ABAP Select data from SAP table PTCOR_CORE_STRUC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PTCOR_CORE_STRUC
*  INTO TABLE @DATA(IT_PTCOR_CORE_STRUC2).
*--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_PTCOR_CORE_STRUC INDEX 1 INTO DATA(WA_PTCOR_CORE_STRUC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PTCOR_CORE_STRUC>-OPERATION = 1.
<PTCOR_CORE_STRUC>-PDSNR = 1.
<PTCOR_CORE_STRUC>-PERNR = 1.
<PTCOR_CORE_STRUC>-LDATE = 1.
<PTCOR_CORE_STRUC>-LTIME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PTCOR_CORE_STRUC-ERDAT, sy-vline,
  WA_PTCOR_CORE_STRUC-ERTIM, sy-vline,
  WA_PTCOR_CORE_STRUC-SATZA, sy-vline,
  WA_PTCOR_CORE_STRUC-TERID, sy-vline,
  WA_PTCOR_CORE_STRUC-ABWGR, sy-vline,
  WA_PTCOR_CORE_STRUC-ORIGF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PTCOR_CORE_STRUC 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_PTCOR_CORE_STRUC 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_PTCOR_CORE_STRUC INTO WA_PTCOR_CORE_STRUC.


*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.

*Conversion exit DALLF, internal->external for field DALLF
CALL FUNCTION 'CONVERSION_EXIT_DALLF_OUTPUT'
  EXPORTING
    input =                      WA_PTCOR_CORE_STRUC-DALLF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PTCOR_CORE_STRUC-DALLF.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_PTCOR_CORE_STRUC_STR, 
OPERATION TYPE STRING,
PDSNR TYPE STRING,
PERNR TYPE STRING,
LDATE TYPE STRING,
LTIME TYPE STRING,
ERDAT TYPE STRING,
ERTIM TYPE STRING,
SATZA TYPE STRING,
TERID TYPE STRING,
ABWGR TYPE STRING,
ORIGF TYPE STRING,
DALLF TYPE STRING,
ZAUSW TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PTCOR_CORE_STRUC_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_PTCOR_CORE_STRUC_STR-OPERATION sy-vline 
WA_PTCOR_CORE_STRUC_STR-PDSNR sy-vline 
WA_PTCOR_CORE_STRUC_STR-PERNR sy-vline 
WA_PTCOR_CORE_STRUC_STR-LDATE sy-vline 
WA_PTCOR_CORE_STRUC_STR-LTIME sy-vline 
WA_PTCOR_CORE_STRUC_STR-ERDAT sy-vline 
WA_PTCOR_CORE_STRUC_STR-ERTIM sy-vline 
WA_PTCOR_CORE_STRUC_STR-SATZA sy-vline 
WA_PTCOR_CORE_STRUC_STR-TERID sy-vline 
WA_PTCOR_CORE_STRUC_STR-ABWGR sy-vline 
WA_PTCOR_CORE_STRUC_STR-ORIGF sy-vline 
WA_PTCOR_CORE_STRUC_STR-DALLF sy-vline 
WA_PTCOR_CORE_STRUC_STR-ZAUSW sy-vline      INTO ld_text SEPARATED BY SPACE.

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