ABAP Select data from SAP table UPKK2A into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP UPKK2A 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 UPKK2A. 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 UPKK2A 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_UPKK2A TYPE STANDARD TABLE OF UPKK2A,
      WA_UPKK2A TYPE UPKK2A,
      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: <UPKK2A> TYPE UPKK2A.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_UPKK2A.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM UPKK2A
  INTO TABLE IT_UPKK2A.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM UPKK2A
*  INTO TABLE @DATA(IT_UPKK2A2).
*--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_UPKK2A INDEX 1 INTO DATA(WA_UPKK2A2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_UPKK2A ASSIGNING <UPKK2A>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<UPKK2A>-SATZA = 1.
<UPKK2A>-TERID = 1.
<UPKK2A>-LDATE = 1.
<UPKK2A>-LTIME = 1.
<UPKK2A>-ERDAT = 1.

ENDLOOP.

LOOP AT IT_UPKK2A INTO WA_UPKK2A.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_UPKK2A-ERTIM, sy-vline,
  WA_UPKK2A-BUDAT, sy-vline,
  WA_UPKK2A-ARBPL, sy-vline,
  WA_UPKK2A-WERKS, sy-vline,
  WA_UPKK2A-ZAUSW, sy-vline,
  WA_UPKK2A-AUFNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_UPKK2A 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_UPKK2A 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_UPKK2A INTO WA_UPKK2A.


*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 AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_UPKK2A-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_UPKK2A-AUFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field APLFL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_UPKK2A-APLFL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_UPKK2A-APLFL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field VORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_UPKK2A-VORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_UPKK2A-VORNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field UVORN
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_UPKK2A-UVORN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_UPKK2A-UVORN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_UPKK2A-MEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_UPKK2A-MEINH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ILE01
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_UPKK2A-ILE01
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_UPKK2A-ILE01.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ILE02
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_UPKK2A-ILE02
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_UPKK2A-ILE02.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ILE03
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_UPKK2A-ILE03
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_UPKK2A-ILE03.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ILE04
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_UPKK2A-ILE04
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_UPKK2A-ILE04.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ILE05
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_UPKK2A-ILE05
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_UPKK2A-ILE05.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ILE06
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_UPKK2A-ILE06
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_UPKK2A-ILE06.
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_UPKK2A_STR, 
SATZA TYPE STRING,
TERID TYPE STRING,
LDATE TYPE STRING,
LTIME TYPE STRING,
ERDAT TYPE STRING,
ERTIM TYPE STRING,
BUDAT TYPE STRING,
ARBPL TYPE STRING,
WERKS TYPE STRING,
ZAUSW TYPE STRING,
AUFNR TYPE STRING,
APLFL TYPE STRING,
VORNR TYPE STRING,
UVORN TYPE STRING,
SPLIT TYPE STRING,
KAPAR TYPE STRING,
LMNGA TYPE STRING,
XMNGA TYPE STRING,
MEINH TYPE STRING,
GRUND TYPE STRING,
SGRUN TYPE STRING,
ABARB TYPE STRING,
PEDD TYPE STRING,
PEDZ TYPE STRING,
LTXA1 TYPE STRING,
ISM01 TYPE STRING,
ILE01 TYPE STRING,
LEK01 TYPE STRING,
ISM02 TYPE STRING,
ILE02 TYPE STRING,
LEK02 TYPE STRING,
ISM03 TYPE STRING,
ILE03 TYPE STRING,
LEK03 TYPE STRING,
ISM04 TYPE STRING,
ILE04 TYPE STRING,
LEK04 TYPE STRING,
ISM05 TYPE STRING,
ILE05 TYPE STRING,
LEK05 TYPE STRING,
ISM06 TYPE STRING,
ILE06 TYPE STRING,
LEK06 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_UPKK2A_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_UPKK2A_STR-SATZA sy-vline 
WA_UPKK2A_STR-TERID sy-vline 
WA_UPKK2A_STR-LDATE sy-vline 
WA_UPKK2A_STR-LTIME sy-vline 
WA_UPKK2A_STR-ERDAT sy-vline 
WA_UPKK2A_STR-ERTIM sy-vline 
WA_UPKK2A_STR-BUDAT sy-vline 
WA_UPKK2A_STR-ARBPL sy-vline 
WA_UPKK2A_STR-WERKS sy-vline 
WA_UPKK2A_STR-ZAUSW sy-vline 
WA_UPKK2A_STR-AUFNR sy-vline 
WA_UPKK2A_STR-APLFL sy-vline 
WA_UPKK2A_STR-VORNR sy-vline 
WA_UPKK2A_STR-UVORN sy-vline 
WA_UPKK2A_STR-SPLIT sy-vline 
WA_UPKK2A_STR-KAPAR sy-vline 
WA_UPKK2A_STR-LMNGA sy-vline 
WA_UPKK2A_STR-XMNGA sy-vline 
WA_UPKK2A_STR-MEINH sy-vline 
WA_UPKK2A_STR-GRUND sy-vline 
WA_UPKK2A_STR-SGRUN sy-vline 
WA_UPKK2A_STR-ABARB sy-vline 
WA_UPKK2A_STR-PEDD sy-vline 
WA_UPKK2A_STR-PEDZ sy-vline 
WA_UPKK2A_STR-LTXA1 sy-vline 
WA_UPKK2A_STR-ISM01 sy-vline 
WA_UPKK2A_STR-ILE01 sy-vline 
WA_UPKK2A_STR-LEK01 sy-vline 
WA_UPKK2A_STR-ISM02 sy-vline 
WA_UPKK2A_STR-ILE02 sy-vline 
WA_UPKK2A_STR-LEK02 sy-vline 
WA_UPKK2A_STR-ISM03 sy-vline 
WA_UPKK2A_STR-ILE03 sy-vline 
WA_UPKK2A_STR-LEK03 sy-vline 
WA_UPKK2A_STR-ISM04 sy-vline 
WA_UPKK2A_STR-ILE04 sy-vline 
WA_UPKK2A_STR-LEK04 sy-vline 
WA_UPKK2A_STR-ISM05 sy-vline 
WA_UPKK2A_STR-ILE05 sy-vline 
WA_UPKK2A_STR-LEK05 sy-vline 
WA_UPKK2A_STR-ISM06 sy-vline 
WA_UPKK2A_STR-ILE06 sy-vline 
WA_UPKK2A_STR-LEK06 sy-vline      INTO ld_text SEPARATED BY SPACE.

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