ABAP Select data from SAP table CPRODSTKRQMTCHRT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CPRODSTKRQMTCHRT
*  INTO TABLE @DATA(IT_CPRODSTKRQMTCHRT2).
*--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_CPRODSTKRQMTCHRT INDEX 1 INTO DATA(WA_CPRODSTKRQMTCHRT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CPRODSTKRQMTCHRT>-MANDT = 1.
<CPRODSTKRQMTCHRT>-MATERIAL = 1.
<CPRODSTKRQMTCHRT>-PLANT = 1.
<CPRODSTKRQMTCHRT>-MRPAREA = 1.
<CPRODSTKRQMTCHRT>-CALENDARDATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CPRODSTKRQMTCHRT-CURRENTGREENZONE, sy-vline,
  WA_CPRODSTKRQMTCHRT-CURRENTYELLOWZONE, sy-vline,
  WA_CPRODSTKRQMTCHRT-CURRENTREDZONE, sy-vline,
  WA_CPRODSTKRQMTCHRT-ONHANDSTOCKQUANTITY, sy-vline,
  WA_CPRODSTKRQMTCHRT-DECOUPLEDLEADTIME, sy-vline,
  WA_CPRODSTKRQMTCHRT-SPIKEHORIZONENDDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CPRODSTKRQMTCHRT 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_CPRODSTKRQMTCHRT 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_CPRODSTKRQMTCHRT INTO WA_CPRODSTKRQMTCHRT.


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

*Conversion exit CUNIT, internal->external for field BASEUNITOFMEASURE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CPRODSTKRQMTCHRT-BASEUNITOFMEASURE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CPRODSTKRQMTCHRT-BASEUNITOFMEASURE.
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_CPRODSTKRQMTCHRT_STR, 
MANDT TYPE STRING,
MATERIAL TYPE STRING,
PLANT TYPE STRING,
MRPAREA TYPE STRING,
CALENDARDATE TYPE STRING,
CURRENTGREENZONE TYPE STRING,
CURRENTYELLOWZONE TYPE STRING,
CURRENTREDZONE TYPE STRING,
ONHANDSTOCKQUANTITY TYPE STRING,
DECOUPLEDLEADTIME TYPE STRING,
SPIKEHORIZONENDDATE TYPE STRING,
BASEUNITOFMEASURE TYPE STRING,
HORIZONSTARTDATE TYPE STRING,
HORIZONENDDATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CPRODSTKRQMTCHRT_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_CPRODSTKRQMTCHRT_STR-MANDT sy-vline 
WA_CPRODSTKRQMTCHRT_STR-MATERIAL sy-vline 
WA_CPRODSTKRQMTCHRT_STR-PLANT sy-vline 
WA_CPRODSTKRQMTCHRT_STR-MRPAREA sy-vline 
WA_CPRODSTKRQMTCHRT_STR-CALENDARDATE sy-vline 
WA_CPRODSTKRQMTCHRT_STR-CURRENTGREENZONE sy-vline 
WA_CPRODSTKRQMTCHRT_STR-CURRENTYELLOWZONE sy-vline 
WA_CPRODSTKRQMTCHRT_STR-CURRENTREDZONE sy-vline 
WA_CPRODSTKRQMTCHRT_STR-ONHANDSTOCKQUANTITY sy-vline 
WA_CPRODSTKRQMTCHRT_STR-DECOUPLEDLEADTIME sy-vline 
WA_CPRODSTKRQMTCHRT_STR-SPIKEHORIZONENDDATE sy-vline 
WA_CPRODSTKRQMTCHRT_STR-BASEUNITOFMEASURE sy-vline 
WA_CPRODSTKRQMTCHRT_STR-HORIZONSTARTDATE sy-vline 
WA_CPRODSTKRQMTCHRT_STR-HORIZONENDDATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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