REGIONNAME sy-vline 
WA_ICAREPAYMENTREQA_STR-COMPANYCODE sy-vline 
WA_ICAREPAYMENTREQA_STR-BUSINESSAREA sy-vline 
WA_ICAREPAYMENTREQA_STR-SEGMENT sy-vline      INTO ld_text SEPARATED BY SPACE.

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