ABAP Select data from SAP table OIJEC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM OIJEC
*  INTO TABLE @DATA(IT_OIJEC2).
*--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_OIJEC INDEX 1 INTO DATA(WA_OIJEC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<OIJEC>-CLIENT = 1.
<OIJEC>-APP_AREA = 1.
<OIJEC>-OBJECT_ID = 1.
<OIJEC>-EVENT_NR = 1.
<OIJEC>-TYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_OIJEC-RPART, sy-vline,
  WA_OIJEC-DOC_TYPE, sy-vline,
  WA_OIJEC-DOC_NUMBER, sy-vline,
  WA_OIJEC-UPDFLAG, sy-vline,
  WA_OIJEC-EV_SEQ, sy-vline,
  WA_OIJEC-STATUS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_OIJEC 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_OIJEC 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_OIJEC INTO WA_OIJEC.


*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_OIJEC-DOC_NUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OIJEC-DOC_NUMBER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EV_SEQ
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_OIJEC-EV_SEQ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OIJEC-EV_SEQ.
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_OIJEC_STR, 
CLIENT TYPE STRING,
APP_AREA TYPE STRING,
OBJECT_ID TYPE STRING,
EVENT_NR TYPE STRING,
TYPE TYPE STRING,
RPART TYPE STRING,
DOC_TYPE TYPE STRING,
DOC_NUMBER TYPE STRING,
UPDFLAG TYPE STRING,
EV_SEQ 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_DATE TYPE STRING,
CRE_TIME TYPE STRING,
CRE_NAME 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,
EDDTF TYPE STRING,
AEDTMF TYPE STRING,
AEDDTT TYPE STRING,
AEDTMT TYPE STRING,
LONGTEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_OIJEC_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_OIJEC_STR-CLIENT sy-vline 
WA_OIJEC_STR-APP_AREA sy-vline 
WA_OIJEC_STR-OBJECT_ID sy-vline 
WA_OIJEC_STR-EVENT_NR sy-vline 
WA_OIJEC_STR-TYPE sy-vline 
WA_OIJEC_STR-RPART sy-vline 
WA_OIJEC_STR-DOC_TYPE sy-vline 
WA_OIJEC_STR-DOC_NUMBER sy-vline 
WA_OIJEC_STR-UPDFLAG sy-vline 
WA_OIJEC_STR-EV_SEQ sy-vline 
WA_OIJEC_STR-STATUS sy-vline 
WA_OIJEC_STR-PSTDTF sy-vline 
WA_OIJEC_STR-PSTTMF sy-vline 
WA_OIJEC_STR-PSTDTT sy-vline 
WA_OIJEC_STR-PSTTMT sy-vline 
WA_OIJEC_STR-PEDDTF sy-vline 
WA_OIJEC_STR-PEDTMF sy-vline 
WA_OIJEC_STR-PEDDTT sy-vline 
WA_OIJEC_STR-PEDTMT sy-vline 
WA_OIJEC_STR-CRE_DATE sy-vline 
WA_OIJEC_STR-CRE_TIME sy-vline 
WA_OIJEC_STR-CRE_NAME sy-vline 
WA_OIJEC_STR-CHA_NAME sy-vline 
WA_OIJEC_STR-CHA_DATE sy-vline 
WA_OIJEC_STR-CHA_TIME sy-vline 
WA_OIJEC_STR-ASTDTF sy-vline 
WA_OIJEC_STR-ASTTMF sy-vline 
WA_OIJEC_STR-ASTDTT sy-vline 
WA_OIJEC_STR-ASTTMT sy-vline 
WA_OIJEC_STR-EDDTF sy-vline 
WA_OIJEC_STR-AEDTMF sy-vline 
WA_OIJEC_STR-AEDDTT sy-vline 
WA_OIJEC_STR-AEDTMT sy-vline 
WA_OIJEC_STR-LONGTEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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