ABAP Select data from SAP table OIJNE_SIM_MK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM OIJNE_SIM_MK
*  INTO TABLE @DATA(IT_OIJNE_SIM_MK2).
*--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_OIJNE_SIM_MK INDEX 1 INTO DATA(WA_OIJNE_SIM_MK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<OIJNE_SIM_MK>-CLIENT = 1.
<OIJNE_SIM_MK>-EVENT_SIM_SCHED_ID = 1.
<OIJNE_SIM_MK>-NOMTK = 1.
<OIJNE_SIM_MK>-NOMIT = 1.
<OIJNE_SIM_MK>-EVENT_NR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_OIJNE_SIM_MK-SCENARIO_ID, sy-vline,
  WA_OIJNE_SIM_MK-SIM_VERSION, sy-vline,
  WA_OIJNE_SIM_MK-NOMNR, sy-vline,
  WA_OIJNE_SIM_MK-TYPE, sy-vline,
  WA_OIJNE_SIM_MK-DOC_TYPE, sy-vline,
  WA_OIJNE_SIM_MK-UPDFLAG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_OIJNE_SIM_MK 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_OIJNE_SIM_MK 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_OIJNE_SIM_MK INTO WA_OIJNE_SIM_MK.


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

*Conversion exit ALPHA, internal->external for field NOMTK
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_OIJNE_SIM_MK-NOMTK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OIJNE_SIM_MK-NOMTK.
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_OIJNE_SIM_MK_STR, 
CLIENT TYPE STRING,
EVENT_SIM_SCHED_ID TYPE STRING,
NOMTK TYPE STRING,
NOMIT TYPE STRING,
EVENT_NR TYPE STRING,
SCENARIO_ID TYPE STRING,
SIM_VERSION TYPE STRING,
NOMNR TYPE STRING,
TYPE TYPE STRING,
DOC_TYPE TYPE STRING,
UPDFLAG TYPE STRING,
EV_SEQ TYPE STRING,
DOC_NUMBER TYPE STRING,
SHITEM TYPE STRING,
STATUS TYPE STRING,
PSTDTF TYPE STRING,
PSTTMF TYPE STRING,
PSTDTT TYPE STRING,
PSTTMT TYPE STRING,
PEDDTF TYPE STRING,
PEDTMF TYPE STRING,
PEDDTT TYPE STRING,
PEDTMT TYPE STRING,
CRE_NAME TYPE STRING,
CRE_DATE TYPE STRING,
CRE_TIME TYPE STRING,
CHA_NAME TYPE STRING,
CHA_DATE TYPE STRING,
CHA_TIME TYPE STRING,
ASTDTF TYPE STRING,
ASTTMF TYPE STRING,
ASTDTT TYPE STRING,
ASTTMT TYPE STRING,
AEDDTF TYPE STRING,
AEDTMF TYPE STRING,
AEDDTT TYPE STRING,
AEDTMT TYPE STRING,
DEFAULTED TYPE STRING,
VEH_NR TYPE STRING,
TSRFO TYPE STRING,
TICKET_KEY TYPE STRING,
TICKET_ITEM TYPE STRING,
TICKET_EV_NR TYPE STRING,
TPNUM TYPE STRING,
DELIND TYPE STRING,
DRIVER TYPE STRING,
CPARID TYPE STRING,
ADD_QTY TYPE STRING,
ADQ_UOM TYPE STRING,
MATNR TYPE STRING,
