ABAP Select data from SAP table EWAEL_GRID_OPTIONS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EWAEL_GRID_OPTIONS
*  INTO TABLE @DATA(IT_EWAEL_GRID_OPTIONS2).
*--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_EWAEL_GRID_OPTIONS INDEX 1 INTO DATA(WA_EWAEL_GRID_OPTIONS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EWAEL_GRID_OPTIONS>-APPL_BROWSE = 1.
<EWAEL_GRID_OPTIONS>-APPL_NAVIGATE = 1.
<EWAEL_GRID_OPTIONS>-INVISIBLEFIELDS = 1.
<EWAEL_GRID_OPTIONS>-VISIBLEFIELDS = 1.
<EWAEL_GRID_OPTIONS>-DEFAULTFIELDS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EWAEL_GRID_OPTIONS-CANEDIT, sy-vline,
  WA_EWAEL_GRID_OPTIONS-CANINSERT, sy-vline,
  WA_EWAEL_GRID_OPTIONS-CANDELETE, sy-vline,
  WA_EWAEL_GRID_OPTIONS-TOOL_EXPORT, sy-vline,
  WA_EWAEL_GRID_OPTIONS-TOOL_SUM, sy-vline,
  WA_EWAEL_GRID_OPTIONS-INCLUDE_UI_FUNCTIONS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EWAEL_GRID_OPTIONS 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_EWAEL_GRID_OPTIONS 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_EWAEL_GRID_OPTIONS INTO WA_EWAEL_GRID_OPTIONS.


*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_EWAEL_GRID_OPTIONS_STR, 
APPL_BROWSE TYPE STRING,
APPL_NAVIGATE TYPE STRING,
INVISIBLEFIELDS TYPE STRING,
VISIBLEFIELDS TYPE STRING,
DEFAULTFIELDS TYPE STRING,
CANEDIT TYPE STRING,
CANINSERT TYPE STRING,
CANDELETE TYPE STRING,
TOOL_EXPORT TYPE STRING,
TOOL_SUM TYPE STRING,
INCLUDE_UI_FUNCTIONS TYPE STRING,
SORTCRITERIA TYPE STRING,
TOOLBUTTONS TYPE STRING,
HIDETOOLBAR TYPE STRING,
HIDEHEADER TYPE STRING,
SEL_MODE TYPE STRING,
EXCLUDE_UI_FUNCTIONS TYPE STRING,
FILTERCRITERIA TYPE STRING,
STYLEFNAME TYPE STRING,
CTAB_FNAME TYPE STRING,
SELECTION_DELAY TYPE STRING,
DRAGDROP TYPE STRING,
CNTR_DDID TYPE STRING,
GRID_DDID TYPE STRING,
COL_DDID TYPE STRING,
ROW_DDID TYPE STRING,
FIELDNAME TYPE STRING,
CANDRAGDROP TYPE STRING,
DRAGTYPE TYPE STRING,
GRIDDRAGTYPE TYPE STRING,
CANDRAGTOGRID TYPE STRING,
CANCUT TYPE STRING,
CANCOPY TYPE STRING,
CANPASTE TYPE STRING,
EDITFIELDS TYPE STRING,
SELECTION_MODE TYPE STRING,
APPL_FILLDATA_CALLBACK TYPE STRING,
APPL_DATACHANGE_CALLBACK TYPE STRING,
EVENT_ON_MODIFY TYPE STRING,
TITLE TYPE STRING,
TEXT TYPE STRING,
SIZING TYPE STRING,
CANREFRESH TYPE STRING,
