ABAP Select data from SAP table EEDMIDEGRID_SCREEN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EEDMIDEGRID_SCREEN
*  INTO TABLE @DATA(IT_EEDMIDEGRID_SCREEN2).
*--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_EEDMIDEGRID_SCREEN INDEX 1 INTO DATA(WA_EEDMIDEGRID_SCREEN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EEDMIDEGRID_SCREEN>-HEADER = 1.
<EEDMIDEGRID_SCREEN>-MANDT = 1.
<EEDMIDEGRID_SCREEN>-GRID_ID = 1.
<EEDMIDEGRID_SCREEN>-SUP_GRID_ID = 1.
<EEDMIDEGRID_SCREEN>-SPARTYP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EEDMIDEGRID_SCREEN-GRID_LEVEL_TYPE, sy-vline,
  WA_EEDMIDEGRID_SCREEN-EXTERNALID, sy-vline,
  WA_EEDMIDEGRID_SCREEN-EXT_CODELISTID, sy-vline,
  WA_EEDMIDEGRID_SCREEN-GRID_NAME, sy-vline,
  WA_EEDMIDEGRID_SCREEN-GRID_LEVEL, sy-vline,
  WA_EEDMIDEGRID_SCREEN-BIS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EEDMIDEGRID_SCREEN 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_EEDMIDEGRID_SCREEN 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_EEDMIDEGRID_SCREEN INTO WA_EEDMIDEGRID_SCREEN.


*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_EEDMIDEGRID_SCREEN_STR, 
HEADER TYPE STRING,
MANDT TYPE STRING,
GRID_ID TYPE STRING,
SUP_GRID_ID TYPE STRING,
SPARTYP TYPE STRING,
GRID_LEVEL_TYPE TYPE STRING,
EXTERNALID TYPE STRING,
EXT_CODELISTID TYPE STRING,
GRID_NAME TYPE STRING,
GRID_LEVEL TYPE STRING,
BIS TYPE STRING,
AB TYPE STRING,
DISTRIBUTOR TYPE STRING,
SETTLCOORD TYPE STRING,
GRID_REF TYPE STRING,
GRID_LEVEL_R TYPE STRING,
PODGROUP TYPE STRING,
BIS_R TYPE STRING,
AB_R TYPE STRING,
TARIFTYP TYPE STRING,
TARIFART TYPE STRING,
KONDIGR TYPE STRING,
TARIFTYP_S TYPE STRING,
TARIFART_S TYPE STRING,
KONDIGR_S TYPE STRING,
DIVISION TYPE STRING,
AMS TYPE STRING,
AMS_DEFAULT TYPE STRING,
T_GRID_LEVEL TYPE STRING,
T_DIST TYPE STRING,
T_GRID_RATES TYPE STRING,
T_SUPP_RATES TYPE STRING,
TREE TYPE STRING,
MANDT TYPE STRING,
GRID_ID TYPE STRING,
SUP_GRID_ID TYPE STRING,
SPARTYP TYPE STRING,
GRID_LEVEL_TYPE TYPE STRING,
EXTERNALID TYPE STRING,
EXT_CODELISTID TYPE STRING,
GRID_NAME TYPE STRING,
DISTRIBUTOR TYPE STRING,
SETTLCOORD TYPE STRING,
T_GRID_LEVEL TYPE STRING,
GRIDS TYPE STRING,
