ABAP Select data from SAP table CRMD_PRODUCT_I into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CRMD_PRODUCT_I
*  INTO TABLE @DATA(IT_CRMD_PRODUCT_I2).
*--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_CRMD_PRODUCT_I INDEX 1 INTO DATA(WA_CRMD_PRODUCT_I2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CRMD_PRODUCT_I>-CLIENT = 1.
<CRMD_PRODUCT_I>-GUID = 1.
<CRMD_PRODUCT_I>-GROSS_WEIGHT = 1.
<CRMD_PRODUCT_I>-NET_WEIGHT = 1.
<CRMD_PRODUCT_I>-WEIGHT_UNIT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CRMD_PRODUCT_I-VOLUME, sy-vline,
  WA_CRMD_PRODUCT_I-VOLUME_UNIT, sy-vline,
  WA_CRMD_PRODUCT_I-PRICE_PRODUCT, sy-vline,
  WA_CRMD_PRODUCT_I-PROCESS_QTY_NUM, sy-vline,
  WA_CRMD_PRODUCT_I-PROCESS_QTY_DEN, sy-vline,
  WA_CRMD_PRODUCT_I-EXPONENT10, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CRMD_PRODUCT_I 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_CRMD_PRODUCT_I 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_CRMD_PRODUCT_I INTO WA_CRMD_PRODUCT_I.


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

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

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

*Conversion exit CUNIT, internal->external for field BASE_QTY_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CRMD_PRODUCT_I-BASE_QTY_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMD_PRODUCT_I-BASE_QTY_UNIT.
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_CRMD_PRODUCT_I_STR, 
CLIENT TYPE STRING,
GUID TYPE STRING,
GROSS_WEIGHT TYPE STRING,
NET_WEIGHT TYPE STRING,
WEIGHT_UNIT TYPE STRING,
VOLUME TYPE STRING,
VOLUME_UNIT TYPE STRING,
PRICE_PRODUCT TYPE STRING,
PROCESS_QTY_NUM TYPE STRING,
PROCESS_QTY_DEN TYPE STRING,
EXPONENT10 TYPE STRING,
PROCESS_QTY_UNIT TYPE STRING,
COMM_GROUP TYPE STRING,
REBATE_GROUP TYPE STRING,
CASH_DISC TYPE STRING,
PROD_PR_GROUP TYPE STRING,
PRC_GROUP1 TYPE STRING,
PRC_GROUP2 TYPE STRING,
PRC_GROUP3 TYPE STRING,
PRC_GROUP4 TYPE STRING,
PRC_GROUP5 TYPE STRING,
PRODUCT_SEGMENT TYPE STRING,
PROD_HIERARCHY TYPE STRING,
RESID_VALUE_ST TYPE STRING,
RESID_VALUE_GRP TYPE STRING,
BATCH_ID TYPE STRING,
INT_INSPECTION TYPE STRING,
RET_PROC_IND TYPE STRING,
PLANT TYPE STRING,
PRODUCT_I_DUMMY TYPE STRING,
BASE_QTY_UNIT TYPE STRING,
INT_OBJ_NO_BT TYPE STRING,
EXCH_BUSINESS TYPE STRING,
IS_GIFTCARD TYPE STRING,
GC_SEND_TYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CRMD_PRODUCT_I_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_CRMD_PRODUCT_I_STR-CLIENT sy-vline 
WA_CRMD_PRODUCT_I_STR-GUID sy-vline 
WA_CRMD_PRODUCT_I_STR-GROSS_WEIGHT sy-vline 
WA_CRMD_PRODUCT_I_STR-NET_WEIGHT sy-vline 
WA_CRMD_PRODUCT_I_STR-WEIGHT_UNIT sy-vline 
WA_CRMD_PRODUCT_I_STR-VOLUME sy-vline 
WA_CRMD_PRODUCT_I_STR-VOLUME_UNIT sy-vline 
WA_CRMD_PRODUCT_I_STR-PRICE_PRODUCT sy-vline 
WA_CRMD_PRODUCT_I_STR-PROCESS_QTY_NUM sy-vline 
WA_CRMD_PRODUCT_I_STR-PROCESS_QTY_DEN sy-vline 
WA_CRMD_PRODUCT_I_STR-EXPONENT10 sy-vline 
WA_CRMD_PRODUCT_I_STR-PROCESS_QTY_UNIT sy-vline 
WA_CRMD_PRODUCT_I_STR-COMM_GROUP sy-vline 
WA_CRMD_PRODUCT_I_STR-REBATE_GROUP sy-vline 
WA_CRMD_PRODUCT_I_STR-CASH_DISC sy-vline 
WA_CRMD_PRODUCT_I_STR-PROD_PR_GROUP sy-vline 
WA_CRMD_PRODUCT_I_STR-PRC_GROUP1 sy-vline 
WA_CRMD_PRODUCT_I_STR-PRC_GROUP2 sy-vline 
WA_CRMD_PRODUCT_I_STR-PRC_GROUP3 sy-vline 
WA_CRMD_PRODUCT_I_STR-PRC_GROUP4 sy-vline 
WA_CRMD_PRODUCT_I_STR-PRC_GROUP5 sy-vline 
WA_CRMD_PRODUCT_I_STR-PRODUCT_SEGMENT sy-vline 
WA_CRMD_PRODUCT_I_STR-PROD_HIERARCHY sy-vline 
WA_CRMD_PRODUCT_I_STR-RESID_VALUE_ST sy-vline 
WA_CRMD_PRODUCT_I_STR-RESID_VALUE_GRP sy-vline 
WA_CRMD_PRODUCT_I_STR-BATCH_ID sy-vline 
WA_CRMD_PRODUCT_I_STR-INT_INSPECTION sy-vline 
WA_CRMD_PRODUCT_I_STR-RET_PROC_IND sy-vline 
WA_CRMD_PRODUCT_I_STR-PLANT sy-vline 
WA_CRMD_PRODUCT_I_STR-PRODUCT_I_DUMMY sy-vline 
WA_CRMD_PRODUCT_I_STR-BASE_QTY_UNIT sy-vline 
WA_CRMD_PRODUCT_I_STR-INT_OBJ_NO_BT sy-vline 
WA_CRMD_PRODUCT_I_STR-EXCH_BUSINESS sy-vline 
WA_CRMD_PRODUCT_I_STR-IS_GIFTCARD sy-vline 
WA_CRMD_PRODUCT_I_STR-GC_SEND_TYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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