ABAP Select data from SAP table PSHLP_HIER_KEY_ST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PSHLP_HIER_KEY_ST
*  INTO TABLE @DATA(IT_PSHLP_HIER_KEY_ST2).
*--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_PSHLP_HIER_KEY_ST INDEX 1 INTO DATA(WA_PSHLP_HIER_KEY_ST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PSHLP_HIER_KEY_ST>-OBJECT_TYPE = 1.
<PSHLP_HIER_KEY_ST>-OBJNR = 1.
<PSHLP_HIER_KEY_ST>-PSPNR = 1.
<PSHLP_HIER_KEY_ST>-PSPID = 1.
<PSHLP_HIER_KEY_ST>-POSNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PSHLP_HIER_KEY_ST-POSID, sy-vline,
  WA_PSHLP_HIER_KEY_ST-PSPEL, sy-vline,
  WA_PSHLP_HIER_KEY_ST-AUFNR, sy-vline,
  WA_PSHLP_HIER_KEY_ST-AUFPL, sy-vline,
  WA_PSHLP_HIER_KEY_ST-APLZL, sy-vline,
  WA_PSHLP_HIER_KEY_ST-AUFNT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PSHLP_HIER_KEY_ST 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_PSHLP_HIER_KEY_ST 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_PSHLP_HIER_KEY_ST INTO WA_PSHLP_HIER_KEY_ST.


*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 KONPD, internal->external for field PSPNR
CALL FUNCTION 'CONVERSION_EXIT_KONPD_OUTPUT'
  EXPORTING
    input =                      WA_PSHLP_HIER_KEY_ST-PSPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSHLP_HIER_KEY_ST-PSPNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSN, internal->external for field PSPID
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_PSHLP_HIER_KEY_ST-PSPID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSHLP_HIER_KEY_ST-PSPID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field POSNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_PSHLP_HIER_KEY_ST-POSNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSHLP_HIER_KEY_ST-POSNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSN, internal->external for field POSID
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_PSHLP_HIER_KEY_ST-POSID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSHLP_HIER_KEY_ST-POSID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field PSPEL
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_PSHLP_HIER_KEY_ST-PSPEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSHLP_HIER_KEY_ST-PSPEL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PSHLP_HIER_KEY_ST-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSHLP_HIER_KEY_ST-AUFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUFNT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PSHLP_HIER_KEY_ST-AUFNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSHLP_HIER_KEY_ST-AUFNT.
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_PSHLP_HIER_KEY_ST_STR, 
OBJECT_TYPE TYPE STRING,
OBJNR TYPE STRING,
PSPNR TYPE STRING,
PSPID TYPE STRING,
POSNR TYPE STRING,
POSID TYPE STRING,
PSPEL TYPE STRING,
AUFNR TYPE STRING,
AUFPL TYPE STRING,
APLZL TYPE STRING,
AUFNT TYPE STRING,
AUFPT TYPE STRING,
APLZT TYPE STRING,
PARENT_ID TYPE STRING,
PARENT_LEVEL TYPE STRING,
HIER_LEVEL TYPE STRING,
EXPAND_ALL TYPE STRING,
EXCLUDE_MLST TYPE STRING,
EXCLUDE_NTWK TYPE STRING,
EXCLUDE_ACTY TYPE STRING,
EXCLUDE_WBS TYPE STRING,
EXCLUDE_PMCS TYPE STRING,
FILTER TYPE STRING,
EXCLUDE_BUFFER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PSHLP_HIER_KEY_ST_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_PSHLP_HIER_KEY_ST_STR-OBJECT_TYPE sy-vline 
WA_PSHLP_HIER_KEY_ST_STR-OBJNR sy-vline 
WA_PSHLP_HIER_KEY_ST_STR-PSPNR sy-vline 
WA_PSHLP_HIER_KEY_ST_STR-PSPID sy-vline 
WA_PSHLP_HIER_KEY_ST_STR-POSNR sy-vline 
WA_PSHLP_HIER_KEY_ST_STR-POSID sy-vline 
WA_PSHLP_HIER_KEY_ST_STR-PSPEL sy-vline 
WA_PSHLP_HIER_KEY_ST_STR-AUFNR sy-vline 
WA_PSHLP_HIER_KEY_ST_STR-AUFPL sy-vline 
WA_PSHLP_HIER_KEY_ST_STR-APLZL sy-vline 
WA_PSHLP_HIER_KEY_ST_STR-AUFNT sy-vline 
WA_PSHLP_HIER_KEY_ST_STR-AUFPT sy-vline 
WA_PSHLP_HIER_KEY_ST_STR-APLZT sy-vline 
WA_PSHLP_HIER_KEY_ST_STR-PARENT_ID sy-vline 
WA_PSHLP_HIER_KEY_ST_STR-PARENT_LEVEL sy-vline 
WA_PSHLP_HIER_KEY_ST_STR-HIER_LEVEL sy-vline 
WA_PSHLP_HIER_KEY_ST_STR-EXPAND_ALL sy-vline 
WA_PSHLP_HIER_KEY_ST_STR-EXCLUDE_MLST sy-vline 
WA_PSHLP_HIER_KEY_ST_STR-EXCLUDE_NTWK sy-vline 
WA_PSHLP_HIER_KEY_ST_STR-EXCLUDE_ACTY sy-vline 
WA_PSHLP_HIER_KEY_ST_STR-EXCLUDE_WBS sy-vline 
WA_PSHLP_HIER_KEY_ST_STR-EXCLUDE_PMCS sy-vline 
WA_PSHLP_HIER_KEY_ST_STR-FILTER sy-vline 
WA_PSHLP_HIER_KEY_ST_STR-EXCLUDE_BUFFER sy-vline      INTO ld_text SEPARATED BY SPACE.

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