ABAP Select data from SAP table PKZ_DED_LGART 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 PKZ_DED_LGART 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 PKZ_DED_LGART. 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 PKZ_DED_LGART 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_PKZ_DED_LGART TYPE STANDARD TABLE OF PKZ_DED_LGART,
      WA_PKZ_DED_LGART TYPE PKZ_DED_LGART,
      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: <PKZ_DED_LGART> TYPE PKZ_DED_LGART.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PKZ_DED_LGART
*  INTO TABLE @DATA(IT_PKZ_DED_LGART2).
*--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_PKZ_DED_LGART INDEX 1 INTO DATA(WA_PKZ_DED_LGART2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PKZ_DED_LGART>-ABART = 1.
<PKZ_DED_LGART>-LGART = 1.
<PKZ_DED_LGART>-APZNR = 1.
<PKZ_DED_LGART>-CNTR1 = 1.
<PKZ_DED_LGART>-CNTR2 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PKZ_DED_LGART-CNTR3, sy-vline,
  WA_PKZ_DED_LGART-ALZNR, sy-vline,
  WA_PKZ_DED_LGART-C1ZNR, sy-vline,
  WA_PKZ_DED_LGART-BTZNR, sy-vline,
  WA_PKZ_DED_LGART-ABZNR, sy-vline,
  WA_PKZ_DED_LGART-V0TYP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PKZ_DED_LGART 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_PKZ_DED_LGART 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_PKZ_DED_LGART INTO WA_PKZ_DED_LGART.


*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_PKZ_DED_LGART_STR, 
ABART TYPE STRING,
LGART TYPE STRING,
APZNR TYPE STRING,
CNTR1 TYPE STRING,
CNTR2 TYPE STRING,
CNTR3 TYPE STRING,
ALZNR TYPE STRING,
C1ZNR TYPE STRING,
BTZNR TYPE STRING,
ABZNR TYPE STRING,
V0TYP TYPE STRING,
V0ZNR TYPE STRING,
ZEINH TYPE STRING,
BETPE TYPE STRING,
ANZHL TYPE STRING,
BETRG TYPE STRING,
RTE_CURR TYPE STRING,
AMT_CURR TYPE STRING,
PRIO TYPE STRING,
POSSIBLE TYPE STRING,
WEIGH TYPE STRING,
ENNUM TYPE STRING,
GPRIO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PKZ_DED_LGART_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_PKZ_DED_LGART_STR-ABART sy-vline 
WA_PKZ_DED_LGART_STR-LGART sy-vline 
WA_PKZ_DED_LGART_STR-APZNR sy-vline 
WA_PKZ_DED_LGART_STR-CNTR1 sy-vline 
WA_PKZ_DED_LGART_STR-CNTR2 sy-vline 
WA_PKZ_DED_LGART_STR-CNTR3 sy-vline 
WA_PKZ_DED_LGART_STR-ALZNR sy-vline 
WA_PKZ_DED_LGART_STR-C1ZNR sy-vline 
WA_PKZ_DED_LGART_STR-BTZNR sy-vline 
WA_PKZ_DED_LGART_STR-ABZNR sy-vline 
WA_PKZ_DED_LGART_STR-V0TYP sy-vline 
WA_PKZ_DED_LGART_STR-V0ZNR sy-vline 
WA_PKZ_DED_LGART_STR-ZEINH sy-vline 
WA_PKZ_DED_LGART_STR-BETPE sy-vline 
WA_PKZ_DED_LGART_STR-ANZHL sy-vline 
WA_PKZ_DED_LGART_STR-BETRG sy-vline 
WA_PKZ_DED_LGART_STR-RTE_CURR sy-vline 
WA_PKZ_DED_LGART_STR-AMT_CURR sy-vline 
WA_PKZ_DED_LGART_STR-PRIO sy-vline 
WA_PKZ_DED_LGART_STR-POSSIBLE sy-vline 
WA_PKZ_DED_LGART_STR-WEIGH sy-vline 
WA_PKZ_DED_LGART_STR-ENNUM sy-vline 
WA_PKZ_DED_LGART_STR-GPRIO sy-vline      INTO ld_text SEPARATED BY SPACE.

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