ABAP Select data from SAP table PTKPS_IJ_MAX into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PTKPS_IJ_MAX
*  INTO TABLE @DATA(IT_PTKPS_IJ_MAX2).
*--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_PTKPS_IJ_MAX INDEX 1 INTO DATA(WA_PTKPS_IJ_MAX2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PTKPS_IJ_MAX>-DATV1 = 1.
<PTKPS_IJ_MAX>-UHRV1 = 1.
<PTKPS_IJ_MAX>-DATB1 = 1.
<PTKPS_IJ_MAX>-UHRB1 = 1.
<PTKPS_IJ_MAX>-VPFPH = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PTKPS_IJ_MAX-VPFKZ, sy-vline,
  WA_PTKPS_IJ_MAX-ANSTD, sy-vline,
  WA_PTKPS_IJ_MAX-ANZTA, sy-vline,
  WA_PTKPS_IJ_MAX-ZLAND, sy-vline,
  WA_PTKPS_IJ_MAX-RGION, sy-vline,
  WA_PTKPS_IJ_MAX-ZIKEY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PTKPS_IJ_MAX 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_PTKPS_IJ_MAX 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_PTKPS_IJ_MAX INTO WA_PTKPS_IJ_MAX.


*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_PTKPS_IJ_MAX_STR, 
DATV1 TYPE STRING,
UHRV1 TYPE STRING,
DATB1 TYPE STRING,
UHRB1 TYPE STRING,
VPFPH TYPE STRING,
VPFKZ TYPE STRING,
ANSTD TYPE STRING,
ANZTA TYPE STRING,
ZLAND TYPE STRING,
RGION TYPE STRING,
ZIKEY TYPE STRING,
KZTKT TYPE STRING,
KZREA TYPE STRING,
BETFZ TYPE STRING,
BETFA TYPE STRING,
BETKU TYPE STRING,
WAERS TYPE STRING,
ANZAL_IJ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PTKPS_IJ_MAX_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_PTKPS_IJ_MAX_STR-DATV1 sy-vline 
WA_PTKPS_IJ_MAX_STR-UHRV1 sy-vline 
WA_PTKPS_IJ_MAX_STR-DATB1 sy-vline 
WA_PTKPS_IJ_MAX_STR-UHRB1 sy-vline 
WA_PTKPS_IJ_MAX_STR-VPFPH sy-vline 
WA_PTKPS_IJ_MAX_STR-VPFKZ sy-vline 
WA_PTKPS_IJ_MAX_STR-ANSTD sy-vline 
WA_PTKPS_IJ_MAX_STR-ANZTA sy-vline 
WA_PTKPS_IJ_MAX_STR-ZLAND sy-vline 
WA_PTKPS_IJ_MAX_STR-RGION sy-vline 
WA_PTKPS_IJ_MAX_STR-ZIKEY sy-vline 
WA_PTKPS_IJ_MAX_STR-KZTKT sy-vline 
WA_PTKPS_IJ_MAX_STR-KZREA sy-vline 
WA_PTKPS_IJ_MAX_STR-BETFZ sy-vline 
WA_PTKPS_IJ_MAX_STR-BETFA sy-vline 
WA_PTKPS_IJ_MAX_STR-BETKU sy-vline 
WA_PTKPS_IJ_MAX_STR-WAERS sy-vline 
WA_PTKPS_IJ_MAX_STR-ANZAL_IJ sy-vline      INTO ld_text SEPARATED BY SPACE.

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