ABAP Select data from SAP table ATP_R4D_MATERIALREQUIREMENT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ATP_R4D_MATERIALREQUIREMENT 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_R4D_MATERIALREQUIREMENT. 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_R4D_MATERIALREQUIREMENT 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_R4D_MATERIALREQUIREMENT TYPE STANDARD TABLE OF ATP_R4D_MATERIALREQUIREMENT,
      WA_ATP_R4D_MATERIALREQUIREMENT TYPE ATP_R4D_MATERIALREQUIREMENT,
      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_R4D_MATERIALREQUIREMENT> TYPE ATP_R4D_MATERIALREQUIREMENT.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ATP_R4D_MATERIALREQUIREMENT.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ATP_R4D_MATERIALREQUIREMENT
  INTO TABLE IT_ATP_R4D_MATERIALREQUIREMENT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ATP_R4D_MATERIALREQUIREMENT
*  INTO TABLE @DATA(IT_ATP_R4D_MATERIALREQUIREMENT2).
*--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_R4D_MATERIALREQUIREMENT INDEX 1 INTO DATA(WA_ATP_R4D_MATERIALREQUIREMENT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ATP_R4D_MATERIALREQUIREMENT ASSIGNING <ATP_R4D_MATERIALREQUIREMENT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ATP_R4D_MATERIALREQUIREMENT>-MATERIAL = 1.
<ATP_R4D_MATERIALREQUIREMENT>-KEY = 1.
<ATP_R4D_MATERIALREQUIREMENT>-PARENT_KEY = 1.
<ATP_R4D_MATERIALREQUIREMENT>-ROOT_KEY = 1.
<ATP_R4D_MATERIALREQUIREMENT>-MATERIAL = 1.

ENDLOOP.

LOOP AT IT_ATP_R4D_MATERIALREQUIREMENT INTO WA_ATP_R4D_MATERIALREQUIREMENT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ATP_R4D_MATERIALREQUIREMENT-SUPPLYINGPLANT, sy-vline,
  WA_ATP_R4D_MATERIALREQUIREMENT-PROCESSINGSTATUS, sy-vline,
  WA_ATP_R4D_MATERIALREQUIREMENT-CONFIRMEDQUANTITYINBASEUNIT, sy-vline,
  WA_ATP_R4D_MATERIALREQUIREMENT-REQUESTEDQUANTITYINBASEUNIT, sy-vline,
  WA_ATP_R4D_MATERIALREQUIREMENT-AVAILABLEQUANTITYINBASEUNIT, sy-vline,
  WA_ATP_R4D_MATERIALREQUIREMENT-UNCONSIDEREDQUANTITYINBASEUNIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ATP_R4D_MATERIALREQUIREMENT 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_R4D_MATERIALREQUIREMENT 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_R4D_MATERIALREQUIREMENT INTO WA_ATP_R4D_MATERIALREQUIREMENT.


