ABAP Select data from SAP table OIU_RV_CLT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM OIU_RV_CLT
*  INTO TABLE @DATA(IT_OIU_RV_CLT2).
*--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_OIU_RV_CLT INDEX 1 INTO DATA(WA_OIU_RV_CLT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<OIU_RV_CLT>-OIU_INTRA_INTER = 1.
<OIU_RV_CLT>-OIU_EXRES_SPLT = 1.
<OIU_RV_CLT>-OIU_EVGN_FL = 1.
<OIU_RV_CLT>-OIU_EVGNPD_BAS = 1.
<OIU_RV_CLT>-OIU_EVGN_PERD_QY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_OIU_RV_CLT-OIU_PREIM_TM_CD, sy-vline,
  WA_OIU_RV_CLT-OIU_PRIM_TM_QY, sy-vline,
  WA_OIU_RV_CLT-OIU_SEC_TM_CD, sy-vline,
  WA_OIU_RV_CLT-OIU_SEC_TM_QY, sy-vline,
  WA_OIU_RV_CLT-OIU_EXP_NOTIF_DT, sy-vline,
  WA_OIU_RV_CLT-OIU_INTIT_RDT_DT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_OIU_RV_CLT 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_OIU_RV_CLT 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_OIU_RV_CLT INTO WA_OIU_RV_CLT.


*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 MATN1, internal->external for field OIU_CON_MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_OIU_RV_CLT-OIU_CON_MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OIU_RV_CLT-OIU_CON_MATNR.
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_OIU_RV_CLT_STR, 
OIU_INTRA_INTER TYPE STRING,
OIU_EXRES_SPLT TYPE STRING,
OIU_EVGN_FL TYPE STRING,
OIU_EVGNPD_BAS TYPE STRING,
OIU_EVGN_PERD_QY TYPE STRING,
OIU_PREIM_TM_CD TYPE STRING,
OIU_PRIM_TM_QY TYPE STRING,
OIU_SEC_TM_CD TYPE STRING,
OIU_SEC_TM_QY TYPE STRING,
OIU_EXP_NOTIF_DT TYPE STRING,
OIU_INTIT_RDT_DT TYPE STRING,
OIU_NEXT_RDT_DT TYPE STRING,
OIU_RTC_DT TYPE STRING,
OIU_RDT_N_PERD TYPE STRING,
OIU_RDT_REFQ_CD TYPE STRING,
OIU_RTF_CD TYPE STRING,
OIU_IMB_PRVSN_FL TYPE STRING,
OIU_FFEE_RMB_FL TYPE STRING,
OIU_FIRM_INTRPT TYPE STRING,
OIU_BAL_BAS_CD TYPE STRING,
OIU_PNTY_BAS_CD TYPE STRING,
OIU_TRANSP_BA TYPE STRING,
OIU_DLY_MAX_T_QY TYPE STRING,
OIU_PRCS_FL TYPE STRING,
OIU_SPR_FL TYPE STRING,
OIU_DEHYD_FL TYPE STRING,
OIU_COMPR_FL TYPE STRING,
OIU_PYMT_METH_CD TYPE STRING,
OIU_CON_MATNR TYPE STRING,
OIU_CON_MAX_QY TYPE STRING,
OIU_AFFIL_FL TYPE STRING,
OIU_MMS_TYPE_CD TYPE STRING,
OIU_MMS_ETPAY_FL TYPE STRING,
OIUH_CT_NO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_OIU_RV_CLT_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_OIU_RV_CLT_STR-OIU_INTRA_INTER sy-vline 
WA_OIU_RV_CLT_STR-OIU_EXRES_SPLT sy-vline 
WA_OIU_RV_CLT_STR-OIU_EVGN_FL sy-vline 
WA_OIU_RV_CLT_STR-OIU_EVGNPD_BAS sy-vline 
WA_OIU_RV_CLT_STR-OIU_EVGN_PERD_QY sy-vline 
WA_OIU_RV_CLT_STR-OIU_PREIM_TM_CD sy-vline 
WA_OIU_RV_CLT_STR-OIU_PRIM_TM_QY sy-vline 
WA_OIU_RV_CLT_STR-OIU_SEC_TM_CD sy-vline 
WA_OIU_RV_CLT_STR-OIU_SEC_TM_QY sy-vline 
WA_OIU_RV_CLT_STR-OIU_EXP_NOTIF_DT sy-vline 
WA_OIU_RV_CLT_STR-OIU_INTIT_RDT_DT sy-vline 
WA_OIU_RV_CLT_STR-OIU_NEXT_RDT_DT sy-vline 
WA_OIU_RV_CLT_STR-OIU_RTC_DT sy-vline 
WA_OIU_RV_CLT_STR-OIU_RDT_N_PERD sy-vline 
WA_OIU_RV_CLT_STR-OIU_RDT_REFQ_CD sy-vline 
WA_OIU_RV_CLT_STR-OIU_RTF_CD sy-vline 
WA_OIU_RV_CLT_STR-OIU_IMB_PRVSN_FL sy-vline 
WA_OIU_RV_CLT_STR-OIU_FFEE_RMB_FL sy-vline 
WA_OIU_RV_CLT_STR-OIU_FIRM_INTRPT sy-vline 
WA_OIU_RV_CLT_STR-OIU_BAL_BAS_CD sy-vline 
WA_OIU_RV_CLT_STR-OIU_PNTY_BAS_CD sy-vline 
WA_OIU_RV_CLT_STR-OIU_TRANSP_BA sy-vline 
WA_OIU_RV_CLT_STR-OIU_DLY_MAX_T_QY sy-vline 
WA_OIU_RV_CLT_STR-OIU_PRCS_FL sy-vline 
WA_OIU_RV_CLT_STR-OIU_SPR_FL sy-vline 
WA_OIU_RV_CLT_STR-OIU_DEHYD_FL sy-vline 
WA_OIU_RV_CLT_STR-OIU_COMPR_FL sy-vline 
WA_OIU_RV_CLT_STR-OIU_PYMT_METH_CD sy-vline 
WA_OIU_RV_CLT_STR-OIU_CON_MATNR sy-vline 
WA_OIU_RV_CLT_STR-OIU_CON_MAX_QY sy-vline 
WA_OIU_RV_CLT_STR-OIU_AFFIL_FL sy-vline 
WA_OIU_RV_CLT_STR-OIU_MMS_TYPE_CD sy-vline 
WA_OIU_RV_CLT_STR-OIU_MMS_ETPAY_FL sy-vline 
WA_OIU_RV_CLT_STR-OIUH_CT_NO sy-vline      INTO ld_text SEPARATED BY SPACE.

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