ABAP Select data from SAP table RK70B into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RK70B 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 RK70B. 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 RK70B 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_RK70B TYPE STANDARD TABLE OF RK70B,
      WA_RK70B TYPE RK70B,
      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: <RK70B> TYPE RK70B.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RK70B.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RK70B
  INTO TABLE IT_RK70B.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RK70B
*  INTO TABLE @DATA(IT_RK70B2).
*--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_RK70B INDEX 1 INTO DATA(WA_RK70B2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RK70B ASSIGNING <RK70B>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RK70B>-KOKRS = 1.
<RK70B>-EXTNR = 1.
<RK70B>-KSTAR = 1.
<RK70B>-ESORT = 1.
<RK70B>-ERFNM = 1.

ENDLOOP.

LOOP AT IT_RK70B INTO WA_RK70B.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RK70B-ERFDT, sy-vline,
  WA_RK70B-AENDT, sy-vline,
  WA_RK70B-AENNM, sy-vline,
  WA_RK70B-FRFLG, sy-vline,
  WA_RK70B-KKFLG, sy-vline,
  WA_RK70B-TXFLG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RK70B 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_RK70B 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_RK70B INTO WA_RK70B.


*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 EXTNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RK70B-EXTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK70B-EXTNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KSTAR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RK70B-KSTAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK70B-KSTAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_RK70B-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK70B-SPRAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRCTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RK70B-PRCTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK70B-PRCTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REF_EXTNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RK70B-REF_EXTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK70B-REF_EXTNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEEHT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RK70B-MEEHT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RK70B-MEEHT.
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_RK70B_STR, 
KOKRS TYPE STRING,
EXTNR TYPE STRING,
KSTAR TYPE STRING,
ESORT TYPE STRING,
ERFNM TYPE STRING,
ERFDT TYPE STRING,
AENDT TYPE STRING,
AENNM TYPE STRING,
FRFLG TYPE STRING,
KKFLG TYPE STRING,
TXFLG TYPE STRING,
DLFLG TYPE STRING,
TXN08 TYPE STRING,
KTEXT TYPE STRING,
LTEXT TYPE STRING,
SPRAS TYPE STRING,
WERKS TYPE STRING,
BUKRS TYPE STRING,
PRCTR TYPE STRING,
REF_EXTNR TYPE STRING,
REF_KOKRS TYPE STRING,
KKART TYPE STRING,
BTGRP TYPE STRING,
HWGES TYPE STRING,
HWAER TYPE STRING,
LOSGR TYPE STRING,
MEEHT TYPE STRING,
VERSA TYPE STRING,
VERSM TYPE STRING,
KALSM TYPE STRING,
ZSCHL TYPE STRING,
KVEWE TYPE STRING,
KAPPL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RK70B_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_RK70B_STR-KOKRS sy-vline 
WA_RK70B_STR-EXTNR sy-vline 
WA_RK70B_STR-KSTAR sy-vline 
WA_RK70B_STR-ESORT sy-vline 
WA_RK70B_STR-ERFNM sy-vline 
WA_RK70B_STR-ERFDT sy-vline 
WA_RK70B_STR-AENDT sy-vline 
WA_RK70B_STR-AENNM sy-vline 
WA_RK70B_STR-FRFLG sy-vline 
WA_RK70B_STR-KKFLG sy-vline 
WA_RK70B_STR-TXFLG sy-vline 
WA_RK70B_STR-DLFLG sy-vline 
WA_RK70B_STR-TXN08 sy-vline 
WA_RK70B_STR-KTEXT sy-vline 
WA_RK70B_STR-LTEXT sy-vline 
WA_RK70B_STR-SPRAS sy-vline 
WA_RK70B_STR-WERKS sy-vline 
WA_RK70B_STR-BUKRS sy-vline 
WA_RK70B_STR-PRCTR sy-vline 
WA_RK70B_STR-REF_EXTNR sy-vline 
WA_RK70B_STR-REF_KOKRS sy-vline 
WA_RK70B_STR-KKART sy-vline 
WA_RK70B_STR-BTGRP sy-vline 
WA_RK70B_STR-HWGES sy-vline 
WA_RK70B_STR-HWAER sy-vline 
WA_RK70B_STR-LOSGR sy-vline 
WA_RK70B_STR-MEEHT sy-vline 
WA_RK70B_STR-VERSA sy-vline 
WA_RK70B_STR-VERSM sy-vline 
WA_RK70B_STR-KALSM sy-vline 
WA_RK70B_STR-ZSCHL sy-vline 
WA_RK70B_STR-KVEWE sy-vline 
WA_RK70B_STR-KAPPL sy-vline      INTO ld_text SEPARATED BY SPACE.

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