ABAP Select data from SAP table RECP_OI_DOC_CA_COMPCODE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RECP_OI_DOC_CA_COMPCODE
*  INTO TABLE @DATA(IT_RECP_OI_DOC_CA_COMPCODE2).
*--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_RECP_OI_DOC_CA_COMPCODE INDEX 1 INTO DATA(WA_RECP_OI_DOC_CA_COMPCODE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RECP_OI_DOC_CA_COMPCODE>-BUKRS = 1.
<RECP_OI_DOC_CA_COMPCODE>-BUTXT = 1.
<RECP_OI_DOC_CA_COMPCODE>-ORT01 = 1.
<RECP_OI_DOC_CA_COMPCODE>-LAND1 = 1.
<RECP_OI_DOC_CA_COMPCODE>-WAERS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RECP_OI_DOC_CA_COMPCODE-SPRAS, sy-vline,
  WA_RECP_OI_DOC_CA_COMPCODE-KTOPL, sy-vline,
  WA_RECP_OI_DOC_CA_COMPCODE-WAABW, sy-vline,
  WA_RECP_OI_DOC_CA_COMPCODE-PERIV, sy-vline,
  WA_RECP_OI_DOC_CA_COMPCODE-KOKFI, sy-vline,
  WA_RECP_OI_DOC_CA_COMPCODE-RCOMP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RECP_OI_DOC_CA_COMPCODE 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_RECP_OI_DOC_CA_COMPCODE 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_RECP_OI_DOC_CA_COMPCODE INTO WA_RECP_OI_DOC_CA_COMPCODE.


*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 ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_RECP_OI_DOC_CA_COMPCODE-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RECP_OI_DOC_CA_COMPCODE-SPRAS.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field ADRNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RECP_OI_DOC_CA_COMPCODE-ADRNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RECP_OI_DOC_CA_COMPCODE-ADRNR.
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_RECP_OI_DOC_CA_COMPCODE_STR, 
BUKRS TYPE STRING,
BUTXT TYPE STRING,
ORT01 TYPE STRING,
LAND1 TYPE STRING,
WAERS TYPE STRING,
SPRAS TYPE STRING,
KTOPL TYPE STRING,
WAABW TYPE STRING,
PERIV TYPE STRING,
KOKFI TYPE STRING,
RCOMP TYPE STRING,
ADRNR TYPE STRING,
STCEG TYPE STRING,
FIKRS TYPE STRING,
TXJCD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RECP_OI_DOC_CA_COMPCODE_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_RECP_OI_DOC_CA_COMPCODE_STR-BUKRS sy-vline 
WA_RECP_OI_DOC_CA_COMPCODE_STR-BUTXT sy-vline 
WA_RECP_OI_DOC_CA_COMPCODE_STR-ORT01 sy-vline 
WA_RECP_OI_DOC_CA_COMPCODE_STR-LAND1 sy-vline 
WA_RECP_OI_DOC_CA_COMPCODE_STR-WAERS sy-vline 
WA_RECP_OI_DOC_CA_COMPCODE_STR-SPRAS sy-vline 
WA_RECP_OI_DOC_CA_COMPCODE_STR-KTOPL sy-vline 
WA_RECP_OI_DOC_CA_COMPCODE_STR-WAABW sy-vline 
WA_RECP_OI_DOC_CA_COMPCODE_STR-PERIV sy-vline 
WA_RECP_OI_DOC_CA_COMPCODE_STR-KOKFI sy-vline 
WA_RECP_OI_DOC_CA_COMPCODE_STR-RCOMP sy-vline 
WA_RECP_OI_DOC_CA_COMPCODE_STR-ADRNR sy-vline 
WA_RECP_OI_DOC_CA_COMPCODE_STR-STCEG sy-vline 
WA_RECP_OI_DOC_CA_COMPCODE_STR-FIKRS sy-vline 
WA_RECP_OI_DOC_CA_COMPCODE_STR-TXJCD sy-vline      INTO ld_text SEPARATED BY SPACE.

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