ABAP Select data from SAP table PROD_SUBSTN_S_MASS_PROCESS_REQ into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PROD_SUBSTN_S_MASS_PROCESS_REQ
*  INTO TABLE @DATA(IT_PROD_SUBSTN_S_MASS_PROCESS_REQ2).
*--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_PROD_SUBSTN_S_MASS_PROCESS_REQ INDEX 1 INTO DATA(WA_PROD_SUBSTN_S_MASS_PROCESS_REQ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PROD_SUBSTN_S_MASS_PROCESS_REQ>-MDSUBSTNUUID = 1.
<PROD_SUBSTN_S_MASS_PROCESS_REQ>-PRODUCT = 1.
<PROD_SUBSTN_S_MASS_PROCESS_REQ>-SUBSTITUTEPRODUCT = 1.
<PROD_SUBSTN_S_MASS_PROCESS_REQ>-PLANT = 1.
<PROD_SUBSTN_S_MASS_PROCESS_REQ>-MDSUBSTNGROUP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PROD_SUBSTN_S_MASS_PROCESS_REQ-MDSUBSTNSET, sy-vline,
  WA_PROD_SUBSTN_S_MASS_PROCESS_REQ-MDSUBSTNISEXIT, sy-vline,
  WA_PROD_SUBSTN_S_MASS_PROCESS_REQ-MDSUBSTNISLEADING, sy-vline,
  WA_PROD_SUBSTN_S_MASS_PROCESS_REQ-MDSUBSTNSEQUENCEVALUE, sy-vline,
  WA_PROD_SUBSTN_S_MASS_PROCESS_REQ-MDSUBSTNCONVERSIONNUMERATOR, sy-vline,
  WA_PROD_SUBSTN_S_MASS_PROCESS_REQ-MDSUBSTNCONVERSIONDENOMINATOR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PROD_SUBSTN_S_MASS_PROCESS_REQ 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_PROD_SUBSTN_S_MASS_PROCESS_REQ 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_PROD_SUBSTN_S_MASS_PROCESS_REQ INTO WA_PROD_SUBSTN_S_MASS_PROCESS_REQ.


*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 PRODUCT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_PROD_SUBSTN_S_MASS_PROCESS_REQ-PRODUCT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PROD_SUBSTN_S_MASS_PROCESS_REQ-PRODUCT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field SUBSTITUTEPRODUCT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_PROD_SUBSTN_S_MASS_PROCESS_REQ-SUBSTITUTEPRODUCT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PROD_SUBSTN_S_MASS_PROCESS_REQ-SUBSTITUTEPRODUCT.
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_PROD_SUBSTN_S_MASS_PROCESS_REQ_STR, 
MDSUBSTNUUID TYPE STRING,
PRODUCT TYPE STRING,
SUBSTITUTEPRODUCT TYPE STRING,
PLANT TYPE STRING,
MDSUBSTNGROUP TYPE STRING,
MDSUBSTNSET TYPE STRING,
MDSUBSTNISEXIT TYPE STRING,
MDSUBSTNISLEADING TYPE STRING,
MDSUBSTNSEQUENCEVALUE TYPE STRING,
MDSUBSTNCONVERSIONNUMERATOR TYPE STRING,
MDSUBSTNCONVERSIONDENOMINATOR TYPE STRING,
MDSUBSTNCONVERSIONPERCENT TYPE STRING,
MDSUBSTNVALIDITYSTARTDATE TYPE STRING,
MDSUBSTNVALIDITYSTARTTIME TYPE STRING,
MDSUBSTNVALIDITYENDDATE TYPE STRING,
MDSUBSTNVALIDITYENDTIME TYPE STRING,
TIMEZONEID TYPE STRING,
MDSUBSTNREASON TYPE STRING,
MDSUBSTNSTATUS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PROD_SUBSTN_S_MASS_PROCESS_REQ_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_PROD_SUBSTN_S_MASS_PROCESS_REQ_STR-MDSUBSTNUUID sy-vline 
WA_PROD_SUBSTN_S_MASS_PROCESS_REQ_STR-PRODUCT sy-vline 
WA_PROD_SUBSTN_S_MASS_PROCESS_REQ_STR-SUBSTITUTEPRODUCT sy-vline 
WA_PROD_SUBSTN_S_MASS_PROCESS_REQ_STR-PLANT sy-vline 
WA_PROD_SUBSTN_S_MASS_PROCESS_REQ_STR-MDSUBSTNGROUP sy-vline 
WA_PROD_SUBSTN_S_MASS_PROCESS_REQ_STR-MDSUBSTNSET sy-vline 
WA_PROD_SUBSTN_S_MASS_PROCESS_REQ_STR-MDSUBSTNISEXIT sy-vline 
WA_PROD_SUBSTN_S_MASS_PROCESS_REQ_STR-MDSUBSTNISLEADING sy-vline 
WA_PROD_SUBSTN_S_MASS_PROCESS_REQ_STR-MDSUBSTNSEQUENCEVALUE sy-vline 
WA_PROD_SUBSTN_S_MASS_PROCESS_REQ_STR-MDSUBSTNCONVERSIONNUMERATOR sy-vline 
WA_PROD_SUBSTN_S_MASS_PROCESS_REQ_STR-MDSUBSTNCONVERSIONDENOMINATOR sy-vline 
WA_PROD_SUBSTN_S_MASS_PROCESS_REQ_STR-MDSUBSTNCONVERSIONPERCENT sy-vline 
WA_PROD_SUBSTN_S_MASS_PROCESS_REQ_STR-MDSUBSTNVALIDITYSTARTDATE sy-vline 
WA_PROD_SUBSTN_S_MASS_PROCESS_REQ_STR-MDSUBSTNVALIDITYSTARTTIME sy-vline 
WA_PROD_SUBSTN_S_MASS_PROCESS_REQ_STR-MDSUBSTNVALIDITYENDDATE sy-vline 
WA_PROD_SUBSTN_S_MASS_PROCESS_REQ_STR-MDSUBSTNVALIDITYENDTIME sy-vline 
WA_PROD_SUBSTN_S_MASS_PROCESS_REQ_STR-TIMEZONEID sy-vline 
WA_PROD_SUBSTN_S_MASS_PROCESS_REQ_STR-MDSUBSTNREASON sy-vline 
WA_PROD_SUBSTN_S_MASS_PROCESS_REQ_STR-MDSUBSTNSTATUS sy-vline      INTO ld_text SEPARATED BY SPACE.

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