ABAP Select data from SAP table /J7L/PACK into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /J7L/PACK 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 /J7L/PACK. 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 /J7L/PACK 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_/J7L/PACK TYPE STANDARD TABLE OF /J7L/PACK,
      WA_/J7L/PACK TYPE /J7L/PACK,
      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: </J7L/PACK> TYPE /J7L/PACK.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/J7L/PACK.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /J7L/PACK
  INTO TABLE IT_/J7L/PACK.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /J7L/PACK
*  INTO TABLE @DATA(IT_/J7L/PACK2).
*--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_/J7L/PACK INDEX 1 INTO DATA(WA_/J7L/PACK2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/J7L/PACK ASSIGNING </J7L/PACK>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</J7L/PACK>-MANDT = 1.
</J7L/PACK>-VRPNR = 1.
</J7L/PACK>-VARIANTE = 1.
</J7L/PACK>-VPTYP = 1.
</J7L/PACK>-MEINS = 1.

ENDLOOP.

LOOP AT IT_/J7L/PACK INTO WA_/J7L/PACK.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/J7L/PACK-VPARTG, sy-vline,
  WA_/J7L/PACK-VPARTS, sy-vline,
  WA_/J7L/PACK-KZVPMM, sy-vline,
  WA_/J7L/PACK-KZVPSD, sy-vline,
  WA_/J7L/PACK-VPEBENE, sy-vline,
  WA_/J7L/PACK-TRENNKZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/J7L/PACK 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_/J7L/PACK 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_/J7L/PACK INTO WA_/J7L/PACK.


*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 VRPNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_/J7L/PACK-VRPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/J7L/PACK-VRPNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/J7L/PACK-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/J7L/PACK-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MSEHI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/J7L/PACK-MSEHI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/J7L/PACK-MSEHI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field GEWEI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/J7L/PACK-GEWEI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/J7L/PACK-GEWEI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VOLEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/J7L/PACK-VOLEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/J7L/PACK-VOLEH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEABM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/J7L/PACK-MEABM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/J7L/PACK-MEABM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEABMZ
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/J7L/PACK-MEABMZ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/J7L/PACK-MEABMZ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field GEWEIZ
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/J7L/PACK-GEWEIZ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/J7L/PACK-GEWEIZ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINSZ
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/J7L/PACK-MEINSZ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/J7L/PACK-MEINSZ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MUSTERVRPNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_/J7L/PACK-MUSTERVRPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/J7L/PACK-MUSTERVRPNR.
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_/J7L/PACK_STR, 
MANDT TYPE STRING,
VRPNR TYPE STRING,
VARIANTE TYPE STRING,
VPTYP TYPE STRING,
MEINS TYPE STRING,
VPARTG TYPE STRING,
VPARTS TYPE STRING,
KZVPMM TYPE STRING,
KZVPSD TYPE STRING,
VPEBENE TYPE STRING,
TRENNKZ TYPE STRING,
VPFORMTYP TYPE STRING,
VERSCHNITT TYPE STRING,
MSEHI TYPE STRING,
GEWEI TYPE STRING,
VPGEW TYPE STRING,
VOLEH TYPE STRING,
VOLUM TYPE STRING,
MEABM TYPE STRING,
LAENG TYPE STRING,
BREIT TYPE STRING,
HOEHE TYPE STRING,
REUSE_PERIOD TYPE STRING,
REUSE_TOTAL TYPE STRING,
LAENGZ TYPE STRING,
BREITZ TYPE STRING,
HOEHEZ TYPE STRING,
MEABMZ TYPE STRING,
NTGEWZ TYPE STRING,
GEWEIZ TYPE STRING,
FMENGZ TYPE STRING,
MEINSZ TYPE STRING,
MUSTERVRPNR TYPE STRING,
DATABADM TYPE STRING,
DATBIADM TYPE STRING,
ERSDAADM TYPE STRING,
ERZETADM TYPE STRING,
ERNAMADM TYPE STRING,
LAEDAADM TYPE STRING,
AEZETADM TYPE STRING,
AENAMADM TYPE STRING,
LVORMADM TYPE STRING,
ACTIVEHEA TYPE STRING,
FRACTION_TIME_TAB TYPE STRING,
PARTNER_TIME_TAB TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/J7L/PACK_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_/J7L/PACK_STR-MANDT sy-vline 
WA_/J7L/PACK_STR-VRPNR sy-vline 
WA_/J7L/PACK_STR-VARIANTE sy-vline 
WA_/J7L/PACK_STR-VPTYP sy-vline 
WA_/J7L/PACK_STR-MEINS sy-vline 
WA_/J7L/PACK_STR-VPARTG sy-vline 
WA_/J7L/PACK_STR-VPARTS sy-vline 
WA_/J7L/PACK_STR-KZVPMM sy-vline 
WA_/J7L/PACK_STR-KZVPSD sy-vline 
WA_/J7L/PACK_STR-VPEBENE sy-vline 
WA_/J7L/PACK_STR-TRENNKZ sy-vline 
WA_/J7L/PACK_STR-VPFORMTYP sy-vline 
WA_/J7L/PACK_STR-VERSCHNITT sy-vline 
WA_/J7L/PACK_STR-MSEHI sy-vline 
WA_/J7L/PACK_STR-GEWEI sy-vline 
WA_/J7L/PACK_STR-VPGEW sy-vline 
WA_/J7L/PACK_STR-VOLEH sy-vline 
WA_/J7L/PACK_STR-VOLUM sy-vline 
WA_/J7L/PACK_STR-MEABM sy-vline 
WA_/J7L/PACK_STR-LAENG sy-vline 
WA_/J7L/PACK_STR-BREIT sy-vline 
WA_/J7L/PACK_STR-HOEHE sy-vline 
WA_/J7L/PACK_STR-REUSE_PERIOD sy-vline 
WA_/J7L/PACK_STR-REUSE_TOTAL sy-vline 
WA_/J7L/PACK_STR-LAENGZ sy-vline 
WA_/J7L/PACK_STR-BREITZ sy-vline 
WA_/J7L/PACK_STR-HOEHEZ sy-vline 
WA_/J7L/PACK_STR-MEABMZ sy-vline 
WA_/J7L/PACK_STR-NTGEWZ sy-vline 
WA_/J7L/PACK_STR-GEWEIZ sy-vline 
WA_/J7L/PACK_STR-FMENGZ sy-vline 
WA_/J7L/PACK_STR-MEINSZ sy-vline 
WA_/J7L/PACK_STR-MUSTERVRPNR sy-vline 
WA_/J7L/PACK_STR-DATABADM sy-vline 
WA_/J7L/PACK_STR-DATBIADM sy-vline 
WA_/J7L/PACK_STR-ERSDAADM sy-vline 
WA_/J7L/PACK_STR-ERZETADM sy-vline 
WA_/J7L/PACK_STR-ERNAMADM sy-vline 
WA_/J7L/PACK_STR-LAEDAADM sy-vline 
WA_/J7L/PACK_STR-AEZETADM sy-vline 
WA_/J7L/PACK_STR-AENAMADM sy-vline 
WA_/J7L/PACK_STR-LVORMADM sy-vline 
WA_/J7L/PACK_STR-ACTIVEHEA sy-vline 
WA_/J7L/PACK_STR-FRACTION_TIME_TAB sy-vline 
WA_/J7L/PACK_STR-PARTNER_TIME_TAB sy-vline      INTO ld_text SEPARATED BY SPACE.

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