ABAP Select data from SAP table IEXTWPPLNBYPRD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IEXTWPPLNBYPRD
*  INTO TABLE @DATA(IT_IEXTWPPLNBYPRD2).
*--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_IEXTWPPLNBYPRD INDEX 1 INTO DATA(WA_IEXTWPPLNBYPRD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IEXTWPPLNBYPRD>-MANDT = 1.
<IEXTWPPLNBYPRD>-ENGAGEMENTPROJECT = 1.
<IEXTWPPLNBYPRD>-ENGAGEMENTPROJFINPLANUUID = 1.
<IEXTWPPLNBYPRD>-WORKPACKAGE = 1.
<IEXTWPPLNBYPRD>-ENGMTPROJFINPLANVERSION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IEXTWPPLNBYPRD-BILLINGCONTROLCATEGORY, sy-vline,
  WA_IEXTWPPLNBYPRD-WORKITEM, sy-vline,
  WA_IEXTWPPLNBYPRD-CURRENCY, sy-vline,
  WA_IEXTWPPLNBYPRD-ENGAGEMENTPROJECTRESOURCE, sy-vline,
  WA_IEXTWPPLNBYPRD-ENGAGEMENTPROJECTRESOURCETYPE, sy-vline,
  WA_IEXTWPPLNBYPRD-ENGMTPROJEMPLOYEEISSTAFFED, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IEXTWPPLNBYPRD 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_IEXTWPPLNBYPRD 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_IEXTWPPLNBYPRD INTO WA_IEXTWPPLNBYPRD.


*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 GJAHR, internal->external for field FISCALYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_IEXTWPPLNBYPRD-FISCALYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IEXTWPPLNBYPRD-FISCALYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UNITOFMEASURE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IEXTWPPLNBYPRD-UNITOFMEASURE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IEXTWPPLNBYPRD-UNITOFMEASURE.
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_IEXTWPPLNBYPRD_STR, 
MANDT TYPE STRING,
ENGAGEMENTPROJECT TYPE STRING,
ENGAGEMENTPROJFINPLANUUID TYPE STRING,
WORKPACKAGE TYPE STRING,
ENGMTPROJFINPLANVERSION TYPE STRING,
BILLINGCONTROLCATEGORY TYPE STRING,
WORKITEM TYPE STRING,
CURRENCY TYPE STRING,
ENGAGEMENTPROJECTRESOURCE TYPE STRING,
ENGAGEMENTPROJECTRESOURCETYPE TYPE STRING,
ENGMTPROJEMPLOYEEISSTAFFED TYPE STRING,
EMPLOYMENTINTERNALID TYPE STRING,
PLNDCOSTAMT TYPE STRING,
PLNDREVNAMT TYPE STRING,
ACTUALPLANDEVIATIONCOST TYPE STRING,
ACTUALPLANDEVIATIONEFFORT TYPE STRING,
FISCALYEAR TYPE STRING,
FISCALPERIOD TYPE STRING,
UNITOFMEASURE TYPE STRING,
PLNDEFFORTQTY TYPE STRING,
ENGAGEMENTPROJECTSERVICEORG TYPE STRING,
ENGMNTPROJPLANLINETYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IEXTWPPLNBYPRD_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_IEXTWPPLNBYPRD_STR-MANDT sy-vline 
WA_IEXTWPPLNBYPRD_STR-ENGAGEMENTPROJECT sy-vline 
WA_IEXTWPPLNBYPRD_STR-ENGAGEMENTPROJFINPLANUUID sy-vline 
WA_IEXTWPPLNBYPRD_STR-WORKPACKAGE sy-vline 
WA_IEXTWPPLNBYPRD_STR-ENGMTPROJFINPLANVERSION sy-vline 
WA_IEXTWPPLNBYPRD_STR-BILLINGCONTROLCATEGORY sy-vline 
WA_IEXTWPPLNBYPRD_STR-WORKITEM sy-vline 
WA_IEXTWPPLNBYPRD_STR-CURRENCY sy-vline 
WA_IEXTWPPLNBYPRD_STR-ENGAGEMENTPROJECTRESOURCE sy-vline 
WA_IEXTWPPLNBYPRD_STR-ENGAGEMENTPROJECTRESOURCETYPE sy-vline 
WA_IEXTWPPLNBYPRD_STR-ENGMTPROJEMPLOYEEISSTAFFED sy-vline 
WA_IEXTWPPLNBYPRD_STR-EMPLOYMENTINTERNALID sy-vline 
WA_IEXTWPPLNBYPRD_STR-PLNDCOSTAMT sy-vline 
WA_IEXTWPPLNBYPRD_STR-PLNDREVNAMT sy-vline 
WA_IEXTWPPLNBYPRD_STR-ACTUALPLANDEVIATIONCOST sy-vline 
WA_IEXTWPPLNBYPRD_STR-ACTUALPLANDEVIATIONEFFORT sy-vline 
WA_IEXTWPPLNBYPRD_STR-FISCALYEAR sy-vline 
WA_IEXTWPPLNBYPRD_STR-FISCALPERIOD sy-vline 
WA_IEXTWPPLNBYPRD_STR-UNITOFMEASURE sy-vline 
WA_IEXTWPPLNBYPRD_STR-PLNDEFFORTQTY sy-vline 
WA_IEXTWPPLNBYPRD_STR-ENGAGEMENTPROJECTSERVICEORG sy-vline 
WA_IEXTWPPLNBYPRD_STR-ENGMNTPROJPLANLINETYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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