ABAP Select data from SAP table HROMGRIDST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HROMGRIDST
*  INTO TABLE @DATA(IT_HROMGRIDST2).
*--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_HROMGRIDST INDEX 1 INTO DATA(WA_HROMGRIDST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HROMGRIDST>-DISP_OBJ = 1.
<HROMGRIDST>-PLVAR = 1.
<HROMGRIDST>-OTYPE = 1.
<HROMGRIDST>-OBJID = 1.
<HROMGRIDST>-BEGDA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HROMGRIDST-ENDDA, sy-vline,
  WA_HROMGRIDST-ISTAT, sy-vline,
  WA_HROMGRIDST-HISTO, sy-vline,
  WA_HROMGRIDST-SHORT, sy-vline,
  WA_HROMGRIDST-STEXT, sy-vline,
  WA_HROMGRIDST-REALO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HROMGRIDST 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_HROMGRIDST 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_HROMGRIDST INTO WA_HROMGRIDST.


*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_HROMGRIDST_STR, 
DISP_OBJ TYPE STRING,
PLVAR TYPE STRING,
OTYPE TYPE STRING,
OBJID TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
ISTAT TYPE STRING,
HISTO TYPE STRING,
SHORT TYPE STRING,
STEXT TYPE STRING,
REALO TYPE STRING,
NODE_KEY TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
COL_1 TYPE STRING,
COL_2 TYPE STRING,
COL_3 TYPE STRING,
COL_4 TYPE STRING,
COL_5 TYPE STRING,
COL_6 TYPE STRING,
COL_7 TYPE STRING,
COL_8 TYPE STRING,
COL_9 TYPE STRING,
COL_10 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HROMGRIDST_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_HROMGRIDST_STR-DISP_OBJ sy-vline 
WA_HROMGRIDST_STR-PLVAR sy-vline 
WA_HROMGRIDST_STR-OTYPE sy-vline 
WA_HROMGRIDST_STR-OBJID sy-vline 
WA_HROMGRIDST_STR-BEGDA sy-vline 
WA_HROMGRIDST_STR-ENDDA sy-vline 
WA_HROMGRIDST_STR-ISTAT sy-vline 
WA_HROMGRIDST_STR-HISTO sy-vline 
WA_HROMGRIDST_STR-SHORT sy-vline 
WA_HROMGRIDST_STR-STEXT sy-vline 
WA_HROMGRIDST_STR-REALO sy-vline 
WA_HROMGRIDST_STR-NODE_KEY sy-vline 
WA_HROMGRIDST_STR-BEGDA sy-vline 
WA_HROMGRIDST_STR-ENDDA sy-vline 
WA_HROMGRIDST_STR-COL_1 sy-vline 
WA_HROMGRIDST_STR-COL_2 sy-vline 
WA_HROMGRIDST_STR-COL_3 sy-vline 
WA_HROMGRIDST_STR-COL_4 sy-vline 
WA_HROMGRIDST_STR-COL_5 sy-vline 
WA_HROMGRIDST_STR-COL_6 sy-vline 
WA_HROMGRIDST_STR-COL_7 sy-vline 
WA_HROMGRIDST_STR-COL_8 sy-vline 
WA_HROMGRIDST_STR-COL_9 sy-vline 
WA_HROMGRIDST_STR-COL_10 sy-vline      INTO ld_text SEPARATED BY SPACE.

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