ABAP Select data from SAP table FINST_RECERR_GEN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FINST_RECERR_GEN
*  INTO TABLE @DATA(IT_FINST_RECERR_GEN2).
*--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_FINST_RECERR_GEN INDEX 1 INTO DATA(WA_FINST_RECERR_GEN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FINST_RECERR_GEN>-MANDT = 1.
<FINST_RECERR_GEN>-SET_ID = 1.
<FINST_RECERR_GEN>-STEP_ID = 1.
<FINST_RECERR_GEN>-RUN_ID = 1.
<FINST_RECERR_GEN>-BUKRS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FINST_RECERR_GEN-GJAHR, sy-vline,
  WA_FINST_RECERR_GEN-ID, sy-vline,
  WA_FINST_RECERR_GEN-MSGTY, sy-vline,
  WA_FINST_RECERR_GEN-MSGID, sy-vline,
  WA_FINST_RECERR_GEN-MSGNO, sy-vline,
  WA_FINST_RECERR_GEN-MSGV1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FINST_RECERR_GEN 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_FINST_RECERR_GEN 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_FINST_RECERR_GEN INTO WA_FINST_RECERR_GEN.


*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 GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FINST_RECERR_GEN-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FINST_RECERR_GEN-GJAHR.
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_FINST_RECERR_GEN_STR, 
MANDT TYPE STRING,
SET_ID TYPE STRING,
STEP_ID TYPE STRING,
RUN_ID TYPE STRING,
BUKRS TYPE STRING,
GJAHR TYPE STRING,
ID TYPE STRING,
MSGTY TYPE STRING,
MSGID TYPE STRING,
MSGNO TYPE STRING,
MSGV1 TYPE STRING,
MSGV2 TYPE STRING,
MSGV3 TYPE STRING,
MSGV4 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FINST_RECERR_GEN_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_FINST_RECERR_GEN_STR-MANDT sy-vline 
WA_FINST_RECERR_GEN_STR-SET_ID sy-vline 
WA_FINST_RECERR_GEN_STR-STEP_ID sy-vline 
WA_FINST_RECERR_GEN_STR-RUN_ID sy-vline 
WA_FINST_RECERR_GEN_STR-BUKRS sy-vline 
WA_FINST_RECERR_GEN_STR-GJAHR sy-vline 
WA_FINST_RECERR_GEN_STR-ID sy-vline 
WA_FINST_RECERR_GEN_STR-MSGTY sy-vline 
WA_FINST_RECERR_GEN_STR-MSGID sy-vline 
WA_FINST_RECERR_GEN_STR-MSGNO sy-vline 
WA_FINST_RECERR_GEN_STR-MSGV1 sy-vline 
WA_FINST_RECERR_GEN_STR-MSGV2 sy-vline 
WA_FINST_RECERR_GEN_STR-MSGV3 sy-vline 
WA_FINST_RECERR_GEN_STR-MSGV4 sy-vline      INTO ld_text SEPARATED BY SPACE.

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