ABAP Select data from SAP table OIUH_DSRVTGCTABYORLVL1NOXX into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP OIUH_DSRVTGCTABYORLVL1NOXX 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 OIUH_DSRVTGCTABYORLVL1NOXX. 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 OIUH_DSRVTGCTABYORLVL1NOXX 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_OIUH_DSRVTGCTABYORLVL1NOXX TYPE STANDARD TABLE OF OIUH_DSRVTGCTABYORLVL1NOXX,
      WA_OIUH_DSRVTGCTABYORLVL1NOXX TYPE OIUH_DSRVTGCTABYORLVL1NOXX,
      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: <OIUH_DSRVTGCTABYORLVL1NOXX> TYPE OIUH_DSRVTGCTABYORLVL1NOXX.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_OIUH_DSRVTGCTABYORLVL1NOXX.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM OIUH_DSRVTGCTABYORLVL1NOXX
  INTO TABLE IT_OIUH_DSRVTGCTABYORLVL1NOXX.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM OIUH_DSRVTGCTABYORLVL1NOXX
*  INTO TABLE @DATA(IT_OIUH_DSRVTGCTABYORLVL1NOXX2).
*--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_OIUH_DSRVTGCTABYORLVL1NOXX INDEX 1 INTO DATA(WA_OIUH_DSRVTGCTABYORLVL1NOXX2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_OIUH_DSRVTGCTABYORLVL1NOXX ASSIGNING <OIUH_DSRVTGCTABYORLVL1NOXX>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<OIUH_DSRVTGCTABYORLVL1NOXX>-FIELD_TN = 1.
<OIUH_DSRVTGCTABYORLVL1NOXX>-W_GCTA_OR_LVL_1_NO_T = 1.
<OIUH_DSRVTGCTABYORLVL1NOXX>-W_GCTA_OR_LVL_1_NO_N = 1.
<OIUH_DSRVTGCTABYORLVL1NOXX>-W_GCTA_OR_LVL_1_NO_L = 1.
<OIUH_DSRVTGCTABYORLVL1NOXX>-W_GCTA_OR_LVL_1_NO_S = 1.

ENDLOOP.

