ABAP Select data from SAP table OIUH_AFCMTOR4BYLEVELCACHEXX into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP OIUH_AFCMTOR4BYLEVELCACHEXX 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_AFCMTOR4BYLEVELCACHEXX. 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_AFCMTOR4BYLEVELCACHEXX 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_AFCMTOR4BYLEVELCACHEXX TYPE STANDARD TABLE OF OIUH_AFCMTOR4BYLEVELCACHEXX,
      WA_OIUH_AFCMTOR4BYLEVELCACHEXX TYPE OIUH_AFCMTOR4BYLEVELCACHEXX,
      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_AFCMTOR4BYLEVELCACHEXX> TYPE OIUH_AFCMTOR4BYLEVELCACHEXX.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_OIUH_AFCMTOR4BYLEVELCACHEXX.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM OIUH_AFCMTOR4BYLEVELCACHEXX
  INTO TABLE IT_OIUH_AFCMTOR4BYLEVELCACHEXX.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM OIUH_AFCMTOR4BYLEVELCACHEXX
*  INTO TABLE @DATA(IT_OIUH_AFCMTOR4BYLEVELCACHEXX2).
*--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_AFCMTOR4BYLEVELCACHEXX INDEX 1 INTO DATA(WA_OIUH_AFCMTOR4BYLEVELCACHEXX2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_OIUH_AFCMTOR4BYLEVELCACHEXX ASSIGNING <OIUH_AFCMTOR4BYLEVELCACHEXX>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<OIUH_AFCMTOR4BYLEVELCACHEXX>-FIELD_TN = 1.
<OIUH_AFCMTOR4BYLEVELCACHEXX>-W_OR4_OR_LVL_1_NO_T = 1.
<OIUH_AFCMTOR4BYLEVELCACHEXX>-W_OR4_OR_LVL_1_NO_N = 1.
<OIUH_AFCMTOR4BYLEVELCACHEXX>-W_OR4_OR_LVL_1_NO_L = 1.
<OIUH_AFCMTOR4BYLEVELCACHEXX>-W_OR4_OR_LVL_1_NO_S = 1.

ENDLOOP.

LOOP AT IT_OIUH_AFCMTOR4BYLEVELCACHEXX INTO WA_OIUH_AFCMTOR4BYLEVELCACHEXX.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_OIUH_AFCMTOR4BYLEVELCACHEXX-FILLER_1, sy-vline,
  WA_OIUH_AFCMTOR4BYLEVELCACHEXX-W_OR4_OR_LVL_2_NO_T, sy-vline,
  WA_OIUH_AFCMTOR4BYLEVELCACHEXX-W_OR4_OR_LVL_2_NO_N, sy-vline,
  WA_OIUH_AFCMTOR4BYLEVELCACHEXX-W_OR4_OR_LVL_2_NO_L, sy-vline,
  WA_OIUH_AFCMTOR4BYLEVELCACHEXX-W_OR4_OR_LVL_2_NO_S, sy-vline,
  WA_OIUH_AFCMTOR4BYLEVELCACHEXX-FILLER_2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_OIUH_AFCMTOR4BYLEVELCACHEXX 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_AFCMTOR4BYLEVELCACHEXX 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_AFCMTOR4BYLEVELCACHEXX INTO WA_OIUH_AFCMTOR4BYLEVELCACHEXX.


