ABAP Select data from SAP table PRD_ASSIGN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PRD_ASSIGN
*  INTO TABLE @DATA(IT_PRD_ASSIGN2).
*--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_PRD_ASSIGN INDEX 1 INTO DATA(WA_PRD_ASSIGN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PRD_ASSIGN>-PROD_NAME = 1.
<PRD_ASSIGN>-PROD_REL = 1.
<PRD_ASSIGN>-PRODUCT_ID = 1.
<PRD_ASSIGN>-LANGU = 1.
<PRD_ASSIGN>-CORE_CON = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PRD_ASSIGN-ENHANC, sy-vline,
  WA_PRD_ASSIGN-ENHANC_REL, sy-vline,
  WA_PRD_ASSIGN-PROD_OWNER, sy-vline,
  WA_PRD_ASSIGN-DLINE_SRC, sy-vline,
  WA_PRD_ASSIGN-DLINE_TRAN, sy-vline,
  WA_PRD_ASSIGN-SHIPMENT_D, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PRD_ASSIGN 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_PRD_ASSIGN 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_PRD_ASSIGN INTO WA_PRD_ASSIGN.


*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 ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_PRD_ASSIGN-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PRD_ASSIGN-LANGU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTLC, internal->external for field DLINE_SRC
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_PRD_ASSIGN-DLINE_SRC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PRD_ASSIGN-DLINE_SRC.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTLC, internal->external for field DLINE_TRAN
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_PRD_ASSIGN-DLINE_TRAN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PRD_ASSIGN-DLINE_TRAN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTLC, internal->external for field SHIPMENT_D
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_PRD_ASSIGN-SHIPMENT_D
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PRD_ASSIGN-SHIPMENT_D.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTLC, internal->external for field CHANGED_AT
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_PRD_ASSIGN-CHANGED_AT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PRD_ASSIGN-CHANGED_AT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTLC, internal->external for field CREATED_AT
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_PRD_ASSIGN-CREATED_AT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PRD_ASSIGN-CREATED_AT.
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_PRD_ASSIGN_STR, 
PROD_NAME TYPE STRING,
PROD_REL TYPE STRING,
PRODUCT_ID TYPE STRING,
LANGU TYPE STRING,
CORE_CON TYPE STRING,
ENHANC TYPE STRING,
ENHANC_REL TYPE STRING,
PROD_OWNER TYPE STRING,
DLINE_SRC TYPE STRING,
DLINE_TRAN TYPE STRING,
SHIPMENT_D TYPE STRING,
CHANGED_BY TYPE STRING,
CHANGED_AT TYPE STRING,
CREATED_AT TYPE STRING,
PROD_STAT TYPE STRING,
JOBCOUNT TYPE STRING,
SCHEDUL_BY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PRD_ASSIGN_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_PRD_ASSIGN_STR-PROD_NAME sy-vline 
WA_PRD_ASSIGN_STR-PROD_REL sy-vline 
WA_PRD_ASSIGN_STR-PRODUCT_ID sy-vline 
WA_PRD_ASSIGN_STR-LANGU sy-vline 
WA_PRD_ASSIGN_STR-CORE_CON sy-vline 
WA_PRD_ASSIGN_STR-ENHANC sy-vline 
WA_PRD_ASSIGN_STR-ENHANC_REL sy-vline 
WA_PRD_ASSIGN_STR-PROD_OWNER sy-vline 
WA_PRD_ASSIGN_STR-DLINE_SRC sy-vline 
WA_PRD_ASSIGN_STR-DLINE_TRAN sy-vline 
WA_PRD_ASSIGN_STR-SHIPMENT_D sy-vline 
WA_PRD_ASSIGN_STR-CHANGED_BY sy-vline 
WA_PRD_ASSIGN_STR-CHANGED_AT sy-vline 
WA_PRD_ASSIGN_STR-CREATED_AT sy-vline 
WA_PRD_ASSIGN_STR-PROD_STAT sy-vline 
WA_PRD_ASSIGN_STR-JOBCOUNT sy-vline 
WA_PRD_ASSIGN_STR-SCHEDUL_BY sy-vline      INTO ld_text SEPARATED BY SPACE.

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