ABAP Select data from SAP table KKATAB3 into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP KKATAB3 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 KKATAB3. 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 KKATAB3 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_KKATAB3 TYPE STANDARD TABLE OF KKATAB3,
      WA_KKATAB3 TYPE KKATAB3,
      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: <KKATAB3> TYPE KKATAB3.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_KKATAB3.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM KKATAB3
  INTO TABLE IT_KKATAB3.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KKATAB3
*  INTO TABLE @DATA(IT_KKATAB32).
*--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_KKATAB3 INDEX 1 INTO DATA(WA_KKATAB32).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_KKATAB3 ASSIGNING <KKATAB3>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KKATAB3>-NR = 1.
<KKATAB3>-WRTTP = 1.
<KKATAB3>-VERSN = 1.
<KKATAB3>-GJAHR = 1.
<KKATAB3>-SBJHR = 1.

ENDLOOP.

LOOP AT IT_KKATAB3 INTO WA_KKATAB3.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KKATAB3-WRT01K, sy-vline,
  WA_KKATAB3-WRT02K, sy-vline,
  WA_KKATAB3-WRT03K, sy-vline,
  WA_KKATAB3-WRT04K, sy-vline,
  WA_KKATAB3-WRT05K, sy-vline,
  WA_KKATAB3-WRT06K, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KKATAB3 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_KKATAB3 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_KKATAB3 INTO WA_KKATAB3.


