ABAP Select data from SAP table OIK_E1OILS2_MOD into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP OIK_E1OILS2_MOD 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 OIK_E1OILS2_MOD. 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 OIK_E1OILS2_MOD 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_OIK_E1OILS2_MOD TYPE STANDARD TABLE OF OIK_E1OILS2_MOD,
      WA_OIK_E1OILS2_MOD TYPE OIK_E1OILS2_MOD,
      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: <OIK_E1OILS2_MOD> TYPE OIK_E1OILS2_MOD.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_OIK_E1OILS2_MOD.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM OIK_E1OILS2_MOD
  INTO TABLE IT_OIK_E1OILS2_MOD.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM OIK_E1OILS2_MOD
*  INTO TABLE @DATA(IT_OIK_E1OILS2_MOD2).
*--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_OIK_E1OILS2_MOD INDEX 1 INTO DATA(WA_OIK_E1OILS2_MOD2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_OIK_E1OILS2_MOD ASSIGNING <OIK_E1OILS2_MOD>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<OIK_E1OILS2_MOD>-SHITEM = 1.
<OIK_E1OILS2_MOD>-POSNR = 1.
<OIK_E1OILS2_MOD>-TSNUMA = 1.
<OIK_E1OILS2_MOD>-TSNUMZ = 1.
<OIK_E1OILS2_MOD>-MAT_ITM = 1.

ENDLOOP.

LOOP AT IT_OIK_E1OILS2_MOD INTO WA_OIK_E1OILS2_MOD.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_OIK_E1OILS2_MOD-QTY_VOL_P, sy-vline,
  WA_OIK_E1OILS2_MOD-QTY_VLN_P, sy-vline,
  WA_OIK_E1OILS2_MOD-QTY_WGT_P, sy-vline,
  WA_OIK_E1OILS2_MOD-QTY_VOL_A, sy-vline,
  WA_OIK_E1OILS2_MOD-QTY_VLN_A, sy-vline,
  WA_OIK_E1OILS2_MOD-QTY_WGT_A, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_OIK_E1OILS2_MOD 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_OIK_E1OILS2_MOD 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_OIK_E1OILS2_MOD INTO WA_OIK_E1OILS2_MOD.


