ABAP Select data from SAP table FIARQA_S_CRV_HEADER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FIARQA_S_CRV_HEADER
*  INTO TABLE @DATA(IT_FIARQA_S_CRV_HEADER2).
*--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_FIARQA_S_CRV_HEADER INDEX 1 INTO DATA(WA_FIARQA_S_CRV_HEADER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FIARQA_S_CRV_HEADER>-BUTXT = 1.
<FIARQA_S_CRV_HEADER>-WAERS = 1.
<FIARQA_S_CRV_HEADER>-NAME1 = 1.
<FIARQA_S_CRV_HEADER>-BELNRR = 1.
<FIARQA_S_CRV_HEADER>-BUDAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FIARQA_S_CRV_HEADER-RVSTAT, sy-vline,
  WA_FIARQA_S_CRV_HEADER-WRBTR, sy-vline,
  WA_FIARQA_S_CRV_HEADER-OPENAMT, sy-vline,
  WA_FIARQA_S_CRV_HEADER-CLRAMT, sy-vline,
  WA_FIARQA_S_CRV_HEADER-BUKRS, sy-vline,
  WA_FIARQA_S_CRV_HEADER-KUNNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FIARQA_S_CRV_HEADER 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_FIARQA_S_CRV_HEADER 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_FIARQA_S_CRV_HEADER INTO WA_FIARQA_S_CRV_HEADER.


*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 BELNRR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FIARQA_S_CRV_HEADER-BELNRR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIARQA_S_CRV_HEADER-BELNRR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field BELNRC
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FIARQA_S_CRV_HEADER-BELNRC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIARQA_S_CRV_HEADER-BELNRC.
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_FIARQA_S_CRV_HEADER_STR, 
BUTXT TYPE STRING,
WAERS TYPE STRING,
NAME1 TYPE STRING,
BELNRR TYPE STRING,
BUDAT TYPE STRING,
RVSTAT TYPE STRING,
WRBTR TYPE STRING,
OPENAMT TYPE STRING,
CLRAMT TYPE STRING,
BUKRS TYPE STRING,
KUNNR TYPE STRING,
BELNRC TYPE STRING,
MOFNO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FIARQA_S_CRV_HEADER_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_FIARQA_S_CRV_HEADER_STR-BUTXT sy-vline 
WA_FIARQA_S_CRV_HEADER_STR-WAERS sy-vline 
WA_FIARQA_S_CRV_HEADER_STR-NAME1 sy-vline 
WA_FIARQA_S_CRV_HEADER_STR-BELNRR sy-vline 
WA_FIARQA_S_CRV_HEADER_STR-BUDAT sy-vline 
WA_FIARQA_S_CRV_HEADER_STR-RVSTAT sy-vline 
WA_FIARQA_S_CRV_HEADER_STR-WRBTR sy-vline 
WA_FIARQA_S_CRV_HEADER_STR-OPENAMT sy-vline 
WA_FIARQA_S_CRV_HEADER_STR-CLRAMT sy-vline 
WA_FIARQA_S_CRV_HEADER_STR-BUKRS sy-vline 
WA_FIARQA_S_CRV_HEADER_STR-KUNNR sy-vline 
WA_FIARQA_S_CRV_HEADER_STR-BELNRC sy-vline 
WA_FIARQA_S_CRV_HEADER_STR-MOFNO sy-vline      INTO ld_text SEPARATED BY SPACE.

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