ABAP Select data from SAP table HHKCPFB0_ALV3 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP HHKCPFB0_ALV3 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 HHKCPFB0_ALV3. 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 HHKCPFB0_ALV3 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_HHKCPFB0_ALV3 TYPE STANDARD TABLE OF HHKCPFB0_ALV3,
      WA_HHKCPFB0_ALV3 TYPE HHKCPFB0_ALV3,
      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: <HHKCPFB0_ALV3> TYPE HHKCPFB0_ALV3.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_HHKCPFB0_ALV3.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM HHKCPFB0_ALV3
  INTO TABLE IT_HHKCPFB0_ALV3.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HHKCPFB0_ALV3
*  INTO TABLE @DATA(IT_HHKCPFB0_ALV32).
*--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_HHKCPFB0_ALV3 INDEX 1 INTO DATA(WA_HHKCPFB0_ALV32).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_HHKCPFB0_ALV3 ASSIGNING <HHKCPFB0_ALV3>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HHKCPFB0_ALV3>-PERNR = 1.
<HHKCPFB0_ALV3>-ENAME = 1.
<HHKCPFB0_ALV3>-IDNUM = 1.
<HHKCPFB0_ALV3>-HIRED = 1.
<HHKCPFB0_ALV3>-EFBEG = 1.

ENDLOOP.

LOOP AT IT_HHKCPFB0_ALV3 INTO WA_HHKCPFB0_ALV3.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HHKCPFB0_ALV3-EFEND, sy-vline,
  WA_HHKCPFB0_ALV3-BASAL, sy-vline,
  WA_HHKCPFB0_ALV3-BASIS, sy-vline,
  WA_HHKCPFB0_ALV3-ERMPR, sy-vline,
  WA_HHKCPFB0_ALV3-ERNPR, sy-vline,
  WA_HHKCPFB0_ALV3-EEMPR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HHKCPFB0_ALV3 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_HHKCPFB0_ALV3 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_HHKCPFB0_ALV3 INTO WA_HHKCPFB0_ALV3.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_HHKCPFB0_ALV3_STR, 
PERNR TYPE STRING,
ENAME TYPE STRING,
IDNUM TYPE STRING,
HIRED TYPE STRING,
EFBEG TYPE STRING,
EFEND TYPE STRING,
BASAL TYPE STRING,
BASIS TYPE STRING,
ERMPR TYPE STRING,
ERNPR TYPE STRING,
EEMPR TYPE STRING,
EENPR TYPE STRING,
ERMCO TYPE STRING,
ERNCO TYPE STRING,
ERTOT TYPE STRING,
EEMCO TYPE STRING,
EENCO TYPE STRING,
EETOT TYPE STRING,
TTYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HHKCPFB0_ALV3_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_HHKCPFB0_ALV3_STR-PERNR sy-vline 
WA_HHKCPFB0_ALV3_STR-ENAME sy-vline 
WA_HHKCPFB0_ALV3_STR-IDNUM sy-vline 
WA_HHKCPFB0_ALV3_STR-HIRED sy-vline 
WA_HHKCPFB0_ALV3_STR-EFBEG sy-vline 
WA_HHKCPFB0_ALV3_STR-EFEND sy-vline 
WA_HHKCPFB0_ALV3_STR-BASAL sy-vline 
WA_HHKCPFB0_ALV3_STR-BASIS sy-vline 
WA_HHKCPFB0_ALV3_STR-ERMPR sy-vline 
WA_HHKCPFB0_ALV3_STR-ERNPR sy-vline 
WA_HHKCPFB0_ALV3_STR-EEMPR sy-vline 
WA_HHKCPFB0_ALV3_STR-EENPR sy-vline 
WA_HHKCPFB0_ALV3_STR-ERMCO sy-vline 
WA_HHKCPFB0_ALV3_STR-ERNCO sy-vline 
WA_HHKCPFB0_ALV3_STR-ERTOT sy-vline 
WA_HHKCPFB0_ALV3_STR-EEMCO sy-vline 
WA_HHKCPFB0_ALV3_STR-EENCO sy-vline 
WA_HHKCPFB0_ALV3_STR-EETOT sy-vline 
WA_HHKCPFB0_ALV3_STR-TTYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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