ABAP Select data from SAP table M_OIJCC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM M_OIJCC
*  INTO TABLE @DATA(IT_M_OIJCC2).
*--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_M_OIJCC INDEX 1 INTO DATA(WA_M_OIJCC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<M_OIJCC>-MANDT = 1.
<M_OIJCC>-NOMTK = 1.
<M_OIJCC>-NOMNR = 1.
<M_OIJCC>-TICKETNR = 1.
<M_OIJCC>-LOCID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_M_OIJCC-TKT_YEAR, sy-vline,
  WA_M_OIJCC-TKT_MONTH, sy-vline,
  WA_M_OIJCC-STATUS, sy-vline,
  WA_M_OIJCC-SUBSTATUS, sy-vline,
  WA_M_OIJCC-TKTSUBRC, sy-vline,
  WA_M_OIJCC-NOMIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_M_OIJCC 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_M_OIJCC 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_M_OIJCC INTO WA_M_OIJCC.


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

*Conversion exit ALPHA, internal->external for field TICKETNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_M_OIJCC-TICKETNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_M_OIJCC-TICKETNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field TKT_YEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_M_OIJCC-TKT_YEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_M_OIJCC-TKT_YEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CARRIER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_M_OIJCC-CARRIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_M_OIJCC-CARRIER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SHIPPER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_M_OIJCC-SHIPPER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_M_OIJCC-SHIPPER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_M_OIJCC-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_M_OIJCC-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_M_OIJCC-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_M_OIJCC-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_M_OIJCC_STR, 
MANDT TYPE STRING,
NOMTK TYPE STRING,
NOMNR TYPE STRING,
TICKETNR TYPE STRING,
LOCID TYPE STRING,
TKT_YEAR TYPE STRING,
TKT_MONTH TYPE STRING,
STATUS TYPE STRING,
SUBSTATUS TYPE STRING,
TKTSUBRC TYPE STRING,
NOMIT TYPE STRING,
SITYP TYPE STRING,
MVSCENARIO TYPE STRING,
CARRIER TYPE STRING,
SHIPPER TYPE STRING,
SHTYPE TYPE STRING,
TPLST TYPE STRING,
TSYST TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
MATNR TYPE STRING,
WERKS_O TYPE STRING,
LGORT_O TYPE STRING,
WERKS_D TYPE STRING,
LGORT_D TYPE STRING,
END_DATE TYPE STRING,
ERDAT TYPE STRING,
ERNAM TYPE STRING,
AEDAT TYPE STRING,
AENAM TYPE STRING,
BLOIND TYPE STRING,
DELIND TYPE STRING,
NMSELECT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_M_OIJCC_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_M_OIJCC_STR-MANDT sy-vline 
WA_M_OIJCC_STR-NOMTK sy-vline 
WA_M_OIJCC_STR-NOMNR sy-vline 
WA_M_OIJCC_STR-TICKETNR sy-vline 
WA_M_OIJCC_STR-LOCID sy-vline 
WA_M_OIJCC_STR-TKT_YEAR sy-vline 
WA_M_OIJCC_STR-TKT_MONTH sy-vline 
WA_M_OIJCC_STR-STATUS sy-vline 
WA_M_OIJCC_STR-SUBSTATUS sy-vline 
WA_M_OIJCC_STR-TKTSUBRC sy-vline 
WA_M_OIJCC_STR-NOMIT sy-vline 
WA_M_OIJCC_STR-SITYP sy-vline 
WA_M_OIJCC_STR-MVSCENARIO sy-vline 
WA_M_OIJCC_STR-CARRIER sy-vline 
WA_M_OIJCC_STR-SHIPPER sy-vline 
WA_M_OIJCC_STR-SHTYPE sy-vline 
WA_M_OIJCC_STR-TPLST sy-vline 
WA_M_OIJCC_STR-TSYST sy-vline 
WA_M_OIJCC_STR-MENGE sy-vline 
WA_M_OIJCC_STR-MEINS sy-vline 
WA_M_OIJCC_STR-MATNR sy-vline 
WA_M_OIJCC_STR-WERKS_O sy-vline 
WA_M_OIJCC_STR-LGORT_O sy-vline 
WA_M_OIJCC_STR-WERKS_D sy-vline 
WA_M_OIJCC_STR-LGORT_D sy-vline 
WA_M_OIJCC_STR-END_DATE sy-vline 
WA_M_OIJCC_STR-ERDAT sy-vline 
WA_M_OIJCC_STR-ERNAM sy-vline 
WA_M_OIJCC_STR-AEDAT sy-vline 
WA_M_OIJCC_STR-AENAM sy-vline 
WA_M_OIJCC_STR-BLOIND sy-vline 
WA_M_OIJCC_STR-DELIND sy-vline 
WA_M_OIJCC_STR-NMSELECT sy-vline      INTO ld_text SEPARATED BY SPACE.

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