ABAP Select data from SAP table RKCT704 into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP RKCT704 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 RKCT704. 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 RKCT704 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_RKCT704 TYPE STANDARD TABLE OF RKCT704,
      WA_RKCT704 TYPE RKCT704,
      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: <RKCT704> TYPE RKCT704.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RKCT704.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RKCT704
  INTO TABLE IT_RKCT704.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RKCT704
*  INTO TABLE @DATA(IT_RKCT7042).
*--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_RKCT704 INDEX 1 INTO DATA(WA_RKCT7042).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RKCT704 ASSIGNING <RKCT704>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RKCT704>-VERSIO = 1.
<RKCT704>-PLACTI = 1.
<RKCT704>-YEARB = 1.
<RKCT704>-PERDE = 1.
<RKCT704>-VERSO = 1.

ENDLOOP.

LOOP AT IT_RKCT704 INTO WA_RKCT704.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RKCT704-ESPART, sy-vline,
  WA_RKCT704-EVKORG, sy-vline,
  WA_RKCT704-EVTWEG, sy-vline,
  WA_RKCT704-MATNR, sy-vline,
  WA_RKCT704-KUNNR, sy-vline,
  WA_RKCT704-VALTY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RKCT704 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_RKCT704 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_RKCT704 INTO WA_RKCT704.


*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 VERSIO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RKCT704-VERSIO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RKCT704-VERSIO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field YEARB
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_RKCT704-YEARB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RKCT704-YEARB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_RKCT704-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RKCT704-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RKCT704-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RKCT704-KUNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field AEMENG_UNI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RKCT704-AEMENG_UNI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RKCT704-AEMENG_UNI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field OAUMEN_UNI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RKCT704-OAUMEN_UNI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RKCT704-OAUMEN_UNI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UMMENG_UNI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RKCT704-UMMENG_UNI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RKCT704-UMMENG_UNI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field GUMENG_UNI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RKCT704-GUMENG_UNI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RKCT704-GUMENG_UNI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field REMENG_UNI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RKCT704-REMENG_UNI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RKCT704-REMENG_UNI.
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_RKCT704_STR, 
VERSIO TYPE STRING,
PLACTI TYPE STRING,
YEARB TYPE STRING,
PERDE TYPE STRING,
VERSO TYPE STRING,
ESPART TYPE STRING,
EVKORG TYPE STRING,
EVTWEG TYPE STRING,
MATNR TYPE STRING,
KUNNR TYPE STRING,
VALTY TYPE STRING,
VERSO_WAERS TYPE STRING,
AEMENG TYPE STRING,
AEMENG_UNI TYPE STRING,
AENETW TYPE STRING,
GUNETW TYPE STRING,
OAUMEN TYPE STRING,
OAUMEN_UNI TYPE STRING,
OAUWEN TYPE STRING,
RENETW TYPE STRING,
UMNETW TYPE STRING,
UMMENG TYPE STRING,
UMMENG_UNI TYPE STRING,
GUMENG TYPE STRING,
GUMENG_UNI TYPE STRING,
REMENG TYPE STRING,
REMENG_UNI TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RKCT704_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_RKCT704_STR-VERSIO sy-vline 
WA_RKCT704_STR-PLACTI sy-vline 
WA_RKCT704_STR-YEARB sy-vline 
WA_RKCT704_STR-PERDE sy-vline 
WA_RKCT704_STR-VERSO sy-vline 
WA_RKCT704_STR-ESPART sy-vline 
WA_RKCT704_STR-EVKORG sy-vline 
WA_RKCT704_STR-EVTWEG sy-vline 
WA_RKCT704_STR-MATNR sy-vline 
WA_RKCT704_STR-KUNNR sy-vline 
WA_RKCT704_STR-VALTY sy-vline 
WA_RKCT704_STR-VERSO_WAERS sy-vline 
WA_RKCT704_STR-AEMENG sy-vline 
WA_RKCT704_STR-AEMENG_UNI sy-vline 
WA_RKCT704_STR-AENETW sy-vline 
WA_RKCT704_STR-GUNETW sy-vline 
WA_RKCT704_STR-OAUMEN sy-vline 
WA_RKCT704_STR-OAUMEN_UNI sy-vline 
WA_RKCT704_STR-OAUWEN sy-vline 
WA_RKCT704_STR-RENETW sy-vline 
WA_RKCT704_STR-UMNETW sy-vline 
WA_RKCT704_STR-UMMENG sy-vline 
WA_RKCT704_STR-UMMENG_UNI sy-vline 
WA_RKCT704_STR-GUMENG sy-vline 
WA_RKCT704_STR-GUMENG_UNI sy-vline 
WA_RKCT704_STR-REMENG sy-vline 
WA_RKCT704_STR-REMENG_UNI sy-vline      INTO ld_text SEPARATED BY SPACE.

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