*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_ATP_R4D_MATERIALREQUIREMENT-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ATP_R4D_MATERIALREQUIREMENT-MATERIAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field BASEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ATP_R4D_MATERIALREQUIREMENT-BASEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ATP_R4D_MATERIALREQUIREMENT-BASEUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field BASEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ATP_R4D_MATERIALREQUIREMENT-BASEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ATP_R4D_MATERIALREQUIREMENT-BASEUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field BASEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ATP_R4D_MATERIALREQUIREMENT-BASEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ATP_R4D_MATERIALREQUIREMENT-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_R4D_MATERIALREQUIREMENT_STR, 
MATERIAL TYPE STRING,
KEY TYPE STRING,
PARENT_KEY TYPE STRING,
ROOT_KEY TYPE STRING,
MATERIAL TYPE STRING,
SUPPLYINGPLANT TYPE STRING,
PROCESSINGSTATUS TYPE STRING,
CONFIRMEDQUANTITYINBASEUNIT TYPE STRING,
REQUESTEDQUANTITYINBASEUNIT TYPE STRING,
AVAILABLEQUANTITYINBASEUNIT TYPE STRING,
UNCONSIDEREDQUANTITYINBASEUNIT TYPE STRING,
BASEUNIT TYPE STRING,
NUMBEROFRQMTSWITHCONFDEFICIT TYPE STRING,
REQUIREMENT TYPE STRING,
KEY TYPE STRING,
PARENT_KEY TYPE STRING,
ROOT_KEY TYPE STRING,
ATPRELEVANTDOCUMENT TYPE STRING,
ATPRELEVANTDOCUMENTITEM TYPE STRING,
ATPRELEVANTDOCSCHEDULELINE TYPE STRING,
ATPRELEVANTDOCUMENTCATEGORY TYPE STRING,
SUPPLYINGSTORAGELOCATION TYPE STRING,
BATCH TYPE STRING,
REQUESTEDQUANTITYINBASEUNIT TYPE STRING,
ORDEREDQUANTITYINBASEUNIT TYPE STRING,
BASEUNIT 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,
ISPROTECTED TYPE STRING,
ISPOSTPONED TYPE STRING,
POSTPONEMENTCATEGORY TYPE STRING,
ISPROCESSABLE TYPE STRING,
RFDYDOCUMENTSYNCSTATUS TYPE STRING,
ISRQMTWITHCONFIRMATIONDEFICIT TYPE STRING,
CONFIRMATION TYPE STRING,
KEY TYPE STRING,
PARENT_KEY TYPE STRING,
ROOT_KEY TYPE STRING,
PREVCONFIRMEDQTYINBASEUNIT TYPE STRING,
CONFIRMEDQUANTITYINBASEUNIT TYPE STRING,
BASEUNIT TYPE STRING,
CONFDPRODAVAILABILITYUTCDTETME TYPE STRING,
CONFDPRODAVAILABILITYTIMEZONE TYPE STRING,
CONFIRMEDLOADINGUTCDATETIME TYPE STRING,
CONFIRMEDLOADINGTIMEZONE TYPE STRING,
CONFIRMEDGOODSISSUEUTCDATETIME TYPE STRING,
CONFIRMEDGOODSISSUETIMEZONE TYPE STRING,
CONFIRMEDDELIVERYUTCDATETIME TYPE STRING,
CONFIRMEDDELIVERYTIMEZONE TYPE STRING,
ISWITHINSELECTIONHORIZON TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ATP_R4D_MATERIALREQUIREMENT_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_R4D_MATERIALREQUIREMENT_STR-MATERIAL sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-KEY sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-PARENT_KEY sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-ROOT_KEY sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-MATERIAL sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-SUPPLYINGPLANT sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-PROCESSINGSTATUS sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-CONFIRMEDQUANTITYINBASEUNIT sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-REQUESTEDQUANTITYINBASEUNIT sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-AVAILABLEQUANTITYINBASEUNIT sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-UNCONSIDEREDQUANTITYINBASEUNIT sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-BASEUNIT sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-NUMBEROFRQMTSWITHCONFDEFICIT sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-REQUIREMENT sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-KEY sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-PARENT_KEY sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-ROOT_KEY sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-ATPRELEVANTDOCUMENT sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-ATPRELEVANTDOCUMENTITEM sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-ATPRELEVANTDOCSCHEDULELINE sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-ATPRELEVANTDOCUMENTCATEGORY sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-SUPPLYINGSTORAGELOCATION sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-BATCH sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-REQUESTEDQUANTITYINBASEUNIT sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-ORDEREDQUANTITYINBASEUNIT sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-BASEUNIT sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-REQDPRODAVAILABILITYUTCDATETME sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-REQDPRODAVAILABILITYTIMEZONE sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-REQUESTEDLOADINGUTCDATETIME sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-REQUESTEDLOADINGTIMEZONE sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-REQUESTEDGOODSISSUEUTCDATETIME sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-REQUESTEDGOODSISSUETIMEZONE sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-REQUESTEDDELIVERYUTCDATETIME sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-REQUESTEDDELIVERYTIMEZONE sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-ISPROTECTED sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-ISPOSTPONED sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-POSTPONEMENTCATEGORY sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-ISPROCESSABLE sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-RFDYDOCUMENTSYNCSTATUS sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-ISRQMTWITHCONFIRMATIONDEFICIT sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-CONFIRMATION sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-KEY sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-PARENT_KEY sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-ROOT_KEY sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-PREVCONFIRMEDQTYINBASEUNIT sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-CONFIRMEDQUANTITYINBASEUNIT sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-BASEUNIT sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-CONFDPRODAVAILABILITYUTCDTETME sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-CONFDPRODAVAILABILITYTIMEZONE sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-CONFIRMEDLOADINGUTCDATETIME sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-CONFIRMEDLOADINGTIMEZONE sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-CONFIRMEDGOODSISSUEUTCDATETIME sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-CONFIRMEDGOODSISSUETIMEZONE sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-CONFIRMEDDELIVERYUTCDATETIME sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-CONFIRMEDDELIVERYTIMEZONE sy-vline 
WA_ATP_R4D_MATERIALREQUIREMENT_STR-ISWITHINSELECTIONHORIZON sy-vline      INTO ld_text SEPARATED BY SPACE.

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