LOOP AT IT_OIUH_DSRVTGCTABYORLVL1NOXX INTO WA_OIUH_DSRVTGCTABYORLVL1NOXX.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_OIUH_DSRVTGCTABYORLVL1NOXX-FILLER_1, sy-vline,
  WA_OIUH_DSRVTGCTABYORLVL1NOXX-W_GCTA_ACCT_PERD_DT_T, sy-vline,
  WA_OIUH_DSRVTGCTABYORLVL1NOXX-W_GCTA_ACCT_PERD_DT_N, sy-vline,
  WA_OIUH_DSRVTGCTABYORLVL1NOXX-W_GCTA_ACCT_PERD_DT_L, sy-vline,
  WA_OIUH_DSRVTGCTABYORLVL1NOXX-W_GCTA_ACCT_PERD_DT_S, sy-vline,
  WA_OIUH_DSRVTGCTABYORLVL1NOXX-FILLER_2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_OIUH_DSRVTGCTABYORLVL1NOXX 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_OIUH_DSRVTGCTABYORLVL1NOXX 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_OIUH_DSRVTGCTABYORLVL1NOXX INTO WA_OIUH_DSRVTGCTABYORLVL1NOXX.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_OIUH_DSRVTGCTABYORLVL1NOXX_STR, 
FIELD_TN TYPE STRING,
W_GCTA_OR_LVL_1_NO_T TYPE STRING,
W_GCTA_OR_LVL_1_NO_N TYPE STRING,
W_GCTA_OR_LVL_1_NO_L TYPE STRING,
W_GCTA_OR_LVL_1_NO_S TYPE STRING,
FILLER_1 TYPE STRING,
W_GCTA_ACCT_PERD_DT_T TYPE STRING,
W_GCTA_ACCT_PERD_DT_N TYPE STRING,
W_GCTA_ACCT_PERD_DT_L TYPE STRING,
W_GCTA_ACCT_PERD_DT_S TYPE STRING,
FILLER_2 TYPE STRING,
W_GCTA_BTCH_NO_T TYPE STRING,
W_GCTA_BTCH_NO_N TYPE STRING,
W_GCTA_BTCH_NO_L TYPE STRING,
W_GCTA_BTCH_NO_S TYPE STRING,
FILLER_3 TYPE STRING,
W_GCTA_VOU_NO_T TYPE STRING,
W_GCTA_VOU_NO_N TYPE STRING,
W_GCTA_VOU_NO_L TYPE STRING,
W_GCTA_VOU_NO_S TYPE STRING,
FILLER_4 TYPE STRING,
W_GCTA_LE_NO_T TYPE STRING,
W_GCTA_LE_NO_N TYPE STRING,
W_GCTA_LE_NO_L TYPE STRING,
W_GCTA_LE_NO_S TYPE STRING,
FILLER_5 TYPE STRING,
C_GCTA_OR_LVL_1_NO_T TYPE STRING,
C_GCTA_OR_LVL_1_NO_N TYPE STRING,
C_GCTA_OR_LVL_1_NO_L TYPE STRING,
C_GCTA_OR_LVL_1_NO_S TYPE STRING,
FILLER_6 TYPE STRING,
C_GCTA_ACCT_PERD_DT_T TYPE STRING,
C_GCTA_ACCT_PERD_DT_N TYPE STRING,
C_GCTA_ACCT_PERD_DT_L TYPE STRING,
C_GCTA_ACCT_PERD_DT_S TYPE STRING,
FILLER_7 TYPE STRING,
C_GCTA_BTCH_NO_T TYPE STRING,
C_GCTA_BTCH_NO_N TYPE STRING,
C_GCTA_BTCH_NO_L TYPE STRING,
C_GCTA_BTCH_NO_S TYPE STRING,
FILLER_8 TYPE STRING,
C_GCTA_VOU_NO_T TYPE STRING,
C_GCTA_VOU_NO_N TYPE STRING,
C_GCTA_VOU_NO_L TYPE STRING,
C_GCTA_VOU_NO_S TYPE STRING,
FILLER_9 TYPE STRING,
C_GCTA_LE_NO_T TYPE STRING,
C_GCTA_LE_NO_N TYPE STRING,
C_GCTA_LE_NO_L TYPE STRING,
C_GCTA_LE_NO_S TYPE STRING,
FILLER_10 TYPE STRING,
C_GCTA_TAX_POS_NO_T TYPE STRING,
C_GCTA_TAX_POS_NO_N TYPE STRING,
C_GCTA_TAX_POS_NO_L TYPE STRING,
C_GCTA_TAX_POS_NO_S TYPE STRING,
FILLER_11 TYPE STRING,
C_GCTA_TAX_AM_T TYPE STRING,
C_GCTA_TAX_AM_N TYPE STRING,
C_GCTA_TAX_AM_L TYPE STRING,
C_GCTA_TAX_AM_S TYPE STRING,
FILLER_12 TYPE STRING,
C_GCTA_VER_NO_T TYPE STRING,
C_GCTA_VER_NO_N TYPE STRING,
C_GCTA_VER_NO_L TYPE STRING,
C_GCTA_VER_NO_S TYPE STRING,
FILLER_13 TYPE STRING,
C_GCTA_USER_ID_T TYPE STRING,
C_GCTA_USER_ID_N TYPE STRING,
C_GCTA_USER_ID_L TYPE STRING,
C_GCTA_USER_ID_S TYPE STRING,
FILLER_14 TYPE STRING,
C_GCTA_TIMESTAMP_T TYPE STRING,
C_GCTA_TIMESTAMP_N TYPE STRING,
C_GCTA_TIMESTAMP_L TYPE STRING,
C_GCTA_TIMESTAMP_S TYPE STRING,
FILLER_15 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_OIUH_DSRVTGCTABYORLVL1NOXX_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_OIUH_DSRVTGCTABYORLVL1NOXX_STR-FIELD_TN sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-W_GCTA_OR_LVL_1_NO_T sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-W_GCTA_OR_LVL_1_NO_N sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-W_GCTA_OR_LVL_1_NO_L sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-W_GCTA_OR_LVL_1_NO_S sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-FILLER_1 sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-W_GCTA_ACCT_PERD_DT_T sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-W_GCTA_ACCT_PERD_DT_N sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-W_GCTA_ACCT_PERD_DT_L sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-W_GCTA_ACCT_PERD_DT_S sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-FILLER_2 sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-W_GCTA_BTCH_NO_T sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-W_GCTA_BTCH_NO_N sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-W_GCTA_BTCH_NO_L sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-W_GCTA_BTCH_NO_S sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-FILLER_3 sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-W_GCTA_VOU_NO_T sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-W_GCTA_VOU_NO_N sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-W_GCTA_VOU_NO_L sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-W_GCTA_VOU_NO_S sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-FILLER_4 sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-W_GCTA_LE_NO_T sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-W_GCTA_LE_NO_N sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-W_GCTA_LE_NO_L sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-W_GCTA_LE_NO_S sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-FILLER_5 sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-C_GCTA_OR_LVL_1_NO_T sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-C_GCTA_OR_LVL_1_NO_N sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-C_GCTA_OR_LVL_1_NO_L sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-C_GCTA_OR_LVL_1_NO_S sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-FILLER_6 sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-C_GCTA_ACCT_PERD_DT_T sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-C_GCTA_ACCT_PERD_DT_N sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-C_GCTA_ACCT_PERD_DT_L sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-C_GCTA_ACCT_PERD_DT_S sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-FILLER_7 sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-C_GCTA_BTCH_NO_T sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-C_GCTA_BTCH_NO_N sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-C_GCTA_BTCH_NO_L sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-C_GCTA_BTCH_NO_S sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-FILLER_8 sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-C_GCTA_VOU_NO_T sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-C_GCTA_VOU_NO_N sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-C_GCTA_VOU_NO_L sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-C_GCTA_VOU_NO_S sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-FILLER_9 sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-C_GCTA_LE_NO_T sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-C_GCTA_LE_NO_N sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-C_GCTA_LE_NO_L sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-C_GCTA_LE_NO_S sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-FILLER_10 sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-C_GCTA_TAX_POS_NO_T sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-C_GCTA_TAX_POS_NO_N sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-C_GCTA_TAX_POS_NO_L sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-C_GCTA_TAX_POS_NO_S sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-FILLER_11 sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-C_GCTA_TAX_AM_T sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-C_GCTA_TAX_AM_N sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-C_GCTA_TAX_AM_L sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-C_GCTA_TAX_AM_S sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-FILLER_12 sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-C_GCTA_VER_NO_T sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-C_GCTA_VER_NO_N sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-C_GCTA_VER_NO_L sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-C_GCTA_VER_NO_S sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-FILLER_13 sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-C_GCTA_USER_ID_T sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-C_GCTA_USER_ID_N sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-C_GCTA_USER_ID_L sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-C_GCTA_USER_ID_S sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-FILLER_14 sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-C_GCTA_TIMESTAMP_T sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-C_GCTA_TIMESTAMP_N sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-C_GCTA_TIMESTAMP_L sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-C_GCTA_TIMESTAMP_S sy-vline 
WA_OIUH_DSRVTGCTABYORLVL1NOXX_STR-FILLER_15 sy-vline      INTO ld_text SEPARATED BY SPACE.

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