DELAYED_EVENT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EWAEL_GRID_OPTIONS_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_EWAEL_GRID_OPTIONS_STR-APPL_BROWSE sy-vline 
WA_EWAEL_GRID_OPTIONS_STR-APPL_NAVIGATE sy-vline 
WA_EWAEL_GRID_OPTIONS_STR-INVISIBLEFIELDS sy-vline 
WA_EWAEL_GRID_OPTIONS_STR-VISIBLEFIELDS sy-vline 
WA_EWAEL_GRID_OPTIONS_STR-DEFAULTFIELDS sy-vline 
WA_EWAEL_GRID_OPTIONS_STR-CANEDIT sy-vline 
WA_EWAEL_GRID_OPTIONS_STR-CANINSERT sy-vline 
WA_EWAEL_GRID_OPTIONS_STR-CANDELETE sy-vline 
WA_EWAEL_GRID_OPTIONS_STR-TOOL_EXPORT sy-vline 
WA_EWAEL_GRID_OPTIONS_STR-TOOL_SUM sy-vline 
WA_EWAEL_GRID_OPTIONS_STR-INCLUDE_UI_FUNCTIONS sy-vline 
WA_EWAEL_GRID_OPTIONS_STR-SORTCRITERIA sy-vline 
WA_EWAEL_GRID_OPTIONS_STR-TOOLBUTTONS sy-vline 
WA_EWAEL_GRID_OPTIONS_STR-HIDETOOLBAR sy-vline 
WA_EWAEL_GRID_OPTIONS_STR-HIDEHEADER sy-vline 
WA_EWAEL_GRID_OPTIONS_STR-SEL_MODE sy-vline 
WA_EWAEL_GRID_OPTIONS_STR-EXCLUDE_UI_FUNCTIONS sy-vline 
WA_EWAEL_GRID_OPTIONS_STR-FILTERCRITERIA sy-vline 
WA_EWAEL_GRID_OPTIONS_STR-STYLEFNAME sy-vline 
WA_EWAEL_GRID_OPTIONS_STR-CTAB_FNAME sy-vline 
WA_EWAEL_GRID_OPTIONS_STR-SELECTION_DELAY sy-vline 
WA_EWAEL_GRID_OPTIONS_STR-DRAGDROP sy-vline 
WA_EWAEL_GRID_OPTIONS_STR-CNTR_DDID sy-vline 
WA_EWAEL_GRID_OPTIONS_STR-GRID_DDID sy-vline 
WA_EWAEL_GRID_OPTIONS_STR-COL_DDID sy-vline 
WA_EWAEL_GRID_OPTIONS_STR-ROW_DDID sy-vline 
WA_EWAEL_GRID_OPTIONS_STR-FIELDNAME sy-vline 
WA_EWAEL_GRID_OPTIONS_STR-CANDRAGDROP sy-vline 
WA_EWAEL_GRID_OPTIONS_STR-DRAGTYPE sy-vline 
WA_EWAEL_GRID_OPTIONS_STR-GRIDDRAGTYPE sy-vline 
WA_EWAEL_GRID_OPTIONS_STR-CANDRAGTOGRID sy-vline 
WA_EWAEL_GRID_OPTIONS_STR-CANCUT sy-vline 
WA_EWAEL_GRID_OPTIONS_STR-CANCOPY sy-vline 
WA_EWAEL_GRID_OPTIONS_STR-CANPASTE sy-vline 
WA_EWAEL_GRID_OPTIONS_STR-EDITFIELDS sy-vline 
WA_EWAEL_GRID_OPTIONS_STR-SELECTION_MODE sy-vline 
WA_EWAEL_GRID_OPTIONS_STR-APPL_FILLDATA_CALLBACK sy-vline 
WA_EWAEL_GRID_OPTIONS_STR-APPL_DATACHANGE_CALLBACK sy-vline 
WA_EWAEL_GRID_OPTIONS_STR-EVENT_ON_MODIFY sy-vline 
WA_EWAEL_GRID_OPTIONS_STR-TITLE sy-vline 
WA_EWAEL_GRID_OPTIONS_STR-TEXT sy-vline 
WA_EWAEL_GRID_OPTIONS_STR-SIZING sy-vline 
WA_EWAEL_GRID_OPTIONS_STR-CANREFRESH sy-vline 
WA_EWAEL_GRID_OPTIONS_STR-DELAYED_EVENT sy-vline      INTO ld_text SEPARATED BY SPACE.

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