ABAP Select data from SAP table RCO53IF into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RCO53IF 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 RCO53IF. 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 RCO53IF 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_RCO53IF TYPE STANDARD TABLE OF RCO53IF,
      WA_RCO53IF TYPE RCO53IF,
      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: <RCO53IF> TYPE RCO53IF.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RCO53IF.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RCO53IF
  INTO TABLE IT_RCO53IF.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RCO53IF
*  INTO TABLE @DATA(IT_RCO53IF2).
*--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_RCO53IF INDEX 1 INTO DATA(WA_RCO53IF2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RCO53IF ASSIGNING <RCO53IF>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RCO53IF>-BID = 1.
<RCO53IF>-WERK = 1.
<RCO53IF>-ADRES = 1.
<RCO53IF>-ABDAT = 1.
<RCO53IF>-BISDAT = 1.

ENDLOOP.

LOOP AT IT_RCO53IF INTO WA_RCO53IF.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RCO53IF-ABTME, sy-vline,
  WA_RCO53IF-STCREA, sy-vline,
  WA_RCO53IF-STDOWN, sy-vline,
  WA_RCO53IF-STABOR, sy-vline,
  WA_RCO53IF-STFINI, sy-vline,
  WA_RCO53IF-STCANC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RCO53IF 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_RCO53IF 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_RCO53IF INTO WA_RCO53IF.


*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 BID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RCO53IF-BID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCO53IF-BID.
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_RCO53IF_STR, 
BID TYPE STRING,
WERK TYPE STRING,
ADRES TYPE STRING,
ABDAT TYPE STRING,
BISDAT TYPE STRING,
ABTME TYPE STRING,
STCREA TYPE STRING,
STDOWN TYPE STRING,
STABOR TYPE STRING,
STFINI TYPE STRING,
STCANC TYPE STRING,
STALL TYPE STRING,
TSTKZ TYPE STRING,
NOTST TYPE STRING,
ALTST TYPE STRING,
BISTME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RCO53IF_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_RCO53IF_STR-BID sy-vline 
WA_RCO53IF_STR-WERK sy-vline 
WA_RCO53IF_STR-ADRES sy-vline 
WA_RCO53IF_STR-ABDAT sy-vline 
WA_RCO53IF_STR-BISDAT sy-vline 
WA_RCO53IF_STR-ABTME sy-vline 
WA_RCO53IF_STR-STCREA sy-vline 
WA_RCO53IF_STR-STDOWN sy-vline 
WA_RCO53IF_STR-STABOR sy-vline 
WA_RCO53IF_STR-STFINI sy-vline 
WA_RCO53IF_STR-STCANC sy-vline 
WA_RCO53IF_STR-STALL sy-vline 
WA_RCO53IF_STR-TSTKZ sy-vline 
WA_RCO53IF_STR-NOTST sy-vline 
WA_RCO53IF_STR-ALTST sy-vline 
WA_RCO53IF_STR-BISTME sy-vline      INTO ld_text SEPARATED BY SPACE.

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