LT_EVOPPOINT TYPE STRING,
BERNR TYPE STRING,
BERID TYPE STRING,
USER_ID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_OIJNE_SIM_MK_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_OIJNE_SIM_MK_STR-CLIENT sy-vline 
WA_OIJNE_SIM_MK_STR-EVENT_SIM_SCHED_ID sy-vline 
WA_OIJNE_SIM_MK_STR-NOMTK sy-vline 
WA_OIJNE_SIM_MK_STR-NOMIT sy-vline 
WA_OIJNE_SIM_MK_STR-EVENT_NR sy-vline 
WA_OIJNE_SIM_MK_STR-SCENARIO_ID sy-vline 
WA_OIJNE_SIM_MK_STR-SIM_VERSION sy-vline 
WA_OIJNE_SIM_MK_STR-NOMNR sy-vline 
WA_OIJNE_SIM_MK_STR-TYPE sy-vline 
WA_OIJNE_SIM_MK_STR-DOC_TYPE sy-vline 
WA_OIJNE_SIM_MK_STR-UPDFLAG sy-vline 
WA_OIJNE_SIM_MK_STR-EV_SEQ sy-vline 
WA_OIJNE_SIM_MK_STR-DOC_NUMBER sy-vline 
WA_OIJNE_SIM_MK_STR-SHITEM sy-vline 
WA_OIJNE_SIM_MK_STR-STATUS sy-vline 
WA_OIJNE_SIM_MK_STR-PSTDTF sy-vline 
WA_OIJNE_SIM_MK_STR-PSTTMF sy-vline 
WA_OIJNE_SIM_MK_STR-PSTDTT sy-vline 
WA_OIJNE_SIM_MK_STR-PSTTMT sy-vline 
WA_OIJNE_SIM_MK_STR-PEDDTF sy-vline 
WA_OIJNE_SIM_MK_STR-PEDTMF sy-vline 
WA_OIJNE_SIM_MK_STR-PEDDTT sy-vline 
WA_OIJNE_SIM_MK_STR-PEDTMT sy-vline 
WA_OIJNE_SIM_MK_STR-CRE_NAME sy-vline 
WA_OIJNE_SIM_MK_STR-CRE_DATE sy-vline 
WA_OIJNE_SIM_MK_STR-CRE_TIME sy-vline 
WA_OIJNE_SIM_MK_STR-CHA_NAME sy-vline 
WA_OIJNE_SIM_MK_STR-CHA_DATE sy-vline 
WA_OIJNE_SIM_MK_STR-CHA_TIME sy-vline 
WA_OIJNE_SIM_MK_STR-ASTDTF sy-vline 
WA_OIJNE_SIM_MK_STR-ASTTMF sy-vline 
WA_OIJNE_SIM_MK_STR-ASTDTT sy-vline 
WA_OIJNE_SIM_MK_STR-ASTTMT sy-vline 
WA_OIJNE_SIM_MK_STR-AEDDTF sy-vline 
WA_OIJNE_SIM_MK_STR-AEDTMF sy-vline 
WA_OIJNE_SIM_MK_STR-AEDDTT sy-vline 
WA_OIJNE_SIM_MK_STR-AEDTMT sy-vline 
WA_OIJNE_SIM_MK_STR-DEFAULTED sy-vline 
WA_OIJNE_SIM_MK_STR-VEH_NR sy-vline 
WA_OIJNE_SIM_MK_STR-TSRFO sy-vline 
WA_OIJNE_SIM_MK_STR-TICKET_KEY sy-vline 
WA_OIJNE_SIM_MK_STR-TICKET_ITEM sy-vline 
WA_OIJNE_SIM_MK_STR-TICKET_EV_NR sy-vline 
WA_OIJNE_SIM_MK_STR-TPNUM sy-vline 
WA_OIJNE_SIM_MK_STR-DELIND sy-vline 
WA_OIJNE_SIM_MK_STR-DRIVER sy-vline 
WA_OIJNE_SIM_MK_STR-CPARID sy-vline 
WA_OIJNE_SIM_MK_STR-ADD_QTY sy-vline 
WA_OIJNE_SIM_MK_STR-ADQ_UOM sy-vline 
WA_OIJNE_SIM_MK_STR-MATNR sy-vline 
WA_OIJNE_SIM_MK_STR-LT_EVOPPOINT sy-vline 
WA_OIJNE_SIM_MK_STR-BERNR sy-vline 
WA_OIJNE_SIM_MK_STR-BERID sy-vline 
WA_OIJNE_SIM_MK_STR-USER_ID sy-vline      INTO ld_text SEPARATED BY SPACE.

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