ABAP Select data from SAP table ESS_NEWS into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ESS_NEWS
*  INTO TABLE @DATA(IT_ESS_NEWS2).
*--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_ESS_NEWS INDEX 1 INTO DATA(WA_ESS_NEWS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ESS_NEWS>-ITEM1 = 1.
<ESS_NEWS>-ITEM2 = 1.
<ESS_NEWS>-ITEM3 = 1.
<ESS_NEWS>-ITEM4 = 1.
<ESS_NEWS>-ITEM5 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ESS_NEWS-ITEM6, sy-vline,
  WA_ESS_NEWS-ITEM7, sy-vline,
  WA_ESS_NEWS-ACTIVE, sy-vline,
  WA_ESS_NEWS-COLS, sy-vline,
  WA_ESS_NEWS-HEADLINES, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_ESS_NEWS 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_ESS_NEWS 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_ESS_NEWS INTO WA_ESS_NEWS.


*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_ESS_NEWS_STR, 
ITEM1 TYPE STRING,
ITEM2 TYPE STRING,
ITEM3 TYPE STRING,
ITEM4 TYPE STRING,
ITEM5 TYPE STRING,
ITEM6 TYPE STRING,
ITEM7 TYPE STRING,
ACTIVE TYPE STRING,
COLS TYPE STRING,
HEADLINES TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ESS_NEWS_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_ESS_NEWS_STR-ITEM1 sy-vline 
WA_ESS_NEWS_STR-ITEM2 sy-vline 
WA_ESS_NEWS_STR-ITEM3 sy-vline 
WA_ESS_NEWS_STR-ITEM4 sy-vline 
WA_ESS_NEWS_STR-ITEM5 sy-vline 
WA_ESS_NEWS_STR-ITEM6 sy-vline 
WA_ESS_NEWS_STR-ITEM7 sy-vline 
WA_ESS_NEWS_STR-ACTIVE sy-vline 
WA_ESS_NEWS_STR-COLS sy-vline 
WA_ESS_NEWS_STR-HEADLINES sy-vline      INTO ld_text SEPARATED BY SPACE.

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