ABAP Select data from SAP table ROIRHDTFK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ROIRHDTFK
*  INTO TABLE @DATA(IT_ROIRHDTFK2).
*--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_ROIRHDTFK INDEX 1 INTO DATA(WA_ROIRHDTFK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ROIRHDTFK>-MANDT = 1.
<ROIRHDTFK>-GJAHR = 1.
<ROIRHDTFK>-UPLNR = 1.
<ROIRHDTFK>-UPLDAT = 1.
<ROIRHDTFK>-UPLTIM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ROIRHDTFK-PBLNR, sy-vline,
  WA_ROIRHDTFK-TERMID, sy-vline,
  WA_ROIRHDTFK-TERMNR, sy-vline,
  WA_ROIRHDTFK-CASHIER, sy-vline,
  WA_ROIRHDTFK-CSHNAME, sy-vline,
  WA_ROIRHDTFK-VKDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ROIRHDTFK 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_ROIRHDTFK 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_ROIRHDTFK INTO WA_ROIRHDTFK.


*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_ROIRHDTFK-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIRHDTFK-GJAHR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit GJAHR, internal->external for field LINKYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_ROIRHDTFK-LINKYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIRHDTFK-LINKYEAR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field RECON_NO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ROIRHDTFK-RECON_NO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIRHDTFK-RECON_NO.
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_ROIRHDTFK_STR, 
MANDT TYPE STRING,
GJAHR TYPE STRING,
UPLNR TYPE STRING,
UPLDAT TYPE STRING,
UPLTIM TYPE STRING,
PBLNR TYPE STRING,
TERMID TYPE STRING,
TERMNR TYPE STRING,
CASHIER TYPE STRING,
CSHNAME TYPE STRING,
VKDAT TYPE STRING,
VKTIM TYPE STRING,
CCNUM TYPE STRING,
SSR_CCINS TYPE STRING,
SSR_ADDINFO TYPE STRING,
SSR_CCTYP TYPE STRING,
CCFOL TYPE STRING,
DATAB TYPE STRING,
DATBI TYPE STRING,
AUTNR TYPE STRING,
BLVER TYPE STRING,
BLDAT TYPE STRING,
BRTWR TYPE STRING,
WAERS TYPE STRING,
CGUID TYPE STRING,
ENCTP TYPE STRING,
CRYPTIC_HASH TYPE STRING,
TRCNR TYPE STRING,
AID TYPE STRING,
AIDPA TYPE STRING,
ECTYP TYPE STRING,
ECFOL TYPE STRING,
ECBHS TYPE STRING,
ECBLZ TYPE STRING,
ECSEP TYPE STRING,
ECKTO TYPE STRING,
ECPRZ TYPE STRING,
ISSUER TYPE STRING,
MILES TYPE STRING,
VEHICLE TYPE STRING,
DRIVER TYPE STRING,
VAL_ROUTINE TYPE STRING,
SPRES TYPE STRING,
COMPFL TYPE STRING,
COMPRES TYPE STRING,
STORNO TYPE STRING,
SRCID TYPE STRING,
DCIND TYPE STRING,
STFLG TYPE STRING,
SLSTA TYPE STRING,
WROFLAG TYPE STRING,
LINKYEAR TYPE STRING,
LINKNR TYPE STRING,
SETTLDAT TYPE STRING,
SETTLNR TYPE STRING,
SETTITEM TYPE STRING,
TRNSMNR TYPE STRING,
DTFNR TYPE STRING,