T_AMS_ALLOC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EEDMIDEGRID_SCREEN_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_EEDMIDEGRID_SCREEN_STR-HEADER sy-vline 
WA_EEDMIDEGRID_SCREEN_STR-MANDT sy-vline 
WA_EEDMIDEGRID_SCREEN_STR-GRID_ID sy-vline 
WA_EEDMIDEGRID_SCREEN_STR-SUP_GRID_ID sy-vline 
WA_EEDMIDEGRID_SCREEN_STR-SPARTYP sy-vline 
WA_EEDMIDEGRID_SCREEN_STR-GRID_LEVEL_TYPE sy-vline 
WA_EEDMIDEGRID_SCREEN_STR-EXTERNALID sy-vline 
WA_EEDMIDEGRID_SCREEN_STR-EXT_CODELISTID sy-vline 
WA_EEDMIDEGRID_SCREEN_STR-GRID_NAME sy-vline 
WA_EEDMIDEGRID_SCREEN_STR-GRID_LEVEL sy-vline 
WA_EEDMIDEGRID_SCREEN_STR-BIS sy-vline 
WA_EEDMIDEGRID_SCREEN_STR-AB sy-vline 
WA_EEDMIDEGRID_SCREEN_STR-DISTRIBUTOR sy-vline 
WA_EEDMIDEGRID_SCREEN_STR-SETTLCOORD sy-vline 
WA_EEDMIDEGRID_SCREEN_STR-GRID_REF sy-vline 
WA_EEDMIDEGRID_SCREEN_STR-GRID_LEVEL_R sy-vline 
WA_EEDMIDEGRID_SCREEN_STR-PODGROUP sy-vline 
WA_EEDMIDEGRID_SCREEN_STR-BIS_R sy-vline 
WA_EEDMIDEGRID_SCREEN_STR-AB_R sy-vline 
WA_EEDMIDEGRID_SCREEN_STR-TARIFTYP sy-vline 
WA_EEDMIDEGRID_SCREEN_STR-TARIFART sy-vline 
WA_EEDMIDEGRID_SCREEN_STR-KONDIGR sy-vline 
WA_EEDMIDEGRID_SCREEN_STR-TARIFTYP_S sy-vline 
WA_EEDMIDEGRID_SCREEN_STR-TARIFART_S sy-vline 
WA_EEDMIDEGRID_SCREEN_STR-KONDIGR_S sy-vline 
WA_EEDMIDEGRID_SCREEN_STR-DIVISION sy-vline 
WA_EEDMIDEGRID_SCREEN_STR-AMS sy-vline 
WA_EEDMIDEGRID_SCREEN_STR-AMS_DEFAULT sy-vline 
WA_EEDMIDEGRID_SCREEN_STR-T_GRID_LEVEL sy-vline 
WA_EEDMIDEGRID_SCREEN_STR-T_DIST sy-vline 
WA_EEDMIDEGRID_SCREEN_STR-T_GRID_RATES sy-vline 
WA_EEDMIDEGRID_SCREEN_STR-T_SUPP_RATES sy-vline 
WA_EEDMIDEGRID_SCREEN_STR-TREE sy-vline 
WA_EEDMIDEGRID_SCREEN_STR-MANDT sy-vline 
WA_EEDMIDEGRID_SCREEN_STR-GRID_ID sy-vline 
WA_EEDMIDEGRID_SCREEN_STR-SUP_GRID_ID sy-vline 
WA_EEDMIDEGRID_SCREEN_STR-SPARTYP sy-vline 
WA_EEDMIDEGRID_SCREEN_STR-GRID_LEVEL_TYPE sy-vline 
WA_EEDMIDEGRID_SCREEN_STR-EXTERNALID sy-vline 
WA_EEDMIDEGRID_SCREEN_STR-EXT_CODELISTID sy-vline 
WA_EEDMIDEGRID_SCREEN_STR-GRID_NAME sy-vline 
WA_EEDMIDEGRID_SCREEN_STR-DISTRIBUTOR sy-vline 
WA_EEDMIDEGRID_SCREEN_STR-SETTLCOORD sy-vline 
WA_EEDMIDEGRID_SCREEN_STR-T_GRID_LEVEL sy-vline 
WA_EEDMIDEGRID_SCREEN_STR-GRIDS sy-vline 
WA_EEDMIDEGRID_SCREEN_STR-T_AMS_ALLOC sy-vline      INTO ld_text SEPARATED BY SPACE.

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