ABAP Select data from SAP table ISMDCHGPROCESSWORKLISTQUERYT_D into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISMDCHGPROCESSWORKLISTQUERYT_D
*  INTO TABLE @DATA(IT_ISMDCHGPROCESSWORKLISTQUERYT_D2).
*--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_ISMDCHGPROCESSWORKLISTQUERYT_D INDEX 1 INTO DATA(WA_ISMDCHGPROCESSWORKLISTQUERYT_D2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISMDCHGPROCESSWORKLISTQUERYT_D>-MASTERDATACHANGEPROCESS = 1.
<ISMDCHGPROCESSWORKLISTQUERYT_D>-MDCHGPROCESSSRCHQUERY = 1.
<ISMDCHGPROCESSWORKLISTQUERYT_D>-MASTERDATACHGPROCESSSEARCH = 1.
<ISMDCHGPROCESSWORKLISTQUERYT_D>-MASTERDATACHGPROCESSWORKLIST = 1.
<ISMDCHGPROCESSWORKLISTQUERYT_D>-MDCHGPROCESSSRCHQUERYATTRIBUTE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISMDCHGPROCESSWORKLISTQUERYT_D-MDCHGPROCESSSRCHQUERYSIGN, sy-vline,
  WA_ISMDCHGPROCESSWORKLISTQUERYT_D-MDCHGPROCESSSRCHQUERYOPTION, sy-vline,
  WA_ISMDCHGPROCESSWORKLISTQUERYT_D-MDCHGPROCESSSRCHQUERYLOWVALUE, sy-vline,
  WA_ISMDCHGPROCESSWORKLISTQUERYT_D-MDCHGPROCESSSRCHQUERYHIGHVALUE, sy-vline,
  WA_ISMDCHGPROCESSWORKLISTQUERYT_D-MDCHGPROCESSSRCEOBJECTTYPECODE, sy-vline,
  WA_ISMDCHGPROCESSWORKLISTQUERYT_D-MDCHANGEPROCESSMODELFIELDDESC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISMDCHGPROCESSWORKLISTQUERYT_D 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_ISMDCHGPROCESSWORKLISTQUERYT_D 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_ISMDCHGPROCESSWORKLISTQUERYT_D INTO WA_ISMDCHGPROCESSWORKLISTQUERYT_D.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_ISMDCHGPROCESSWORKLISTQUERYT_D_STR, 
MASTERDATACHANGEPROCESS TYPE STRING,
MDCHGPROCESSSRCHQUERY TYPE STRING,
MASTERDATACHGPROCESSSEARCH TYPE STRING,
MASTERDATACHGPROCESSWORKLIST TYPE STRING,
MDCHGPROCESSSRCHQUERYATTRIBUTE TYPE STRING,
MDCHGPROCESSSRCHQUERYSIGN TYPE STRING,
MDCHGPROCESSSRCHQUERYOPTION TYPE STRING,
MDCHGPROCESSSRCHQUERYLOWVALUE TYPE STRING,
MDCHGPROCESSSRCHQUERYHIGHVALUE TYPE STRING,
MDCHGPROCESSSRCEOBJECTTYPECODE TYPE STRING,
MDCHANGEPROCESSMODELFIELDDESC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISMDCHGPROCESSWORKLISTQUERYT_D_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_ISMDCHGPROCESSWORKLISTQUERYT_D_STR-MASTERDATACHANGEPROCESS sy-vline 
WA_ISMDCHGPROCESSWORKLISTQUERYT_D_STR-MDCHGPROCESSSRCHQUERY sy-vline 
WA_ISMDCHGPROCESSWORKLISTQUERYT_D_STR-MASTERDATACHGPROCESSSEARCH sy-vline 
WA_ISMDCHGPROCESSWORKLISTQUERYT_D_STR-MASTERDATACHGPROCESSWORKLIST sy-vline 
WA_ISMDCHGPROCESSWORKLISTQUERYT_D_STR-MDCHGPROCESSSRCHQUERYATTRIBUTE sy-vline 
WA_ISMDCHGPROCESSWORKLISTQUERYT_D_STR-MDCHGPROCESSSRCHQUERYSIGN sy-vline 
WA_ISMDCHGPROCESSWORKLISTQUERYT_D_STR-MDCHGPROCESSSRCHQUERYOPTION sy-vline 
WA_ISMDCHGPROCESSWORKLISTQUERYT_D_STR-MDCHGPROCESSSRCHQUERYLOWVALUE sy-vline 
WA_ISMDCHGPROCESSWORKLISTQUERYT_D_STR-MDCHGPROCESSSRCHQUERYHIGHVALUE sy-vline 
WA_ISMDCHGPROCESSWORKLISTQUERYT_D_STR-MDCHGPROCESSSRCEOBJECTTYPECODE sy-vline 
WA_ISMDCHGPROCESSWORKLISTQUERYT_D_STR-MDCHANGEPROCESSMODELFIELDDESC sy-vline      INTO ld_text SEPARATED BY SPACE.

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