ABAP Select data from SAP table UPWB_YS_APPL_DESCR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM UPWB_YS_APPL_DESCR
*  INTO TABLE @DATA(IT_UPWB_YS_APPL_DESCR2).
*--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_UPWB_YS_APPL_DESCR INDEX 1 INTO DATA(WA_UPWB_YS_APPL_DESCR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<UPWB_YS_APPL_DESCR>-PLANAPP = 1.
<UPWB_YS_APPL_DESCR>-APPLCLAS = 1.
<UPWB_YS_APPL_DESCR>-AUTHOR = 1.
<UPWB_YS_APPL_DESCR>-CREATEDON = 1.
<UPWB_YS_APPL_DESCR>-CHANGEDBY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_UPWB_YS_APPL_DESCR-CHANGEDON, sy-vline,
  WA_UPWB_YS_APPL_DESCR-DEVCLASS, sy-vline,
  WA_UPWB_YS_APPL_DESCR-ORIGLANG, sy-vline,
  WA_UPWB_YS_APPL_DESCR-MODIFLANG, sy-vline,
  WA_UPWB_YS_APPL_DESCR-LENGTH, sy-vline,
  WA_UPWB_YS_APPL_DESCR-RUNTIMELENGTH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_UPWB_YS_APPL_DESCR 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_UPWB_YS_APPL_DESCR 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_UPWB_YS_APPL_DESCR INTO WA_UPWB_YS_APPL_DESCR.


*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 ISOLA, internal->external for field ORIGLANG
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_UPWB_YS_APPL_DESCR-ORIGLANG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_UPWB_YS_APPL_DESCR-ORIGLANG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field MODIFLANG
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_UPWB_YS_APPL_DESCR-MODIFLANG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_UPWB_YS_APPL_DESCR-MODIFLANG.
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_UPWB_YS_APPL_DESCR_STR, 
PLANAPP TYPE STRING,
APPLCLAS TYPE STRING,
AUTHOR TYPE STRING,
CREATEDON TYPE STRING,
CHANGEDBY TYPE STRING,
CHANGEDON TYPE STRING,
DEVCLASS TYPE STRING,
ORIGLANG TYPE STRING,
MODIFLANG TYPE STRING,
LENGTH TYPE STRING,
RUNTIMELENGTH TYPE STRING,
MEMORY_LENGTH TYPE STRING,END OF T_EKKO_STR.
DATA: WA_UPWB_YS_APPL_DESCR_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_UPWB_YS_APPL_DESCR_STR-PLANAPP sy-vline 
WA_UPWB_YS_APPL_DESCR_STR-APPLCLAS sy-vline 
WA_UPWB_YS_APPL_DESCR_STR-AUTHOR sy-vline 
WA_UPWB_YS_APPL_DESCR_STR-CREATEDON sy-vline 
WA_UPWB_YS_APPL_DESCR_STR-CHANGEDBY sy-vline 
WA_UPWB_YS_APPL_DESCR_STR-CHANGEDON sy-vline 
WA_UPWB_YS_APPL_DESCR_STR-DEVCLASS sy-vline 
WA_UPWB_YS_APPL_DESCR_STR-ORIGLANG sy-vline 
WA_UPWB_YS_APPL_DESCR_STR-MODIFLANG sy-vline 
WA_UPWB_YS_APPL_DESCR_STR-LENGTH sy-vline 
WA_UPWB_YS_APPL_DESCR_STR-RUNTIMELENGTH sy-vline 
WA_UPWB_YS_APPL_DESCR_STR-MEMORY_LENGTH sy-vline      INTO ld_text SEPARATED BY SPACE.

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