ABAP Select data from SAP table KALKU_ZI into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KALKU_ZI
*  INTO TABLE @DATA(IT_KALKU_ZI2).
*--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_KALKU_ZI INDEX 1 INTO DATA(WA_KALKU_ZI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KALKU_ZI>-MANDT = 1.
<KALKU_ZI>-WAEHR = 1.
<KALKU_ZI>-SZKART = 1.
<KALKU_ZI>-KONDDAT1 = 1.
<KALKU_ZI>-ZINSDAT1 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KALKU_ZI-KONDDAT2, sy-vline,
  WA_KALKU_ZI-ZINSDAT2, sy-vline,
  WA_KALKU_ZI-ZINS1, sy-vline,
  WA_KALKU_ZI-ZINS2, sy-vline,
  WA_KALKU_ZI-SZBMETH1, sy-vline,
  WA_KALKU_ZI-SZBMETH2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KALKU_ZI 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_KALKU_ZI 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_KALKU_ZI INTO WA_KALKU_ZI.


*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_KALKU_ZI_STR, 
MANDT TYPE STRING,
WAEHR TYPE STRING,
SZKART TYPE STRING,
KONDDAT1 TYPE STRING,
ZINSDAT1 TYPE STRING,
KONDDAT2 TYPE STRING,
ZINSDAT2 TYPE STRING,
ZINS1 TYPE STRING,
ZINS2 TYPE STRING,
SZBMETH1 TYPE STRING,
SZBMETH2 TYPE STRING,
SFWERK1 TYPE STRING,
SFWERK2 TYPE STRING,
SKALID1 TYPE STRING,
SKALID2 TYPE STRING,
ZINS1_ZERO TYPE STRING,
ZINS2_ZERO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KALKU_ZI_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_KALKU_ZI_STR-MANDT sy-vline 
WA_KALKU_ZI_STR-WAEHR sy-vline 
WA_KALKU_ZI_STR-SZKART sy-vline 
WA_KALKU_ZI_STR-KONDDAT1 sy-vline 
WA_KALKU_ZI_STR-ZINSDAT1 sy-vline 
WA_KALKU_ZI_STR-KONDDAT2 sy-vline 
WA_KALKU_ZI_STR-ZINSDAT2 sy-vline 
WA_KALKU_ZI_STR-ZINS1 sy-vline 
WA_KALKU_ZI_STR-ZINS2 sy-vline 
WA_KALKU_ZI_STR-SZBMETH1 sy-vline 
WA_KALKU_ZI_STR-SZBMETH2 sy-vline 
WA_KALKU_ZI_STR-SFWERK1 sy-vline 
WA_KALKU_ZI_STR-SFWERK2 sy-vline 
WA_KALKU_ZI_STR-SKALID1 sy-vline 
WA_KALKU_ZI_STR-SKALID2 sy-vline 
WA_KALKU_ZI_STR-ZINS1_ZERO sy-vline 
WA_KALKU_ZI_STR-ZINS2_ZERO sy-vline      INTO ld_text SEPARATED BY SPACE.

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