ABAP Select data from SAP table PCK_DATA 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 PCK_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 PCK_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 PCK_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_PCK_DATA TYPE STANDARD TABLE OF PCK_DATA,
      WA_PCK_DATA TYPE PCK_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: <PCK_DATA> TYPE PCK_DATA.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PCK_DATA
*  INTO TABLE @DATA(IT_PCK_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_PCK_DATA INDEX 1 INTO DATA(WA_PCK_DATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PCK_DATA>-ITEMTYPE = 1.
<PCK_DATA>-MATNR = 1.
<PCK_DATA>-MAKTX = 1.
<PCK_DATA>-CHARG = 1.
<PCK_DATA>-XCHAR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PCK_DATA-XCHPF, sy-vline,
  WA_PCK_DATA-BESTQ, sy-vline,
  WA_PCK_DATA-QPLOS, sy-vline,
  WA_PCK_DATA-SOBKZ, sy-vline,
  WA_PCK_DATA-SONUM, sy-vline,
  WA_PCK_DATA-REVLEV, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PCK_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_PCK_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_PCK_DATA INTO WA_PCK_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.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_PCK_DATA-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCK_DATA-MATNR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit NUMCV, internal->external for field REVLEV
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_PCK_DATA-REVLEV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCK_DATA-REVLEV.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field RMATP
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_PCK_DATA-RMATP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCK_DATA-RMATP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field QUNIT_A
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PCK_DATA-QUNIT_A
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCK_DATA-QUNIT_A.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit MATN1, internal->external for field CML_PACKGOOD
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_PCK_DATA-CML_PACKGOOD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCK_DATA-CML_PACKGOOD.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PACKINST
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PCK_DATA-PACKINST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCK_DATA-PACKINST.
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_PCK_DATA_STR, 
ITEMTYPE TYPE STRING,
MATNR TYPE STRING,
MAKTX TYPE STRING,
CHARG TYPE STRING,
XCHAR TYPE STRING,
XCHPF TYPE STRING,
BESTQ TYPE STRING,
QPLOS TYPE STRING,
SOBKZ TYPE STRING,
SONUM TYPE STRING,
REVLEV TYPE STRING,
VHART TYPE STRING,
MAGRV TYPE STRING,
RMATP TYPE STRING,
VFDAT TYPE STRING,
SGT_SCAT TYPE STRING,
WRF_CHARSTC1 TYPE STRING,
WRF_CHARSTC2 TYPE STRING,
WRF_CHARSTC3 TYPE STRING,
WRF_CHARSTC1_TXT TYPE STRING,
WRF_CHARSTC2_TXT TYPE STRING,
WRF_CHARSTC3_TXT TYPE STRING,
QTY_A TYPE STRING,
TQTY_A TYPE STRING,
QUNIT_A TYPE STRING,
INDMAPACO TYPE STRING,
INDNOHU TYPE STRING,
PACKSTATU TYPE STRING,
PINSTR_ID TYPE STRING,
PINSTR_TEXT TYPE STRING,
CML_PACKGOOD TYPE STRING,
CMLQTY_A TYPE STRING,
TEXTNAME TYPE STRING,
ERROR TYPE STRING,
DOCTYPE TYPE STRING,
DOCNUM TYPE STRING,
DOCITEM TYPE STRING,
RESOBJTYPE TYPE STRING,
RESOBJ TYPE STRING,
RESOBJITEM TYPE STRING,
POSTYP TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
COMPONENT TYPE STRING,
CONTENT TYPE STRING,
PACKINST TYPE STRING,
PI_CONTENT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PCK_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_PCK_DATA_STR-ITEMTYPE sy-vline 
WA_PCK_DATA_STR-MATNR sy-vline 
WA_PCK_DATA_STR-MAKTX sy-vline 
WA_PCK_DATA_STR-CHARG sy-vline 
WA_PCK_DATA_STR-XCHAR sy-vline 
WA_PCK_DATA_STR-XCHPF sy-vline 
WA_PCK_DATA_STR-BESTQ sy-vline 
WA_PCK_DATA_STR-QPLOS sy-vline 
WA_PCK_DATA_STR-SOBKZ sy-vline 
WA_PCK_DATA_STR-SONUM sy-vline 
WA_PCK_DATA_STR-REVLEV sy-vline 
WA_PCK_DATA_STR-VHART sy-vline 
WA_PCK_DATA_STR-MAGRV sy-vline 
WA_PCK_DATA_STR-RMATP sy-vline 
WA_PCK_DATA_STR-VFDAT sy-vline 
WA_PCK_DATA_STR-SGT_SCAT sy-vline 
WA_PCK_DATA_STR-WRF_CHARSTC1 sy-vline 
WA_PCK_DATA_STR-WRF_CHARSTC2 sy-vline 
WA_PCK_DATA_STR-WRF_CHARSTC3 sy-vline 
WA_PCK_DATA_STR-WRF_CHARSTC1_TXT sy-vline 
WA_PCK_DATA_STR-WRF_CHARSTC2_TXT sy-vline 
WA_PCK_DATA_STR-WRF_CHARSTC3_TXT sy-vline 
WA_PCK_DATA_STR-QTY_A sy-vline 
WA_PCK_DATA_STR-TQTY_A sy-vline 
WA_PCK_DATA_STR-QUNIT_A sy-vline 
WA_PCK_DATA_STR-INDMAPACO sy-vline 
WA_PCK_DATA_STR-INDNOHU sy-vline 
WA_PCK_DATA_STR-PACKSTATU sy-vline 
WA_PCK_DATA_STR-PINSTR_ID sy-vline 
WA_PCK_DATA_STR-PINSTR_TEXT sy-vline 
WA_PCK_DATA_STR-CML_PACKGOOD sy-vline 
WA_PCK_DATA_STR-CMLQTY_A sy-vline 
WA_PCK_DATA_STR-TEXTNAME sy-vline 
WA_PCK_DATA_STR-ERROR sy-vline 
WA_PCK_DATA_STR-DOCTYPE sy-vline 
WA_PCK_DATA_STR-DOCNUM sy-vline 
WA_PCK_DATA_STR-DOCITEM sy-vline 
WA_PCK_DATA_STR-RESOBJTYPE sy-vline 
WA_PCK_DATA_STR-RESOBJ sy-vline 
WA_PCK_DATA_STR-RESOBJITEM sy-vline 
WA_PCK_DATA_STR-POSTYP sy-vline 
WA_PCK_DATA_STR-WERKS sy-vline 
WA_PCK_DATA_STR-LGORT sy-vline 
WA_PCK_DATA_STR-COMPONENT sy-vline 
WA_PCK_DATA_STR-CONTENT sy-vline 
WA_PCK_DATA_STR-PACKINST sy-vline 
WA_PCK_DATA_STR-PI_CONTENT sy-vline      INTO ld_text SEPARATED BY SPACE.

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