*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 WRTTP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KKATAB3-WRTTP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKATAB3-WRTTP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VERSN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KKATAB3-VERSN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKATAB3-VERSN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_KKATAB3-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKATAB3-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT01K
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKATAB3-WRT01K
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKATAB3-WRT01K.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT02K
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKATAB3-WRT02K
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKATAB3-WRT02K.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT03K
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKATAB3-WRT03K
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKATAB3-WRT03K.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT04K
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKATAB3-WRT04K
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKATAB3-WRT04K.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT05K
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKATAB3-WRT05K
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKATAB3-WRT05K.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT06K
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKATAB3-WRT06K
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKATAB3-WRT06K.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT07K
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKATAB3-WRT07K
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKATAB3-WRT07K.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT08K
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKATAB3-WRT08K
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKATAB3-WRT08K.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT09K
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKATAB3-WRT09K
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKATAB3-WRT09K.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT10K
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKATAB3-WRT10K
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKATAB3-WRT10K.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT11K
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKATAB3-WRT11K
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKATAB3-WRT11K.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT12K
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKATAB3-WRT12K
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKATAB3-WRT12K.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT13K
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKATAB3-WRT13K
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKATAB3-WRT13K.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT14K
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKATAB3-WRT14K
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKATAB3-WRT14K.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT15K
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKATAB3-WRT15K
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKATAB3-WRT15K.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT16K
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKATAB3-WRT16K
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKATAB3-WRT16K.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT01KB
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKATAB3-WRT01KB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKATAB3-WRT01KB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT02KB
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKATAB3-WRT02KB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKATAB3-WRT02KB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT03KB
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKATAB3-WRT03KB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKATAB3-WRT03KB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT04KB
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKATAB3-WRT04KB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKATAB3-WRT04KB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT05KB
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKATAB3-WRT05KB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKATAB3-WRT05KB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT06KB
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKATAB3-WRT06KB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKATAB3-WRT06KB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT07KB
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKATAB3-WRT07KB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKATAB3-WRT07KB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT08KB
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKATAB3-WRT08KB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKATAB3-WRT08KB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT09KB
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKATAB3-WRT09KB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKATAB3-WRT09KB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT10KB
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKATAB3-WRT10KB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKATAB3-WRT10KB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT11KB
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKATAB3-WRT11KB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKATAB3-WRT11KB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT12KB
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKATAB3-WRT12KB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKATAB3-WRT12KB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT13KB
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKATAB3-WRT13KB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKATAB3-WRT13KB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT14KB
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKATAB3-WRT14KB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKATAB3-WRT14KB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT15KB
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKATAB3-WRT15KB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKATAB3-WRT15KB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WRT16KB
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KKATAB3-WRT16KB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKATAB3-WRT16KB.
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_KKATAB3_STR, 
NR TYPE STRING,
WRTTP TYPE STRING,
VERSN TYPE STRING,
GJAHR TYPE STRING,
SBJHR TYPE STRING,
WRT01K TYPE STRING,
WRT02K TYPE STRING,
WRT03K TYPE STRING,
WRT04K TYPE STRING,
WRT05K TYPE STRING,
WRT06K TYPE STRING,
WRT07K TYPE STRING,
WRT08K TYPE STRING,
WRT09K TYPE STRING,
WRT10K TYPE STRING,
WRT11K TYPE STRING,
WRT12K TYPE STRING,
WRT13K TYPE STRING,
WRT14K TYPE STRING,
WRT15K TYPE STRING,
WRT16K TYPE STRING,
WRT01KB TYPE STRING,
WRT02KB TYPE STRING,
WRT03KB TYPE STRING,
WRT04KB TYPE STRING,
WRT05KB TYPE STRING,
WRT06KB TYPE STRING,
WRT07KB TYPE STRING,
WRT08KB TYPE STRING,
WRT09KB TYPE STRING,
WRT10KB TYPE STRING,
WRT11KB TYPE STRING,
WRT12KB TYPE STRING,
WRT13KB TYPE STRING,
WRT14KB TYPE STRING,
WRT15KB TYPE STRING,
WRT16KB TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KKATAB3_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_KKATAB3_STR-NR sy-vline 
WA_KKATAB3_STR-WRTTP sy-vline 
WA_KKATAB3_STR-VERSN sy-vline 
WA_KKATAB3_STR-GJAHR sy-vline 
WA_KKATAB3_STR-SBJHR sy-vline 
WA_KKATAB3_STR-WRT01K sy-vline 
WA_KKATAB3_STR-WRT02K sy-vline 
WA_KKATAB3_STR-WRT03K sy-vline 
WA_KKATAB3_STR-WRT04K sy-vline 
WA_KKATAB3_STR-WRT05K sy-vline 
WA_KKATAB3_STR-WRT06K sy-vline 
WA_KKATAB3_STR-WRT07K sy-vline 
WA_KKATAB3_STR-WRT08K sy-vline 
WA_KKATAB3_STR-WRT09K sy-vline 
WA_KKATAB3_STR-WRT10K sy-vline 
WA_KKATAB3_STR-WRT11K sy-vline 
WA_KKATAB3_STR-WRT12K sy-vline 
WA_KKATAB3_STR-WRT13K sy-vline 
WA_KKATAB3_STR-WRT14K sy-vline 
WA_KKATAB3_STR-WRT15K sy-vline 
WA_KKATAB3_STR-WRT16K sy-vline 
WA_KKATAB3_STR-WRT01KB sy-vline 
WA_KKATAB3_STR-WRT02KB sy-vline 
WA_KKATAB3_STR-WRT03KB sy-vline 
WA_KKATAB3_STR-WRT04KB sy-vline 
WA_KKATAB3_STR-WRT05KB sy-vline 
WA_KKATAB3_STR-WRT06KB sy-vline 
WA_KKATAB3_STR-WRT07KB sy-vline 
WA_KKATAB3_STR-WRT08KB sy-vline 
WA_KKATAB3_STR-WRT09KB sy-vline 
WA_KKATAB3_STR-WRT10KB sy-vline 
WA_KKATAB3_STR-WRT11KB sy-vline 
WA_KKATAB3_STR-WRT12KB sy-vline 
WA_KKATAB3_STR-WRT13KB sy-vline 
WA_KKATAB3_STR-WRT14KB sy-vline 
WA_KKATAB3_STR-WRT15KB sy-vline 
WA_KKATAB3_STR-WRT16KB sy-vline      INTO ld_text SEPARATED BY SPACE.

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