ABAP Select data from SAP table RN2GL_BADI_REQ into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RN2GL_BADI_REQ 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 RN2GL_BADI_REQ. 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 RN2GL_BADI_REQ 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_RN2GL_BADI_REQ TYPE STANDARD TABLE OF RN2GL_BADI_REQ,
      WA_RN2GL_BADI_REQ TYPE RN2GL_BADI_REQ,
      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: <RN2GL_BADI_REQ> TYPE RN2GL_BADI_REQ.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RN2GL_BADI_REQ.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RN2GL_BADI_REQ
  INTO TABLE IT_RN2GL_BADI_REQ.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RN2GL_BADI_REQ
*  INTO TABLE @DATA(IT_RN2GL_BADI_REQ2).
*--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_RN2GL_BADI_REQ INDEX 1 INTO DATA(WA_RN2GL_BADI_REQ2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RN2GL_BADI_REQ ASSIGNING <RN2GL_BADI_REQ>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RN2GL_BADI_REQ>-EINRI = 1.
<RN2GL_BADI_REQ>-ORGID = 1.
<RN2GL_BADI_REQ>-ANFOE = 1.
<RN2GL_BADI_REQ>-ANPOE = 1.
<RN2GL_BADI_REQ>-ANFTY = 1.

ENDLOOP.

LOOP AT IT_RN2GL_BADI_REQ INTO WA_RN2GL_BADI_REQ.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RN2GL_BADI_REQ-GPART, sy-vline,
  WA_RN2GL_BADI_REQ-KANAM, sy-vline,
  WA_RN2GL_BADI_REQ-FRAGE, sy-vline,
  WA_RN2GL_BADI_REQ-APRIE, sy-vline,
  WA_RN2GL_BADI_REQ-ZWBGDT_OFF, sy-vline,
  WA_RN2GL_BADI_REQ-WBGZT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RN2GL_BADI_REQ 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_RN2GL_BADI_REQ 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_RN2GL_BADI_REQ INTO WA_RN2GL_BADI_REQ.


*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 EINRI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN2GL_BADI_REQ-EINRI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN2GL_BADI_REQ-EINRI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ORGID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN2GL_BADI_REQ-ORGID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN2GL_BADI_REQ-ORGID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ANFOE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN2GL_BADI_REQ-ANFOE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN2GL_BADI_REQ-ANFOE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ANPOE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN2GL_BADI_REQ-ANPOE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN2GL_BADI_REQ-ANPOE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GPART
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN2GL_BADI_REQ-GPART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN2GL_BADI_REQ-GPART.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field FALDIA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN2GL_BADI_REQ-FALDIA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN2GL_BADI_REQ-FALDIA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DOKNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN2GL_BADI_REQ-DOKNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN2GL_BADI_REQ-DOKNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ORGFD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN2GL_BADI_REQ-ORGFD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN2GL_BADI_REQ-ORGFD.
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_RN2GL_BADI_REQ_STR, 
EINRI TYPE STRING,
ORGID TYPE STRING,
ANFOE TYPE STRING,
ANPOE TYPE STRING,
ANFTY TYPE STRING,
GPART TYPE STRING,
KANAM TYPE STRING,
FRAGE TYPE STRING,
APRIE TYPE STRING,
ZWBGDT_OFF TYPE STRING,
WBGZT TYPE STRING,
SEL_SCREEN TYPE STRING,
SERVICES TYPE STRING,
FALDIA TYPE STRING,
LFDDIA TYPE STRING,
SCHWKZ TYPE STRING,
SCHWO TYPE STRING,
TPAE TYPE STRING,
RCKRUF TYPE STRING,
DOKAR TYPE STRING,
DOKNR TYPE STRING,
DOKVR TYPE STRING,
DOKTL TYPE STRING,
BHANF TYPE STRING,
DITXT TYPE STRING,
MI TYPE STRING,
SM TYPE STRING,
KM TYPE STRING,
JOD TYPE STRING,
ANDERE TYPE STRING,
KGR TYPE STRING,
KGEW TYPE STRING,
RP TYPE STRING,
RPID TYPE STRING,
ORGFD TYPE STRING,
KANAM_LT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RN2GL_BADI_REQ_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_RN2GL_BADI_REQ_STR-EINRI sy-vline 
WA_RN2GL_BADI_REQ_STR-ORGID sy-vline 
WA_RN2GL_BADI_REQ_STR-ANFOE sy-vline 
WA_RN2GL_BADI_REQ_STR-ANPOE sy-vline 
WA_RN2GL_BADI_REQ_STR-ANFTY sy-vline 
WA_RN2GL_BADI_REQ_STR-GPART sy-vline 
WA_RN2GL_BADI_REQ_STR-KANAM sy-vline 
WA_RN2GL_BADI_REQ_STR-FRAGE sy-vline 
WA_RN2GL_BADI_REQ_STR-APRIE sy-vline 
WA_RN2GL_BADI_REQ_STR-ZWBGDT_OFF sy-vline 
WA_RN2GL_BADI_REQ_STR-WBGZT sy-vline 
WA_RN2GL_BADI_REQ_STR-SEL_SCREEN sy-vline 
WA_RN2GL_BADI_REQ_STR-SERVICES sy-vline 
WA_RN2GL_BADI_REQ_STR-FALDIA sy-vline 
WA_RN2GL_BADI_REQ_STR-LFDDIA sy-vline 
WA_RN2GL_BADI_REQ_STR-SCHWKZ sy-vline 
WA_RN2GL_BADI_REQ_STR-SCHWO sy-vline 
WA_RN2GL_BADI_REQ_STR-TPAE sy-vline 
WA_RN2GL_BADI_REQ_STR-RCKRUF sy-vline 
WA_RN2GL_BADI_REQ_STR-DOKAR sy-vline 
WA_RN2GL_BADI_REQ_STR-DOKNR sy-vline 
WA_RN2GL_BADI_REQ_STR-DOKVR sy-vline 
WA_RN2GL_BADI_REQ_STR-DOKTL sy-vline 
WA_RN2GL_BADI_REQ_STR-BHANF sy-vline 
WA_RN2GL_BADI_REQ_STR-DITXT sy-vline 
WA_RN2GL_BADI_REQ_STR-MI sy-vline 
WA_RN2GL_BADI_REQ_STR-SM sy-vline 
WA_RN2GL_BADI_REQ_STR-KM sy-vline 
WA_RN2GL_BADI_REQ_STR-JOD sy-vline 
WA_RN2GL_BADI_REQ_STR-ANDERE sy-vline 
WA_RN2GL_BADI_REQ_STR-KGR sy-vline 
WA_RN2GL_BADI_REQ_STR-KGEW sy-vline 
WA_RN2GL_BADI_REQ_STR-RP sy-vline 
WA_RN2GL_BADI_REQ_STR-RPID sy-vline 
WA_RN2GL_BADI_REQ_STR-ORGFD sy-vline 
WA_RN2GL_BADI_REQ_STR-KANAM_LT sy-vline      INTO ld_text SEPARATED BY SPACE.

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