ABAP Select data from SAP table ICL_NEG_S_UI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICL_NEG_S_UI
*  INTO TABLE @DATA(IT_ICL_NEG_S_UI2).
*--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_ICL_NEG_S_UI INDEX 1 INTO DATA(WA_ICL_NEG_S_UI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICL_NEG_S_UI>-INCLUDE = 1.
<ICL_NEG_S_UI>-SUBOBJECT = 1.
<ICL_NEG_S_UI>-NEGTYPE = 1.
<ICL_NEG_S_UI>-NEGDESCR = 1.
<ICL_NEG_S_UI>-NEGNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICL_NEG_S_UI-RANGEFR, sy-vline,
  WA_ICL_NEG_S_UI-RANGETO, sy-vline,
  WA_ICL_NEG_S_UI-CURRENCY, sy-vline,
  WA_ICL_NEG_S_UI-SETTLMNTAMOUNT, sy-vline,
  WA_ICL_NEG_S_UI-SETTLMNTFORM, sy-vline,
  WA_ICL_NEG_S_UI-SETTLMNTDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICL_NEG_S_UI 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_ICL_NEG_S_UI 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_ICL_NEG_S_UI INTO WA_ICL_NEG_S_UI.


*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_ICL_NEG_S_UI_STR, 
INCLUDE TYPE STRING,
SUBOBJECT TYPE STRING,
NEGTYPE TYPE STRING,
NEGDESCR TYPE STRING,
NEGNAME TYPE STRING,
RANGEFR TYPE STRING,
RANGETO TYPE STRING,
CURRENCY TYPE STRING,
SETTLMNTAMOUNT TYPE STRING,
SETTLMNTFORM TYPE STRING,
SETTLMNTDATE TYPE STRING,
SETTLMNTDESC TYPE STRING,
NEGFORM TYPE STRING,
CONTACTMODE TYPE STRING,
VPARTNER TYPE STRING,
CANCELLED TYPE STRING,
FINISHED TYPE STRING,
REOPENED TYPE STRING,
ACTDEMAND TYPE STRING,
ACTOFFER TYPE STRING,
NEGFORMN TYPE STRING,
NEGTYPEN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICL_NEG_S_UI_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_ICL_NEG_S_UI_STR-INCLUDE sy-vline 
WA_ICL_NEG_S_UI_STR-SUBOBJECT sy-vline 
WA_ICL_NEG_S_UI_STR-NEGTYPE sy-vline 
WA_ICL_NEG_S_UI_STR-NEGDESCR sy-vline 
WA_ICL_NEG_S_UI_STR-NEGNAME sy-vline 
WA_ICL_NEG_S_UI_STR-RANGEFR sy-vline 
WA_ICL_NEG_S_UI_STR-RANGETO sy-vline 
WA_ICL_NEG_S_UI_STR-CURRENCY sy-vline 
WA_ICL_NEG_S_UI_STR-SETTLMNTAMOUNT sy-vline 
WA_ICL_NEG_S_UI_STR-SETTLMNTFORM sy-vline 
WA_ICL_NEG_S_UI_STR-SETTLMNTDATE sy-vline 
WA_ICL_NEG_S_UI_STR-SETTLMNTDESC sy-vline 
WA_ICL_NEG_S_UI_STR-NEGFORM sy-vline 
WA_ICL_NEG_S_UI_STR-CONTACTMODE sy-vline 
WA_ICL_NEG_S_UI_STR-VPARTNER sy-vline 
WA_ICL_NEG_S_UI_STR-CANCELLED sy-vline 
WA_ICL_NEG_S_UI_STR-FINISHED sy-vline 
WA_ICL_NEG_S_UI_STR-REOPENED sy-vline 
WA_ICL_NEG_S_UI_STR-ACTDEMAND sy-vline 
WA_ICL_NEG_S_UI_STR-ACTOFFER sy-vline 
WA_ICL_NEG_S_UI_STR-NEGFORMN sy-vline 
WA_ICL_NEG_S_UI_STR-NEGTYPEN sy-vline      INTO ld_text SEPARATED BY SPACE.

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