ABAP Select data from SAP table OIRECH_APPL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM OIRECH_APPL
*  INTO TABLE @DATA(IT_OIRECH_APPL2).
*--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_OIRECH_APPL INDEX 1 INTO DATA(WA_OIRECH_APPL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<OIRECH_APPL>-MANDT = 1.
<OIRECH_APPL>-CHOBJ = 1.
<OIRECH_APPL>-KUNNR = 1.
<OIRECH_APPL>-VKORG = 1.
<OIRECH_APPL>-VTWEG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_OIRECH_APPL-SPART, sy-vline,
  WA_OIRECH_APPL-KOKRS, sy-vline,
  WA_OIRECH_APPL-KOSTL, sy-vline,
  WA_OIRECH_APPL-ERDAT, sy-vline,
  WA_OIRECH_APPL-ERTIM, sy-vline,
  WA_OIRECH_APPL-ERNAM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_OIRECH_APPL 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_OIRECH_APPL 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_OIRECH_APPL INTO WA_OIRECH_APPL.


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

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

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

*Conversion exit MATN1, internal->external for field DISCMATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_OIRECH_APPL-DISCMATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OIRECH_APPL-DISCMATNR.
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_OIRECH_APPL_STR, 
MANDT TYPE STRING,
CHOBJ TYPE STRING,
KUNNR TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
KOKRS TYPE STRING,
KOSTL TYPE STRING,
ERDAT TYPE STRING,
ERTIM TYPE STRING,
ERNAM TYPE STRING,
AEDAT TYPE STRING,
AETIM TYPE STRING,
AENAM TYPE STRING,
FEEMATNR TYPE STRING,
DISCMATNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_OIRECH_APPL_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_OIRECH_APPL_STR-MANDT sy-vline 
WA_OIRECH_APPL_STR-CHOBJ sy-vline 
WA_OIRECH_APPL_STR-KUNNR sy-vline 
WA_OIRECH_APPL_STR-VKORG sy-vline 
WA_OIRECH_APPL_STR-VTWEG sy-vline 
WA_OIRECH_APPL_STR-SPART sy-vline 
WA_OIRECH_APPL_STR-KOKRS sy-vline 
WA_OIRECH_APPL_STR-KOSTL sy-vline 
WA_OIRECH_APPL_STR-ERDAT sy-vline 
WA_OIRECH_APPL_STR-ERTIM sy-vline 
WA_OIRECH_APPL_STR-ERNAM sy-vline 
WA_OIRECH_APPL_STR-AEDAT sy-vline 
WA_OIRECH_APPL_STR-AETIM sy-vline 
WA_OIRECH_APPL_STR-AENAM sy-vline 
WA_OIRECH_APPL_STR-FEEMATNR sy-vline 
WA_OIRECH_APPL_STR-DISCMATNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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