ABAP Select data from SAP table PKW_HKWPNJT0_DATA into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PKW_HKWPNJT0_DATA 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 PKW_HKWPNJT0_DATA. 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 PKW_HKWPNJT0_DATA 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_PKW_HKWPNJT0_DATA TYPE STANDARD TABLE OF PKW_HKWPNJT0_DATA,
      WA_PKW_HKWPNJT0_DATA TYPE PKW_HKWPNJT0_DATA,
      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: <PKW_HKWPNJT0_DATA> TYPE PKW_HKWPNJT0_DATA.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PKW_HKWPNJT0_DATA.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PKW_HKWPNJT0_DATA
  INTO TABLE IT_PKW_HKWPNJT0_DATA.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PKW_HKWPNJT0_DATA
*  INTO TABLE @DATA(IT_PKW_HKWPNJT0_DATA2).
*--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_PKW_HKWPNJT0_DATA INDEX 1 INTO DATA(WA_PKW_HKWPNJT0_DATA2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PKW_HKWPNJT0_DATA ASSIGNING <PKW_HKWPNJT0_DATA>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PKW_HKWPNJT0_DATA>-PERNR = 1.
<PKW_HKWPNJT0_DATA>-FNAME = 1.
<PKW_HKWPNJT0_DATA>-SNAME = 1.
<PKW_HKWPNJT0_DATA>-TNAME = 1.
<PKW_HKWPNJT0_DATA>-LNAME = 1.

ENDLOOP.

LOOP AT IT_PKW_HKWPNJT0_DATA INTO WA_PKW_HKWPNJT0_DATA.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PKW_HKWPNJT0_DATA-APPTY, sy-vline,
  WA_PKW_HKWPNJT0_DATA-EEADD, sy-vline,
  WA_PKW_HKWPNJT0_DATA-PMNUM, sy-vline,
  WA_PKW_HKWPNJT0_DATA-CIVID, sy-vline,
  WA_PKW_HKWPNJT0_DATA-BIRYR, sy-vline,
  WA_PKW_HKWPNJT0_DATA-BIRMT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PKW_HKWPNJT0_DATA 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_PKW_HKWPNJT0_DATA 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_PKW_HKWPNJT0_DATA INTO WA_PKW_HKWPNJT0_DATA.


*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_PKW_HKWPNJT0_DATA_STR, 
PERNR TYPE STRING,
FNAME TYPE STRING,
SNAME TYPE STRING,
TNAME TYPE STRING,
LNAME TYPE STRING,
APPTY TYPE STRING,
EEADD TYPE STRING,
PMNUM TYPE STRING,
CIVID TYPE STRING,
BIRYR TYPE STRING,
BIRMT TYPE STRING,
BIRDY TYPE STRING,
NATIO TYPE STRING,
NANUM TYPE STRING,
ARTCL TYPE STRING,
NATYR TYPE STRING,
NATMT TYPE STRING,
NATDY TYPE STRING,
ERNAM TYPE STRING,
RENUM TYPE STRING,
JOIYR TYPE STRING,
JOIMT TYPE STRING,
JOIDY TYPE STRING,
CONYR TYPE STRING,
CONMT TYPE STRING,
CONDY TYPE STRING,
JOBTI TYPE STRING,
SALIN TYPE STRING,
SALDE TYPE STRING,
SOAIN TYPE STRING,
SOADE TYPE STRING,
OTAIN TYPE STRING,
OTADE TYPE STRING,
LSEYR TYPE STRING,
LSEMT TYPE STRING,
LSEDY TYPE STRING,
SEPYR TYPE STRING,
SEPMT TYPE STRING,
SEPDY TYPE STRING,
SEPRE TYPE STRING,
ABDPS TYPE STRING,
DT_TBL TYPE STRING,
ALLOW TYPE STRING,
FRWRD TYPE STRING,
RPNAM TYPE STRING,
RPJBT TYPE STRING,
SIGDY TYPE STRING,
SIGMT TYPE STRING,
SIGYR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PKW_HKWPNJT0_DATA_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_PKW_HKWPNJT0_DATA_STR-PERNR sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-FNAME sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-SNAME sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-TNAME sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-LNAME sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-APPTY sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-EEADD sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-PMNUM sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-CIVID sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-BIRYR sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-BIRMT sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-BIRDY sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-NATIO sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-NANUM sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-ARTCL sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-NATYR sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-NATMT sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-NATDY sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-ERNAM sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-RENUM sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-JOIYR sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-JOIMT sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-JOIDY sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-CONYR sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-CONMT sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-CONDY sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-JOBTI sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-SALIN sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-SALDE sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-SOAIN sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-SOADE sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-OTAIN sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-OTADE sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-LSEYR sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-LSEMT sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-LSEDY sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-SEPYR sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-SEPMT sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-SEPDY sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-SEPRE sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-ABDPS sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-DT_TBL sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-ALLOW sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-FRWRD sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-RPNAM sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-RPJBT sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-SIGDY sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-SIGMT sy-vline 
WA_PKW_HKWPNJT0_DATA_STR-SIGYR sy-vline      INTO ld_text SEPARATED BY SPACE.

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