CHOBJ TYPE STRING,
RECON_NO TYPE STRING,
RECON_DAT TYPE STRING,
ERDAT TYPE STRING,
ERTIM TYPE STRING,
ERNAM TYPE STRING,
AEDAT TYPE STRING,
AETIM TYPE STRING,
AENAM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ROIRHDTFK_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_ROIRHDTFK_STR-MANDT sy-vline 
WA_ROIRHDTFK_STR-GJAHR sy-vline 
WA_ROIRHDTFK_STR-UPLNR sy-vline 
WA_ROIRHDTFK_STR-UPLDAT sy-vline 
WA_ROIRHDTFK_STR-UPLTIM sy-vline 
WA_ROIRHDTFK_STR-PBLNR sy-vline 
WA_ROIRHDTFK_STR-TERMID sy-vline 
WA_ROIRHDTFK_STR-TERMNR sy-vline 
WA_ROIRHDTFK_STR-CASHIER sy-vline 
WA_ROIRHDTFK_STR-CSHNAME sy-vline 
WA_ROIRHDTFK_STR-VKDAT sy-vline 
WA_ROIRHDTFK_STR-VKTIM sy-vline 
WA_ROIRHDTFK_STR-CCNUM sy-vline 
WA_ROIRHDTFK_STR-SSR_CCINS sy-vline 
WA_ROIRHDTFK_STR-SSR_ADDINFO sy-vline 
WA_ROIRHDTFK_STR-SSR_CCTYP sy-vline 
WA_ROIRHDTFK_STR-CCFOL sy-vline 
WA_ROIRHDTFK_STR-DATAB sy-vline 
WA_ROIRHDTFK_STR-DATBI sy-vline 
WA_ROIRHDTFK_STR-AUTNR sy-vline 
WA_ROIRHDTFK_STR-BLVER sy-vline 
WA_ROIRHDTFK_STR-BLDAT sy-vline 
WA_ROIRHDTFK_STR-BRTWR sy-vline 
WA_ROIRHDTFK_STR-WAERS sy-vline 
WA_ROIRHDTFK_STR-CGUID sy-vline 
WA_ROIRHDTFK_STR-ENCTP sy-vline 
WA_ROIRHDTFK_STR-CRYPTIC_HASH sy-vline 
WA_ROIRHDTFK_STR-TRCNR sy-vline 
WA_ROIRHDTFK_STR-AID sy-vline 
WA_ROIRHDTFK_STR-AIDPA sy-vline 
WA_ROIRHDTFK_STR-ECTYP sy-vline 
WA_ROIRHDTFK_STR-ECFOL sy-vline 
WA_ROIRHDTFK_STR-ECBHS sy-vline 
WA_ROIRHDTFK_STR-ECBLZ sy-vline 
WA_ROIRHDTFK_STR-ECSEP sy-vline 
WA_ROIRHDTFK_STR-ECKTO sy-vline 
WA_ROIRHDTFK_STR-ECPRZ sy-vline 
WA_ROIRHDTFK_STR-ISSUER sy-vline 
WA_ROIRHDTFK_STR-MILES sy-vline 
WA_ROIRHDTFK_STR-VEHICLE sy-vline 
WA_ROIRHDTFK_STR-DRIVER sy-vline 
WA_ROIRHDTFK_STR-VAL_ROUTINE sy-vline 
WA_ROIRHDTFK_STR-SPRES sy-vline 
WA_ROIRHDTFK_STR-COMPFL sy-vline 
WA_ROIRHDTFK_STR-COMPRES sy-vline 
WA_ROIRHDTFK_STR-STORNO sy-vline 
WA_ROIRHDTFK_STR-SRCID sy-vline 
WA_ROIRHDTFK_STR-DCIND sy-vline 
WA_ROIRHDTFK_STR-STFLG sy-vline 
WA_ROIRHDTFK_STR-SLSTA sy-vline 
WA_ROIRHDTFK_STR-WROFLAG sy-vline 
WA_ROIRHDTFK_STR-LINKYEAR sy-vline 
WA_ROIRHDTFK_STR-LINKNR sy-vline 
WA_ROIRHDTFK_STR-SETTLDAT sy-vline 
WA_ROIRHDTFK_STR-SETTLNR sy-vline 
WA_ROIRHDTFK_STR-SETTITEM sy-vline 
WA_ROIRHDTFK_STR-TRNSMNR sy-vline 
WA_ROIRHDTFK_STR-DTFNR sy-vline 
WA_ROIRHDTFK_STR-CHOBJ sy-vline 
WA_ROIRHDTFK_STR-RECON_NO sy-vline 
WA_ROIRHDTFK_STR-RECON_DAT sy-vline 
WA_ROIRHDTFK_STR-ERDAT sy-vline 
WA_ROIRHDTFK_STR-ERTIM sy-vline 
WA_ROIRHDTFK_STR-ERNAM sy-vline 
WA_ROIRHDTFK_STR-AEDAT sy-vline 
WA_ROIRHDTFK_STR-AETIM sy-vline 
WA_ROIRHDTFK_STR-AENAM sy-vline      INTO ld_text SEPARATED BY SPACE.

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