ABAP Select data from SAP table OIJLOC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM OIJLOC
*  INTO TABLE @DATA(IT_OIJLOC2).
*--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_OIJLOC INDEX 1 INTO DATA(WA_OIJLOC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<OIJLOC>-MANDT = 1.
<OIJLOC>-LOCID = 1.
<OIJLOC>-LOCTYP = 1.
<OIJLOC>-LOCNAM = 1.
<OIJLOC>-KNOTE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_OIJLOC-PLANLOC, sy-vline,
  WA_OIJLOC-ERDAT, sy-vline,
  WA_OIJLOC-ERZEIT, sy-vline,
  WA_OIJLOC-ERNAM, sy-vline,
  WA_OIJLOC-AEDAT, sy-vline,
  WA_OIJLOC-AEZEIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_OIJLOC 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_OIJLOC 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_OIJLOC INTO WA_OIJLOC.


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

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

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

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

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

*Conversion exit ALPHA, internal->external for field PBLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_OIJLOC-PBLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OIJLOC-PBLNR.
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_OIJLOC_STR, 
MANDT TYPE STRING,
LOCID TYPE STRING,
LOCTYP TYPE STRING,
LOCNAM TYPE STRING,
KNOTE TYPE STRING,
PLANLOC TYPE STRING,
ERDAT TYPE STRING,
ERZEIT TYPE STRING,
ERNAM TYPE STRING,
AEDAT TYPE STRING,
AEZEIT TYPE STRING,
AENAM TYPE STRING,
BLOIND TYPE STRING,
DELIND TYPE STRING,
TKTSELECT TYPE STRING,
RDACT TYPE STRING,
MAXRATE TYPE STRING,
MINRATE TYPE STRING,
OPERATE TYPE STRING,
RATEUOM TYPE STRING,
RATEPERD TYPE STRING,
MAXUSAGE TYPE STRING,
MINUSAGE TYPE STRING,
OPEUSAGE TYPE STRING,
USAGEUOM TYPE STRING,
USAGEPERD TYPE STRING,
SS_RT TYPE STRING,
BSCHFLAG TYPE STRING,
BSCHPERD TYPE STRING,
BSCHPUOM TYPE STRING,
TANKAGG TYPE STRING,
PBLNR TYPE STRING,
SCHEMA_BUSCONF TYPE STRING,
SCHEMA_TECHSCH TYPE STRING,
SCHEMA_ALLOC TYPE STRING,
EXTERNAL_IND TYPE STRING,END OF T_EKKO_STR.
DATA: WA_OIJLOC_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_OIJLOC_STR-MANDT sy-vline 
WA_OIJLOC_STR-LOCID sy-vline 
WA_OIJLOC_STR-LOCTYP sy-vline 
WA_OIJLOC_STR-LOCNAM sy-vline 
WA_OIJLOC_STR-KNOTE sy-vline 
WA_OIJLOC_STR-PLANLOC sy-vline 
WA_OIJLOC_STR-ERDAT sy-vline 
WA_OIJLOC_STR-ERZEIT sy-vline 
WA_OIJLOC_STR-ERNAM sy-vline 
WA_OIJLOC_STR-AEDAT sy-vline 
WA_OIJLOC_STR-AEZEIT sy-vline 
WA_OIJLOC_STR-AENAM sy-vline 
WA_OIJLOC_STR-BLOIND sy-vline 
WA_OIJLOC_STR-DELIND sy-vline 
WA_OIJLOC_STR-TKTSELECT sy-vline 
WA_OIJLOC_STR-RDACT sy-vline 
WA_OIJLOC_STR-MAXRATE sy-vline 
WA_OIJLOC_STR-MINRATE sy-vline 
WA_OIJLOC_STR-OPERATE sy-vline 
WA_OIJLOC_STR-RATEUOM sy-vline 
WA_OIJLOC_STR-RATEPERD sy-vline 
WA_OIJLOC_STR-MAXUSAGE sy-vline 
WA_OIJLOC_STR-MINUSAGE sy-vline 
WA_OIJLOC_STR-OPEUSAGE sy-vline 
WA_OIJLOC_STR-USAGEUOM sy-vline 
WA_OIJLOC_STR-USAGEPERD sy-vline 
WA_OIJLOC_STR-SS_RT sy-vline 
WA_OIJLOC_STR-BSCHFLAG sy-vline 
WA_OIJLOC_STR-BSCHPERD sy-vline 
WA_OIJLOC_STR-BSCHPUOM sy-vline 
WA_OIJLOC_STR-TANKAGG sy-vline 
WA_OIJLOC_STR-PBLNR sy-vline 
WA_OIJLOC_STR-SCHEMA_BUSCONF sy-vline 
WA_OIJLOC_STR-SCHEMA_TECHSCH sy-vline 
WA_OIJLOC_STR-SCHEMA_ALLOC sy-vline 
WA_OIJLOC_STR-EXTERNAL_IND sy-vline      INTO ld_text SEPARATED BY SPACE.

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