ABAP Select data from SAP table CCRVMLPRDQ into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CCRVMLPRDQ
*  INTO TABLE @DATA(IT_CCRVMLPRDQ2).
*--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_CCRVMLPRDQ INDEX 1 INTO DATA(WA_CCRVMLPRDQ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CCRVMLPRDQ>-MANDT = 1.
<CCRVMLPRDQ>-CHMLCMPLNCINFONAVGNLINK = 1.
<CCRVMLPRDQ>-CHMLCOMPOSITIONTYPE = 1.
<CCRVMLPRDQ>-PRODUCT = 1.
<CCRVMLPRDQ>-CMPLRQVERSSUBSTLISTCNCTNTDNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CCRVMLPRDQ-SUBSTANCEUUID, sy-vline,
  WA_CCRVMLPRDQ-SUBSTANCEVARASSGMTUUID, sy-vline,
  WA_CCRVMLPRDQ-SUBSTANCELISTITMUUID, sy-vline,
  WA_CCRVMLPRDQ-COUNTRY, sy-vline,
  WA_CCRVMLPRDQ-LISTEDSUBSTANCE, sy-vline,
  WA_CCRVMLPRDQ-CHMLCOMPOSITIONTYPENAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CCRVMLPRDQ 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_CCRVMLPRDQ 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_CCRVMLPRDQ INTO WA_CCRVMLPRDQ.


*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_CCRVMLPRDQ-PRODUCT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CCRVMLPRDQ-PRODUCT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LISTEDSUBSTANCE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CCRVMLPRDQ-LISTEDSUBSTANCE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CCRVMLPRDQ-LISTEDSUBSTANCE.
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_CCRVMLPRDQ_STR, 
MANDT TYPE STRING,
CHMLCMPLNCINFONAVGNLINK TYPE STRING,
CHMLCOMPOSITIONTYPE TYPE STRING,
PRODUCT TYPE STRING,
CMPLRQVERSSUBSTLISTCNCTNTDNAME TYPE STRING,
SUBSTANCEUUID TYPE STRING,
SUBSTANCEVARASSGMTUUID TYPE STRING,
SUBSTANCELISTITMUUID TYPE STRING,
COUNTRY TYPE STRING,
LISTEDSUBSTANCE TYPE STRING,
CHMLCOMPOSITIONTYPENAME TYPE STRING,
PRODUCTNAME TYPE STRING,
COMPANYSUBSTANCENAME TYPE STRING,
MATERIALGROUP TYPE STRING,
CHMLCMPLNCPRODNALLWD TYPE STRING,
CHMLCMPLNCPRODNALLWDNAME TYPE STRING,
NUMBEROFPRODUCTS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CCRVMLPRDQ_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_CCRVMLPRDQ_STR-MANDT sy-vline 
WA_CCRVMLPRDQ_STR-CHMLCMPLNCINFONAVGNLINK sy-vline 
WA_CCRVMLPRDQ_STR-CHMLCOMPOSITIONTYPE sy-vline 
WA_CCRVMLPRDQ_STR-PRODUCT sy-vline 
WA_CCRVMLPRDQ_STR-CMPLRQVERSSUBSTLISTCNCTNTDNAME sy-vline 
WA_CCRVMLPRDQ_STR-SUBSTANCEUUID sy-vline 
WA_CCRVMLPRDQ_STR-SUBSTANCEVARASSGMTUUID sy-vline 
WA_CCRVMLPRDQ_STR-SUBSTANCELISTITMUUID sy-vline 
WA_CCRVMLPRDQ_STR-COUNTRY sy-vline 
WA_CCRVMLPRDQ_STR-LISTEDSUBSTANCE sy-vline 
WA_CCRVMLPRDQ_STR-CHMLCOMPOSITIONTYPENAME sy-vline 
WA_CCRVMLPRDQ_STR-PRODUCTNAME sy-vline 
WA_CCRVMLPRDQ_STR-COMPANYSUBSTANCENAME sy-vline 
WA_CCRVMLPRDQ_STR-MATERIALGROUP sy-vline 
WA_CCRVMLPRDQ_STR-CHMLCMPLNCPRODNALLWD sy-vline 
WA_CCRVMLPRDQ_STR-CHMLCMPLNCPRODNALLWDNAME sy-vline 
WA_CCRVMLPRDQ_STR-NUMBEROFPRODUCTS sy-vline      INTO ld_text SEPARATED BY SPACE.

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