ABAP Select data from SAP table ATP_R4D_SALESREQ_MODIFIED 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_SALESREQ_MODIFIED 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_SALESREQ_MODIFIED. 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_SALESREQ_MODIFIED 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_SALESREQ_MODIFIED TYPE STANDARD TABLE OF ATP_R4D_SALESREQ_MODIFIED,
      WA_ATP_R4D_SALESREQ_MODIFIED TYPE ATP_R4D_SALESREQ_MODIFIED,
      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_SALESREQ_MODIFIED> TYPE ATP_R4D_SALESREQ_MODIFIED.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ATP_R4D_SALESREQ_MODIFIED.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ATP_R4D_SALESREQ_MODIFIED
  INTO TABLE IT_ATP_R4D_SALESREQ_MODIFIED.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ATP_R4D_SALESREQ_MODIFIED
*  INTO TABLE @DATA(IT_ATP_R4D_SALESREQ_MODIFIED2).
*--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_SALESREQ_MODIFIED INDEX 1 INTO DATA(WA_ATP_R4D_SALESREQ_MODIFIED2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ATP_R4D_SALESREQ_MODIFIED ASSIGNING <ATP_R4D_SALESREQ_MODIFIED>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ATP_R4D_SALESREQ_MODIFIED>-RFDYREQUIREMENTUUID = 1.
<ATP_R4D_SALESREQ_MODIFIED>-RFDYMATERIALUUID = 1.
<ATP_R4D_SALESREQ_MODIFIED>-SALESORDER = 1.
<ATP_R4D_SALESREQ_MODIFIED>-SALESORDERITEM = 1.
<ATP_R4D_SALESREQ_MODIFIED>-SALESORDERSCHEDULELINE = 1.

ENDLOOP.

LOOP AT IT_ATP_R4D_SALESREQ_MODIFIED INTO WA_ATP_R4D_SALESREQ_MODIFIED.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ATP_R4D_SALESREQ_MODIFIED-SUPPLYINGSTORAGELOCATION, sy-vline,
  WA_ATP_R4D_SALESREQ_MODIFIED-BATCH, sy-vline,
  WA_ATP_R4D_SALESREQ_MODIFIED-REQDPRODAVAILABILITYUTCDATETME, sy-vline,
  WA_ATP_R4D_SALESREQ_MODIFIED-ORDEREDQUANTITYINBASEUNIT, sy-vline,
  WA_ATP_R4D_SALESREQ_MODIFIED-REQUESTEDQUANTITYINBASEUNIT, sy-vline,
  WA_ATP_R4D_SALESREQ_MODIFIED-BASEUNIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ATP_R4D_SALESREQ_MODIFIED 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_SALESREQ_MODIFIED 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_SALESREQ_MODIFIED INTO WA_ATP_R4D_SALESREQ_MODIFIED.


