ABAP Select data from SAP table CRFDYREQ into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CRFDYREQ
*  INTO TABLE @DATA(IT_CRFDYREQ2).
*--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_CRFDYREQ INDEX 1 INTO DATA(WA_CRFDYREQ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CRFDYREQ>-MANDT = 1.
<CRFDYREQ>-RFDYREQUIREMENTUUID = 1.
<CRFDYREQ>-RFDYMATERIALUUID = 1.
<CRFDYREQ>-RFDYWORKLISTUUID = 1.
<CRFDYREQ>-ATPRELEVANTDOCUMENTCATEGORY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CRFDYREQ-ATPRELEVANTDOCUMENT, sy-vline,
  WA_CRFDYREQ-ATPRELEVANTDOCUMENTITEM, sy-vline,
  WA_CRFDYREQ-ATPRELEVANTDOCSCHEDULELINE, sy-vline,
  WA_CRFDYREQ-SUPPLYINGSTORAGELOCATION, sy-vline,
  WA_CRFDYREQ-BATCH, sy-vline,
  WA_CRFDYREQ-REQDPRODAVAILABILITYUTCDATETME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CRFDYREQ 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_CRFDYREQ 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_CRFDYREQ INTO WA_CRFDYREQ.


*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 BASEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CRFDYREQ-BASEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRFDYREQ-BASEUNIT.
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_CRFDYREQ_STR, 
MANDT TYPE STRING,
RFDYREQUIREMENTUUID TYPE STRING,
RFDYMATERIALUUID TYPE STRING,
RFDYWORKLISTUUID TYPE STRING,
ATPRELEVANTDOCUMENTCATEGORY TYPE STRING,
ATPRELEVANTDOCUMENT TYPE STRING,
ATPRELEVANTDOCUMENTITEM TYPE STRING,
ATPRELEVANTDOCSCHEDULELINE TYPE STRING,
SUPPLYINGSTORAGELOCATION TYPE STRING,
BATCH TYPE STRING,
REQDPRODAVAILABILITYUTCDATETME TYPE STRING,
REQDPRODAVAILABILITYTIMEZONE TYPE STRING,
REQDAVAILYTMZNUTCOFFSETINSECS TYPE STRING,
ORDEREDQUANTITYINBASEUNIT TYPE STRING,
REQUESTEDQUANTITYINBASEUNIT TYPE STRING,
BASEUNIT TYPE STRING,
REQUESTEDLOADINGUTCDATETIME TYPE STRING,
REQUESTEDLOADINGTIMEZONE TYPE STRING,
REQDLOADGTMZNUTCOFFSETINSECS TYPE STRING,
REQUESTEDGOODSISSUEUTCDATETIME TYPE STRING,
REQUESTEDGOODSISSUETIMEZONE TYPE STRING,
REQDGDSISSTMZNUTCOFFSETINSECS TYPE STRING,
REQUESTEDDELIVERYUTCDATETIME TYPE STRING,
REQUESTEDDELIVERYTIMEZONE TYPE STRING,
REQDDELIVTMZNUTCOFFSETINSECS TYPE STRING,
ISPROTECTED TYPE STRING,
ISPOSTPONED TYPE STRING,
POSTPONEMENTCATEGORY TYPE STRING,
ISPROCESSABLE TYPE STRING,
SDDOCUMENTCATEGORY TYPE STRING,
RECIPIENT TYPE STRING,
IDENTIFIABLERECIPIENT TYPE STRING,
RECIPIENTTEXT TYPE STRING,
ATPRLVTDOCUMENTTYPEININTFRMT TYPE STRING,
ATPRELEVANTDOCUMENTTYPE TYPE STRING,
ATPRELEVANTDOCUMENTTYPENAME TYPE STRING,
ATPRELEVANTDOCUMENTDATE TYPE STRING,
DELIVERYPRIORITY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CRFDYREQ_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_CRFDYREQ_STR-MANDT sy-vline 
WA_CRFDYREQ_STR-RFDYREQUIREMENTUUID sy-vline 
WA_CRFDYREQ_STR-RFDYMATERIALUUID sy-vline 
WA_CRFDYREQ_STR-RFDYWORKLISTUUID sy-vline 
WA_CRFDYREQ_STR-ATPRELEVANTDOCUMENTCATEGORY sy-vline 
WA_CRFDYREQ_STR-ATPRELEVANTDOCUMENT sy-vline 
WA_CRFDYREQ_STR-ATPRELEVANTDOCUMENTITEM sy-vline 
WA_CRFDYREQ_STR-ATPRELEVANTDOCSCHEDULELINE sy-vline 
WA_CRFDYREQ_STR-SUPPLYINGSTORAGELOCATION sy-vline 
WA_CRFDYREQ_STR-BATCH sy-vline 
WA_CRFDYREQ_STR-REQDPRODAVAILABILITYUTCDATETME sy-vline 
WA_CRFDYREQ_STR-REQDPRODAVAILABILITYTIMEZONE sy-vline 
WA_CRFDYREQ_STR-REQDAVAILYTMZNUTCOFFSETINSECS sy-vline 
WA_CRFDYREQ_STR-ORDEREDQUANTITYINBASEUNIT sy-vline 
WA_CRFDYREQ_STR-REQUESTEDQUANTITYINBASEUNIT sy-vline 
WA_CRFDYREQ_STR-BASEUNIT sy-vline 
WA_CRFDYREQ_STR-REQUESTEDLOADINGUTCDATETIME sy-vline 
WA_CRFDYREQ_STR-REQUESTEDLOADINGTIMEZONE sy-vline 
WA_CRFDYREQ_STR-REQDLOADGTMZNUTCOFFSETINSECS sy-vline 
WA_CRFDYREQ_STR-REQUESTEDGOODSISSUEUTCDATETIME sy-vline 
WA_CRFDYREQ_STR-REQUESTEDGOODSISSUETIMEZONE sy-vline 
WA_CRFDYREQ_STR-REQDGDSISSTMZNUTCOFFSETINSECS sy-vline 
WA_CRFDYREQ_STR-REQUESTEDDELIVERYUTCDATETIME sy-vline 
WA_CRFDYREQ_STR-REQUESTEDDELIVERYTIMEZONE sy-vline 
WA_CRFDYREQ_STR-REQDDELIVTMZNUTCOFFSETINSECS sy-vline 
WA_CRFDYREQ_STR-ISPROTECTED sy-vline 
WA_CRFDYREQ_STR-ISPOSTPONED sy-vline 
WA_CRFDYREQ_STR-POSTPONEMENTCATEGORY sy-vline 
WA_CRFDYREQ_STR-ISPROCESSABLE sy-vline 
WA_CRFDYREQ_STR-SDDOCUMENTCATEGORY sy-vline 
WA_CRFDYREQ_STR-RECIPIENT sy-vline 
WA_CRFDYREQ_STR-IDENTIFIABLERECIPIENT sy-vline 
WA_CRFDYREQ_STR-RECIPIENTTEXT sy-vline 
WA_CRFDYREQ_STR-ATPRLVTDOCUMENTTYPEININTFRMT sy-vline 
WA_CRFDYREQ_STR-ATPRELEVANTDOCUMENTTYPE sy-vline 
WA_CRFDYREQ_STR-ATPRELEVANTDOCUMENTTYPENAME sy-vline 
WA_CRFDYREQ_STR-ATPRELEVANTDOCUMENTDATE sy-vline 
WA_CRFDYREQ_STR-DELIVERYPRIORITY sy-vline      INTO ld_text SEPARATED BY SPACE.

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