ABAP Select data from SAP table ATP_SELD_RQMT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ATP_SELD_RQMT
*  INTO TABLE @DATA(IT_ATP_SELD_RQMT2).
*--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_ATP_SELD_RQMT INDEX 1 INTO DATA(WA_ATP_SELD_RQMT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ATP_SELD_RQMT>-MANDT = 1.
<ATP_SELD_RQMT>-ATPREQUIREMENTUUID = 1.
<ATP_SELD_RQMT>-ATPCHECKITERATIONUUID = 1.
<ATP_SELD_RQMT>-ATPCHECKUUID = 1.
<ATP_SELD_RQMT>-ATPCHECKVERSION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ATP_SELD_RQMT-ATPRELEVANTDOCUMENTCATEGORY, sy-vline,
  WA_ATP_SELD_RQMT-ATPRELEVANTDOCUMENT, sy-vline,
  WA_ATP_SELD_RQMT-ATPRELEVANTDOCUMENTITEM, sy-vline,
  WA_ATP_SELD_RQMT-ATPRELEVANTDOCUMENTSUBITEM, sy-vline,
  WA_ATP_SELD_RQMT-ATPRELEVANTDOCSCHEDULELINE, sy-vline,
  WA_ATP_SELD_RQMT-PRODUCT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ATP_SELD_RQMT 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_ATP_SELD_RQMT 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_ATP_SELD_RQMT INTO WA_ATP_SELD_RQMT.


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

*Conversion exit CUNIT, internal->external for field BASEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ATP_SELD_RQMT-BASEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ATP_SELD_RQMT-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_ATP_SELD_RQMT_STR, 
MANDT TYPE STRING,
ATPREQUIREMENTUUID TYPE STRING,
ATPCHECKITERATIONUUID TYPE STRING,
ATPCHECKUUID TYPE STRING,
ATPCHECKVERSION TYPE STRING,
ATPRELEVANTDOCUMENTCATEGORY TYPE STRING,
ATPRELEVANTDOCUMENT TYPE STRING,
ATPRELEVANTDOCUMENTITEM TYPE STRING,
ATPRELEVANTDOCUMENTSUBITEM TYPE STRING,
ATPRELEVANTDOCSCHEDULELINE TYPE STRING,
PRODUCT TYPE STRING,
SUPPLYINGPLANT TYPE STRING,
SUPPLYINGSTORAGELOCATION TYPE STRING,
BATCH TYPE STRING,
INVENTORYSPECIALSTOCKTYPE TYPE STRING,
REQUESTEDQUANTITYINBASEUNIT TYPE STRING,
BASEUNIT TYPE STRING,
BASETOCOMMONBASEQTYNUMERATOR TYPE STRING,
BASETOCOMMONBASEQTYDENOMINATOR TYPE STRING,
REQDPRODAVAILABILITYUTCDATETME TYPE STRING,
REQDPRODAVAILABILITYTIMEZONE TYPE STRING,
REQUESTEDLOADINGUTCDATETIME TYPE STRING,
REQUESTEDLOADINGTIMEZONE TYPE STRING,
REQUESTEDGOODSISSUEUTCDATETIME TYPE STRING,
REQUESTEDGOODSISSUETIMEZONE TYPE STRING,
REQUESTEDDELIVERYUTCDATETIME TYPE STRING,
REQUESTEDDELIVERYTIMEZONE TYPE STRING,
MATCHINGABOPSEGMENTUUID TYPE STRING,
ASSGDABOPCONFIRMATIONSTRATEGY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ATP_SELD_RQMT_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_ATP_SELD_RQMT_STR-MANDT sy-vline 
WA_ATP_SELD_RQMT_STR-ATPREQUIREMENTUUID sy-vline 
WA_ATP_SELD_RQMT_STR-ATPCHECKITERATIONUUID sy-vline 
WA_ATP_SELD_RQMT_STR-ATPCHECKUUID sy-vline 
WA_ATP_SELD_RQMT_STR-ATPCHECKVERSION sy-vline 
WA_ATP_SELD_RQMT_STR-ATPRELEVANTDOCUMENTCATEGORY sy-vline 
WA_ATP_SELD_RQMT_STR-ATPRELEVANTDOCUMENT sy-vline 
WA_ATP_SELD_RQMT_STR-ATPRELEVANTDOCUMENTITEM sy-vline 
WA_ATP_SELD_RQMT_STR-ATPRELEVANTDOCUMENTSUBITEM sy-vline 
WA_ATP_SELD_RQMT_STR-ATPRELEVANTDOCSCHEDULELINE sy-vline 
WA_ATP_SELD_RQMT_STR-PRODUCT sy-vline 
WA_ATP_SELD_RQMT_STR-SUPPLYINGPLANT sy-vline 
WA_ATP_SELD_RQMT_STR-SUPPLYINGSTORAGELOCATION sy-vline 
WA_ATP_SELD_RQMT_STR-BATCH sy-vline 
WA_ATP_SELD_RQMT_STR-INVENTORYSPECIALSTOCKTYPE sy-vline 
WA_ATP_SELD_RQMT_STR-REQUESTEDQUANTITYINBASEUNIT sy-vline 
WA_ATP_SELD_RQMT_STR-BASEUNIT sy-vline 
WA_ATP_SELD_RQMT_STR-BASETOCOMMONBASEQTYNUMERATOR sy-vline 
WA_ATP_SELD_RQMT_STR-BASETOCOMMONBASEQTYDENOMINATOR sy-vline 
WA_ATP_SELD_RQMT_STR-REQDPRODAVAILABILITYUTCDATETME sy-vline 
WA_ATP_SELD_RQMT_STR-REQDPRODAVAILABILITYTIMEZONE sy-vline 
WA_ATP_SELD_RQMT_STR-REQUESTEDLOADINGUTCDATETIME sy-vline 
WA_ATP_SELD_RQMT_STR-REQUESTEDLOADINGTIMEZONE sy-vline 
WA_ATP_SELD_RQMT_STR-REQUESTEDGOODSISSUEUTCDATETIME sy-vline 
WA_ATP_SELD_RQMT_STR-REQUESTEDGOODSISSUETIMEZONE sy-vline 
WA_ATP_SELD_RQMT_STR-REQUESTEDDELIVERYUTCDATETIME sy-vline 
WA_ATP_SELD_RQMT_STR-REQUESTEDDELIVERYTIMEZONE sy-vline 
WA_ATP_SELD_RQMT_STR-MATCHINGABOPSEGMENTUUID sy-vline 
WA_ATP_SELD_RQMT_STR-ASSGDABOPCONFIRMATIONSTRATEGY sy-vline      INTO ld_text SEPARATED BY SPACE.

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