*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 DOC_NUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_OIK_E1OILS2_MOD-DOC_NUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OIK_E1OILS2_MOD-DOC_NUMBER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN5, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN5_OUTPUT'
  EXPORTING
    input =                      WA_OIK_E1OILS2_MOD-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OIK_E1OILS2_MOD-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR_LONG
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_OIK_E1OILS2_MOD-MATNR_LONG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OIK_E1OILS2_MOD-MATNR_LONG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VEHICLE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_OIK_E1OILS2_MOD-VEHICLE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OIK_E1OILS2_MOD-VEHICLE.
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_OIK_E1OILS2_MOD_STR, 
SHITEM TYPE STRING,
POSNR TYPE STRING,
TSNUMA TYPE STRING,
TSNUMZ TYPE STRING,
MAT_ITM TYPE STRING,
QTY_VOL_P TYPE STRING,
QTY_VLN_P TYPE STRING,
QTY_WGT_P TYPE STRING,
QTY_VOL_A TYPE STRING,
QTY_VLN_A TYPE STRING,
QTY_WGT_A TYPE STRING,
QTY_VOL_Z TYPE STRING,
QTY_VLN_Z TYPE STRING,
QTY_WGT_Z TYPE STRING,
LOAD_INDI TYPE STRING,
DISCH_INDI TYPE STRING,
LDDAT TYPE STRING,
LDTIME TYPE STRING,
DSDAT TYPE STRING,
DSTIME TYPE STRING,
ASSGN_IND TYPE STRING,
AUTOTSNUMA TYPE STRING,
AUTOTSNUMZ TYPE STRING,
DOC_NUMBER TYPE STRING,
DOC_TYP TYPE STRING,
MATNR TYPE STRING,
NAME1 TYPE STRING,
KNOTA TYPE STRING,
TSRFOA TYPE STRING,
F4A TYPE STRING,
TSTYPA TYPE STRING,
KNOTZ TYPE STRING,
TSRFOZ TYPE STRING,
F4Z TYPE STRING,
TSTYPZ TYPE STRING,
QTY_VOL_AN TYPE STRING,
QTY_VLN_AN TYPE STRING,
QTY_WGT_AN TYPE STRING,
QTY_VOL_ZN TYPE STRING,
QTY_VLN_ZN TYPE STRING,
QTY_WGT_ZN TYPE STRING,
AUTOSTGSMP TYPE STRING,
UPDATEFLAG TYPE STRING,
MATNR_LONG TYPE STRING,
DOC_TYP_LONG TYPE STRING,
VEHICLE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_OIK_E1OILS2_MOD_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_OIK_E1OILS2_MOD_STR-SHITEM sy-vline 
WA_OIK_E1OILS2_MOD_STR-POSNR sy-vline 
WA_OIK_E1OILS2_MOD_STR-TSNUMA sy-vline 
WA_OIK_E1OILS2_MOD_STR-TSNUMZ sy-vline 
WA_OIK_E1OILS2_MOD_STR-MAT_ITM sy-vline 
WA_OIK_E1OILS2_MOD_STR-QTY_VOL_P sy-vline 
WA_OIK_E1OILS2_MOD_STR-QTY_VLN_P sy-vline 
WA_OIK_E1OILS2_MOD_STR-QTY_WGT_P sy-vline 
WA_OIK_E1OILS2_MOD_STR-QTY_VOL_A sy-vline 
WA_OIK_E1OILS2_MOD_STR-QTY_VLN_A sy-vline 
WA_OIK_E1OILS2_MOD_STR-QTY_WGT_A sy-vline 
WA_OIK_E1OILS2_MOD_STR-QTY_VOL_Z sy-vline 
WA_OIK_E1OILS2_MOD_STR-QTY_VLN_Z sy-vline 
WA_OIK_E1OILS2_MOD_STR-QTY_WGT_Z sy-vline 
WA_OIK_E1OILS2_MOD_STR-LOAD_INDI sy-vline 
WA_OIK_E1OILS2_MOD_STR-DISCH_INDI sy-vline 
WA_OIK_E1OILS2_MOD_STR-LDDAT sy-vline 
WA_OIK_E1OILS2_MOD_STR-LDTIME sy-vline 
WA_OIK_E1OILS2_MOD_STR-DSDAT sy-vline 
WA_OIK_E1OILS2_MOD_STR-DSTIME sy-vline 
WA_OIK_E1OILS2_MOD_STR-ASSGN_IND sy-vline 
WA_OIK_E1OILS2_MOD_STR-AUTOTSNUMA sy-vline 
WA_OIK_E1OILS2_MOD_STR-AUTOTSNUMZ sy-vline 
WA_OIK_E1OILS2_MOD_STR-DOC_NUMBER sy-vline 
WA_OIK_E1OILS2_MOD_STR-DOC_TYP sy-vline 
WA_OIK_E1OILS2_MOD_STR-MATNR sy-vline 
WA_OIK_E1OILS2_MOD_STR-NAME1 sy-vline 
WA_OIK_E1OILS2_MOD_STR-KNOTA sy-vline 
WA_OIK_E1OILS2_MOD_STR-TSRFOA sy-vline 
WA_OIK_E1OILS2_MOD_STR-F4A sy-vline 
WA_OIK_E1OILS2_MOD_STR-TSTYPA sy-vline 
WA_OIK_E1OILS2_MOD_STR-KNOTZ sy-vline 
WA_OIK_E1OILS2_MOD_STR-TSRFOZ sy-vline 
WA_OIK_E1OILS2_MOD_STR-F4Z sy-vline 
WA_OIK_E1OILS2_MOD_STR-TSTYPZ sy-vline 
WA_OIK_E1OILS2_MOD_STR-QTY_VOL_AN sy-vline 
WA_OIK_E1OILS2_MOD_STR-QTY_VLN_AN sy-vline 
WA_OIK_E1OILS2_MOD_STR-QTY_WGT_AN sy-vline 
WA_OIK_E1OILS2_MOD_STR-QTY_VOL_ZN sy-vline 
WA_OIK_E1OILS2_MOD_STR-QTY_VLN_ZN sy-vline 
WA_OIK_E1OILS2_MOD_STR-QTY_WGT_ZN sy-vline 
WA_OIK_E1OILS2_MOD_STR-AUTOSTGSMP sy-vline 
WA_OIK_E1OILS2_MOD_STR-UPDATEFLAG sy-vline 
WA_OIK_E1OILS2_MOD_STR-MATNR_LONG sy-vline 
WA_OIK_E1OILS2_MOD_STR-DOC_TYP_LONG sy-vline 
WA_OIK_E1OILS2_MOD_STR-VEHICLE sy-vline      INTO ld_text SEPARATED BY SPACE.

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