ABAP Select data from SAP table RJPC1_CONTROL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RJPC1_CONTROL 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 RJPC1_CONTROL. 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 RJPC1_CONTROL 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_RJPC1_CONTROL TYPE STANDARD TABLE OF RJPC1_CONTROL,
      WA_RJPC1_CONTROL TYPE RJPC1_CONTROL,
      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: <RJPC1_CONTROL> TYPE RJPC1_CONTROL.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RJPC1_CONTROL.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RJPC1_CONTROL
  INTO TABLE IT_RJPC1_CONTROL.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RJPC1_CONTROL
*  INTO TABLE @DATA(IT_RJPC1_CONTROL2).
*--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_RJPC1_CONTROL INDEX 1 INTO DATA(WA_RJPC1_CONTROL2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RJPC1_CONTROL ASSIGNING <RJPC1_CONTROL>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RJPC1_CONTROL>-XCOPYMARC = 1.
<RJPC1_CONTROL>-XCOPYMARD = 1.
<RJPC1_CONTROL>-XCOPYMVKE = 1.
<RJPC1_CONTROL>-XCOPYMLGN = 1.
<RJPC1_CONTROL>-XCOPYMLGT = 1.

ENDLOOP.

LOOP AT IT_RJPC1_CONTROL INTO WA_RJPC1_CONTROL.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RJPC1_CONTROL-XCOPYMARM, sy-vline,
  WA_RJPC1_CONTROL-XCOPYMBEW, sy-vline,
  WA_RJPC1_CONTROL-XCOPYMFHM, sy-vline,
  WA_RJPC1_CONTROL-XCOPYMPGD, sy-vline,
  WA_RJPC1_CONTROL-XCOPYSTEU, sy-vline,
  WA_RJPC1_CONTROL-XCOPYSTMM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RJPC1_CONTROL 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_RJPC1_CONTROL 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_RJPC1_CONTROL INTO WA_RJPC1_CONTROL.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_RJPC1_CONTROL_STR, 
XCOPYMARC TYPE STRING,
XCOPYMARD TYPE STRING,
XCOPYMVKE TYPE STRING,
XCOPYMLGN TYPE STRING,
XCOPYMLGT TYPE STRING,
XCOPYMARM TYPE STRING,
XCOPYMBEW TYPE STRING,
XCOPYMFHM TYPE STRING,
XCOPYMPGD TYPE STRING,
XCOPYSTEU TYPE STRING,
XCOPYSTMM TYPE STRING,
XCOPYLTXTGRUN TYPE STRING,
XCOPYLTXTBEST TYPE STRING,
XCOPYLTXTIVER TYPE STRING,
XCOPYLTXTPRUE TYPE STRING,
XCOPYLTXTMVKE TYPE STRING,
XCOPYLTXTMDTXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RJPC1_CONTROL_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_RJPC1_CONTROL_STR-XCOPYMARC sy-vline 
WA_RJPC1_CONTROL_STR-XCOPYMARD sy-vline 
WA_RJPC1_CONTROL_STR-XCOPYMVKE sy-vline 
WA_RJPC1_CONTROL_STR-XCOPYMLGN sy-vline 
WA_RJPC1_CONTROL_STR-XCOPYMLGT sy-vline 
WA_RJPC1_CONTROL_STR-XCOPYMARM sy-vline 
WA_RJPC1_CONTROL_STR-XCOPYMBEW sy-vline 
WA_RJPC1_CONTROL_STR-XCOPYMFHM sy-vline 
WA_RJPC1_CONTROL_STR-XCOPYMPGD sy-vline 
WA_RJPC1_CONTROL_STR-XCOPYSTEU sy-vline 
WA_RJPC1_CONTROL_STR-XCOPYSTMM sy-vline 
WA_RJPC1_CONTROL_STR-XCOPYLTXTGRUN sy-vline 
WA_RJPC1_CONTROL_STR-XCOPYLTXTBEST sy-vline 
WA_RJPC1_CONTROL_STR-XCOPYLTXTIVER sy-vline 
WA_RJPC1_CONTROL_STR-XCOPYLTXTPRUE sy-vline 
WA_RJPC1_CONTROL_STR-XCOPYLTXTMVKE sy-vline 
WA_RJPC1_CONTROL_STR-XCOPYLTXTMDTXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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