*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 ALPHA, internal->external for field SALESORDER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ATP_R4D_SALESREQ_MODIFIED-SALESORDER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ATP_R4D_SALESREQ_MODIFIED-SALESORDER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field BASEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ATP_R4D_SALESREQ_MODIFIED-BASEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ATP_R4D_SALESREQ_MODIFIED-BASEUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SOLDTOPARTY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ATP_R4D_SALESREQ_MODIFIED-SOLDTOPARTY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ATP_R4D_SALESREQ_MODIFIED-SOLDTOPARTY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AUART, internal->external for field SALESORDERTYPE
CALL FUNCTION 'CONVERSION_EXIT_AUART_OUTPUT'
  EXPORTING
    input =                      WA_ATP_R4D_SALESREQ_MODIFIED-SALESORDERTYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ATP_R4D_SALESREQ_MODIFIED-SALESORDERTYPE.
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_SALESREQ_MODIFIED_STR, 
RFDYREQUIREMENTUUID TYPE STRING,
RFDYMATERIALUUID TYPE STRING,
SALESORDER TYPE STRING,
SALESORDERITEM TYPE STRING,
SALESORDERSCHEDULELINE TYPE STRING,
SUPPLYINGSTORAGELOCATION TYPE STRING,
BATCH TYPE STRING,
REQDPRODAVAILABILITYUTCDATETME TYPE STRING,
ORDEREDQUANTITYINBASEUNIT TYPE STRING,
REQUESTEDQUANTITYINBASEUNIT TYPE STRING,
BASEUNIT TYPE STRING,
REQUESTEDLOADINGUTCDATETIME TYPE STRING,
REQUESTEDGOODSISSUEUTCDATETIME TYPE STRING,
REQUESTEDDELIVERYUTCDATETIME TYPE STRING,
ISPROTECTED TYPE STRING,
ISPOSTPONED TYPE STRING,
POSTPONEMENTCATEGORY TYPE STRING,
ISPROCESSABLE TYPE STRING,
SOLDTOPARTY TYPE STRING,
SALESORDERTYPE TYPE STRING,
SALESORDERDATE TYPE STRING,
DELIVERYPRIORITY TYPE STRING,
RFDYREQUESTUUID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ATP_R4D_SALESREQ_MODIFIED_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_SALESREQ_MODIFIED_STR-RFDYREQUIREMENTUUID sy-vline 
WA_ATP_R4D_SALESREQ_MODIFIED_STR-RFDYMATERIALUUID sy-vline 
WA_ATP_R4D_SALESREQ_MODIFIED_STR-SALESORDER sy-vline 
WA_ATP_R4D_SALESREQ_MODIFIED_STR-SALESORDERITEM sy-vline 
WA_ATP_R4D_SALESREQ_MODIFIED_STR-SALESORDERSCHEDULELINE sy-vline 
WA_ATP_R4D_SALESREQ_MODIFIED_STR-SUPPLYINGSTORAGELOCATION sy-vline 
WA_ATP_R4D_SALESREQ_MODIFIED_STR-BATCH sy-vline 
WA_ATP_R4D_SALESREQ_MODIFIED_STR-REQDPRODAVAILABILITYUTCDATETME sy-vline 
WA_ATP_R4D_SALESREQ_MODIFIED_STR-ORDEREDQUANTITYINBASEUNIT sy-vline 
WA_ATP_R4D_SALESREQ_MODIFIED_STR-REQUESTEDQUANTITYINBASEUNIT sy-vline 
WA_ATP_R4D_SALESREQ_MODIFIED_STR-BASEUNIT sy-vline 
WA_ATP_R4D_SALESREQ_MODIFIED_STR-REQUESTEDLOADINGUTCDATETIME sy-vline 
WA_ATP_R4D_SALESREQ_MODIFIED_STR-REQUESTEDGOODSISSUEUTCDATETIME sy-vline 
WA_ATP_R4D_SALESREQ_MODIFIED_STR-REQUESTEDDELIVERYUTCDATETIME sy-vline 
WA_ATP_R4D_SALESREQ_MODIFIED_STR-ISPROTECTED sy-vline 
WA_ATP_R4D_SALESREQ_MODIFIED_STR-ISPOSTPONED sy-vline 
WA_ATP_R4D_SALESREQ_MODIFIED_STR-POSTPONEMENTCATEGORY sy-vline 
WA_ATP_R4D_SALESREQ_MODIFIED_STR-ISPROCESSABLE sy-vline 
WA_ATP_R4D_SALESREQ_MODIFIED_STR-SOLDTOPARTY sy-vline 
WA_ATP_R4D_SALESREQ_MODIFIED_STR-SALESORDERTYPE sy-vline 
WA_ATP_R4D_SALESREQ_MODIFIED_STR-SALESORDERDATE sy-vline 
WA_ATP_R4D_SALESREQ_MODIFIED_STR-DELIVERYPRIORITY sy-vline 
WA_ATP_R4D_SALESREQ_MODIFIED_STR-RFDYREQUESTUUID sy-vline      INTO ld_text SEPARATED BY SPACE.

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