ABAP Select data from SAP table FSH_ATP_GRID_FIELDS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FSH_ATP_GRID_FIELDS
*  INTO TABLE @DATA(IT_FSH_ATP_GRID_FIELDS2).
*--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_FSH_ATP_GRID_FIELDS INDEX 1 INTO DATA(WA_FSH_ATP_GRID_FIELDS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FSH_ATP_GRID_FIELDS>-CHARACTERIS = 1.
<FSH_ATP_GRID_FIELDS>-TOTALS = 1.
<FSH_ATP_GRID_FIELDS>-VAL01 = 1.
<FSH_ATP_GRID_FIELDS>-VAL02 = 1.
<FSH_ATP_GRID_FIELDS>-VAL03 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FSH_ATP_GRID_FIELDS-VAL04, sy-vline,
  WA_FSH_ATP_GRID_FIELDS-VAL05, sy-vline,
  WA_FSH_ATP_GRID_FIELDS-VAL06, sy-vline,
  WA_FSH_ATP_GRID_FIELDS-VAL07, sy-vline,
  WA_FSH_ATP_GRID_FIELDS-VAL08, sy-vline,
  WA_FSH_ATP_GRID_FIELDS-VAL09, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FSH_ATP_GRID_FIELDS 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_FSH_ATP_GRID_FIELDS 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_FSH_ATP_GRID_FIELDS INTO WA_FSH_ATP_GRID_FIELDS.


*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.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_FSH_ATP_GRID_FIELDS-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FSH_ATP_GRID_FIELDS-MEINS.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

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

TYPES: BEGIN OF T_FSH_ATP_GRID_FIELDS_STR, 
CHARACTERIS TYPE STRING,
TOTALS TYPE STRING,
VAL01 TYPE STRING,
VAL02 TYPE STRING,
VAL03 TYPE STRING,
VAL04 TYPE STRING,
VAL05 TYPE STRING,
VAL06 TYPE STRING,
VAL07 TYPE STRING,
VAL08 TYPE STRING,
VAL09 TYPE STRING,
VAL10 TYPE STRING,
VAL11 TYPE STRING,
VAL12 TYPE STRING,
VAL13 TYPE STRING,
VAL14 TYPE STRING,
VAL15 TYPE STRING,
VAL16 TYPE STRING,
VAL17 TYPE STRING,
VAL18 TYPE STRING,
VAL19 TYPE STRING,
VAL20 TYPE STRING,
VAL21 TYPE STRING,
VAL22 TYPE STRING,
VAL23 TYPE STRING,
VAL24 TYPE STRING,
VAL25 TYPE STRING,
VAL26 TYPE STRING,
VAL27 TYPE STRING,
VAL28 TYPE STRING,
VAL29 TYPE STRING,
VAL30 TYPE STRING,
VAL31 TYPE STRING,
VAL32 TYPE STRING,
VAL33 TYPE STRING,
VAL34 TYPE STRING,
VAL35 TYPE STRING,
VAL36 TYPE STRING,
VAL37 TYPE STRING,
VAL38 TYPE STRING,
VAL39 TYPE STRING,
VAL40 TYPE STRING,
VAL41 TYPE STRING,
VAL42 TYPE STRING,
VAL43 TYPE STRING,
VAL44 TYPE STRING,
VAL45 TYPE STRING,
VAL46 TYPE STRING,
VAL47 TYPE STRING,
VAL48 TYPE STRING,
VAL49 TYPE STRING,
VAL50 TYPE STRING,
MEINS TYPE STRING,
Y_INDEX TYPE STRING,
SUM_VAL TYPE STRING,
T_COLOR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FSH_ATP_GRID_FIELDS_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_FSH_ATP_GRID_FIELDS_STR-CHARACTERIS sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-TOTALS sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL01 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL02 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL03 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL04 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL05 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL06 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL07 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL08 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL09 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL10 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL11 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL12 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL13 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL14 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL15 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL16 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL17 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL18 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL19 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL20 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL21 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL22 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL23 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL24 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL25 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL26 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL27 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL28 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL29 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL30 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL31 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL32 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL33 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL34 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL35 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL36 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL37 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL38 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL39 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL40 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL41 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL42 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL43 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL44 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL45 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL46 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL47 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL48 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL49 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-VAL50 sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-MEINS sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-Y_INDEX sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-SUM_VAL sy-vline 
WA_FSH_ATP_GRID_FIELDS_STR-T_COLOR sy-vline      INTO ld_text SEPARATED BY SPACE.

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