ABAP Select data from SAP table CVIS_KNB1_DYNP into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CVIS_KNB1_DYNP 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 CVIS_KNB1_DYNP. 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 CVIS_KNB1_DYNP 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_CVIS_KNB1_DYNP TYPE STANDARD TABLE OF CVIS_KNB1_DYNP,
      WA_CVIS_KNB1_DYNP TYPE CVIS_KNB1_DYNP,
      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: <CVIS_KNB1_DYNP> TYPE CVIS_KNB1_DYNP.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CVIS_KNB1_DYNP.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CVIS_KNB1_DYNP
  INTO TABLE IT_CVIS_KNB1_DYNP.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CVIS_KNB1_DYNP
*  INTO TABLE @DATA(IT_CVIS_KNB1_DYNP2).
*--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_CVIS_KNB1_DYNP INDEX 1 INTO DATA(WA_CVIS_KNB1_DYNP2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CVIS_KNB1_DYNP ASSIGNING <CVIS_KNB1_DYNP>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CVIS_KNB1_DYNP>-ZINDT = 1.
<CVIS_KNB1_DYNP>-ZINRT = 1.
<CVIS_KNB1_DYNP>-DATLZ = 1.
<CVIS_KNB1_DYNP>-KULTG = 1.
<CVIS_KNB1_DYNP>-WEBTR = 1.

ENDLOOP.

LOOP AT IT_CVIS_KNB1_DYNP INTO WA_CVIS_KNB1_DYNP.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CVIS_KNB1_DYNP-VLIBB, sy-vline,
  WA_CVIS_KNB1_DYNP-VRSZL, sy-vline,
  WA_CVIS_KNB1_DYNP-VERDT, sy-vline,
  WA_CVIS_KNB1_DYNP-VRSPR, sy-vline,
  WA_CVIS_KNB1_DYNP-PERNR, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_CVIS_KNB1_DYNP 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_CVIS_KNB1_DYNP 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_CVIS_KNB1_DYNP INTO WA_CVIS_KNB1_DYNP.


*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_CVIS_KNB1_DYNP_STR, 
ZINDT TYPE STRING,
ZINRT TYPE STRING,
DATLZ TYPE STRING,
KULTG TYPE STRING,
WEBTR TYPE STRING,
VLIBB TYPE STRING,
VRSZL TYPE STRING,
VERDT TYPE STRING,
VRSPR TYPE STRING,
PERNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CVIS_KNB1_DYNP_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_CVIS_KNB1_DYNP_STR-ZINDT sy-vline 
WA_CVIS_KNB1_DYNP_STR-ZINRT sy-vline 
WA_CVIS_KNB1_DYNP_STR-DATLZ sy-vline 
WA_CVIS_KNB1_DYNP_STR-KULTG sy-vline 
WA_CVIS_KNB1_DYNP_STR-WEBTR sy-vline 
WA_CVIS_KNB1_DYNP_STR-VLIBB sy-vline 
WA_CVIS_KNB1_DYNP_STR-VRSZL sy-vline 
WA_CVIS_KNB1_DYNP_STR-VERDT sy-vline 
WA_CVIS_KNB1_DYNP_STR-VRSPR sy-vline 
WA_CVIS_KNB1_DYNP_STR-PERNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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