*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_AFCMTOR4BYLEVELCACHEXX_STR, 
FIELD_TN TYPE STRING,
W_OR4_OR_LVL_1_NO_T TYPE STRING,
W_OR4_OR_LVL_1_NO_N TYPE STRING,
W_OR4_OR_LVL_1_NO_L TYPE STRING,
W_OR4_OR_LVL_1_NO_S TYPE STRING,
FILLER_1 TYPE STRING,
W_OR4_OR_LVL_2_NO_T TYPE STRING,
W_OR4_OR_LVL_2_NO_N TYPE STRING,
W_OR4_OR_LVL_2_NO_L TYPE STRING,
W_OR4_OR_LVL_2_NO_S TYPE STRING,
FILLER_2 TYPE STRING,
W_OR4_OR_LVL_3_NO_T TYPE STRING,
W_OR4_OR_LVL_3_NO_N TYPE STRING,
W_OR4_OR_LVL_3_NO_L TYPE STRING,
W_OR4_OR_LVL_3_NO_S TYPE STRING,
FILLER_3 TYPE STRING,
W_OR4_OR_LVL_4_NO_T TYPE STRING,
W_OR4_OR_LVL_4_NO_N TYPE STRING,
W_OR4_OR_LVL_4_NO_L TYPE STRING,
W_OR4_OR_LVL_4_NO_S TYPE STRING,
FILLER_4 TYPE STRING,
C_OR4_OR_LVL_4_NM_T TYPE STRING,
C_OR4_OR_LVL_4_NM_N TYPE STRING,
C_OR4_OR_LVL_4_NM_L TYPE STRING,
C_OR4_OR_LVL_4_NM_S TYPE STRING,
FILLER_5 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_OIUH_AFCMTOR4BYLEVELCACHEXX_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_AFCMTOR4BYLEVELCACHEXX_STR-FIELD_TN sy-vline 
WA_OIUH_AFCMTOR4BYLEVELCACHEXX_STR-W_OR4_OR_LVL_1_NO_T sy-vline 
WA_OIUH_AFCMTOR4BYLEVELCACHEXX_STR-W_OR4_OR_LVL_1_NO_N sy-vline 
WA_OIUH_AFCMTOR4BYLEVELCACHEXX_STR-W_OR4_OR_LVL_1_NO_L sy-vline 
WA_OIUH_AFCMTOR4BYLEVELCACHEXX_STR-W_OR4_OR_LVL_1_NO_S sy-vline 
WA_OIUH_AFCMTOR4BYLEVELCACHEXX_STR-FILLER_1 sy-vline 
WA_OIUH_AFCMTOR4BYLEVELCACHEXX_STR-W_OR4_OR_LVL_2_NO_T sy-vline 
WA_OIUH_AFCMTOR4BYLEVELCACHEXX_STR-W_OR4_OR_LVL_2_NO_N sy-vline 
WA_OIUH_AFCMTOR4BYLEVELCACHEXX_STR-W_OR4_OR_LVL_2_NO_L sy-vline 
WA_OIUH_AFCMTOR4BYLEVELCACHEXX_STR-W_OR4_OR_LVL_2_NO_S sy-vline 
WA_OIUH_AFCMTOR4BYLEVELCACHEXX_STR-FILLER_2 sy-vline 
WA_OIUH_AFCMTOR4BYLEVELCACHEXX_STR-W_OR4_OR_LVL_3_NO_T sy-vline 
WA_OIUH_AFCMTOR4BYLEVELCACHEXX_STR-W_OR4_OR_LVL_3_NO_N sy-vline 
WA_OIUH_AFCMTOR4BYLEVELCACHEXX_STR-W_OR4_OR_LVL_3_NO_L sy-vline 
WA_OIUH_AFCMTOR4BYLEVELCACHEXX_STR-W_OR4_OR_LVL_3_NO_S sy-vline 
WA_OIUH_AFCMTOR4BYLEVELCACHEXX_STR-FILLER_3 sy-vline 
WA_OIUH_AFCMTOR4BYLEVELCACHEXX_STR-W_OR4_OR_LVL_4_NO_T sy-vline 
WA_OIUH_AFCMTOR4BYLEVELCACHEXX_STR-W_OR4_OR_LVL_4_NO_N sy-vline 
WA_OIUH_AFCMTOR4BYLEVELCACHEXX_STR-W_OR4_OR_LVL_4_NO_L sy-vline 
WA_OIUH_AFCMTOR4BYLEVELCACHEXX_STR-W_OR4_OR_LVL_4_NO_S sy-vline 
WA_OIUH_AFCMTOR4BYLEVELCACHEXX_STR-FILLER_4 sy-vline 
WA_OIUH_AFCMTOR4BYLEVELCACHEXX_STR-C_OR4_OR_LVL_4_NM_T sy-vline 
WA_OIUH_AFCMTOR4BYLEVELCACHEXX_STR-C_OR4_OR_LVL_4_NM_N sy-vline 
WA_OIUH_AFCMTOR4BYLEVELCACHEXX_STR-C_OR4_OR_LVL_4_NM_L sy-vline 
WA_OIUH_AFCMTOR4BYLEVELCACHEXX_STR-C_OR4_OR_LVL_4_NM_S sy-vline 
WA_OIUH_AFCMTOR4BYLEVELCACHEXX_STR-FILLER_5 sy-vline      INTO ld_text SEPARATED BY SPACE.

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