ABAP Select data from SAP table KV013 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP KV013 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 KV013. 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 KV013 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_KV013 TYPE STANDARD TABLE OF KV013,
      WA_KV013 TYPE KV013,
      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: <KV013> TYPE KV013.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_KV013.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM KV013
  INTO TABLE IT_KV013.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KV013
*  INTO TABLE @DATA(IT_KV0132).
*--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_KV013 INDEX 1 INTO DATA(WA_KV0132).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_KV013 ASSIGNING <KV013>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KV013>-AWQUL = 1.
<KV013>-OBJNR = 1.
<KV013>-AWVRS = 1.
<KV013>-ABKAT = 1.
<KV013>-AWRHI = 1.

ENDLOOP.

LOOP AT IT_KV013 INTO WA_KV013.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KV013-KSTAR, sy-vline,
  WA_KV013-HRKFT, sy-vline,
  WA_KV013-MATNR, sy-vline,
  WA_KV013-WERKS, sy-vline,
  WA_KV013-PAROB, sy-vline,
  WA_KV013-GJAHR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KV013 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_KV013 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_KV013 INTO WA_KV013.


*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 AWVRS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KV013-AWVRS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KV013-AWVRS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABKAT, internal->external for field ABKAT
CALL FUNCTION 'CONVERSION_EXIT_ABKAT_OUTPUT'
  EXPORTING
    input =                      WA_KV013-ABKAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KV013-ABKAT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KSTAR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KV013-KSTAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KV013-KSTAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_KV013-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KV013-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_KV013-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KV013-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WKGBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KV013-WKGBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KV013-WKGBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WKFBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KV013-WKFBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KV013-WKFBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WOGBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KV013-WOGBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KV013-WOGBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WTGBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KV013-WTGBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KV013-WTGBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field KKGBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KV013-KKGBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KV013-KKGBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field KKFBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KV013-KKFBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KV013-KKFBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field KOGBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KV013-KOGBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KV013-KOGBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field KTGBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KV013-KTGBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KV013-KTGBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABKAT, internal->external for field ABKTN
CALL FUNCTION 'CONVERSION_EXIT_ABKAT_OUTPUT'
  EXPORTING
    input =                      WA_KV013-ABKTN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KV013-ABKTN.
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_KV013_STR, 
AWQUL TYPE STRING,
OBJNR TYPE STRING,
AWVRS TYPE STRING,
ABKAT TYPE STRING,
AWRHI TYPE STRING,
KSTAR TYPE STRING,
HRKFT TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
PAROB TYPE STRING,
GJAHR TYPE STRING,
PERIO TYPE STRING,
WKGBTR TYPE STRING,
WKFBTR TYPE STRING,
WOGBTR TYPE STRING,
WTGBTR TYPE STRING,
KKGBTR TYPE STRING,
KKFBTR TYPE STRING,
KOGBTR TYPE STRING,
KTGBTR TYPE STRING,
ABKTN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KV013_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_KV013_STR-AWQUL sy-vline 
WA_KV013_STR-OBJNR sy-vline 
WA_KV013_STR-AWVRS sy-vline 
WA_KV013_STR-ABKAT sy-vline 
WA_KV013_STR-AWRHI sy-vline 
WA_KV013_STR-KSTAR sy-vline 
WA_KV013_STR-HRKFT sy-vline 
WA_KV013_STR-MATNR sy-vline 
WA_KV013_STR-WERKS sy-vline 
WA_KV013_STR-PAROB sy-vline 
WA_KV013_STR-GJAHR sy-vline 
WA_KV013_STR-PERIO sy-vline 
WA_KV013_STR-WKGBTR sy-vline 
WA_KV013_STR-WKFBTR sy-vline 
WA_KV013_STR-WOGBTR sy-vline 
WA_KV013_STR-WTGBTR sy-vline 
WA_KV013_STR-KKGBTR sy-vline 
WA_KV013_STR-KKFBTR sy-vline 
WA_KV013_STR-KOGBTR sy-vline 
WA_KV013_STR-KTGBTR sy-vline 
WA_KV013_STR-ABKTN sy-vline      INTO ld_text SEPARATED BY SPACE.

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