ABAP Select data from SAP table ISU_ROBJ_ALV into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISU_ROBJ_ALV
*  INTO TABLE @DATA(IT_ISU_ROBJ_ALV2).
*--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_ISU_ROBJ_ALV INDEX 1 INTO DATA(WA_ISU_ROBJ_ALV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISU_ROBJ_ALV>-LAUFNR = 1.
<ISU_ROBJ_ALV>-SERV_COUNT = 1.
<ISU_ROBJ_ALV>-DATE_CONCRETE = 1.
<ISU_ROBJ_ALV>-DAY_FLAG = 1.
<ISU_ROBJ_ALV>-WEEK_FLAG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISU_ROBJ_ALV-MNTH_FLAG, sy-vline,
  WA_ISU_ROBJ_ALV-SERV_TYPE, sy-vline,
  WA_ISU_ROBJ_ALV-STARTTIME, sy-vline,
  WA_ISU_ROBJ_ALV-STOPTIME, sy-vline,
  WA_ISU_ROBJ_ALV-AB, sy-vline,
  WA_ISU_ROBJ_ALV-BIS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISU_ROBJ_ALV 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_ISU_ROBJ_ALV 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_ISU_ROBJ_ALV INTO WA_ISU_ROBJ_ALV.


*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_ISU_ROBJ_ALV_STR, 
LAUFNR TYPE STRING,
SERV_COUNT TYPE STRING,
DATE_CONCRETE TYPE STRING,
DAY_FLAG TYPE STRING,
WEEK_FLAG TYPE STRING,
MNTH_FLAG TYPE STRING,
SERV_TYPE TYPE STRING,
STARTTIME TYPE STRING,
STOPTIME TYPE STRING,
AB TYPE STRING,
BIS TYPE STRING,
STARTDATE TYPE STRING,
INTERVALL TYPE STRING,
WEEKDAY TYPE STRING,
EXPAND TYPE STRING,
COLOUR TYPE STRING,
TIMEFRAME TYPE STRING,
NEW_DATE TYPE STRING,
DEL_DATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISU_ROBJ_ALV_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_ISU_ROBJ_ALV_STR-LAUFNR sy-vline 
WA_ISU_ROBJ_ALV_STR-SERV_COUNT sy-vline 
WA_ISU_ROBJ_ALV_STR-DATE_CONCRETE sy-vline 
WA_ISU_ROBJ_ALV_STR-DAY_FLAG sy-vline 
WA_ISU_ROBJ_ALV_STR-WEEK_FLAG sy-vline 
WA_ISU_ROBJ_ALV_STR-MNTH_FLAG sy-vline 
WA_ISU_ROBJ_ALV_STR-SERV_TYPE sy-vline 
WA_ISU_ROBJ_ALV_STR-STARTTIME sy-vline 
WA_ISU_ROBJ_ALV_STR-STOPTIME sy-vline 
WA_ISU_ROBJ_ALV_STR-AB sy-vline 
WA_ISU_ROBJ_ALV_STR-BIS sy-vline 
WA_ISU_ROBJ_ALV_STR-STARTDATE sy-vline 
WA_ISU_ROBJ_ALV_STR-INTERVALL sy-vline 
WA_ISU_ROBJ_ALV_STR-WEEKDAY sy-vline 
WA_ISU_ROBJ_ALV_STR-EXPAND sy-vline 
WA_ISU_ROBJ_ALV_STR-COLOUR sy-vline 
WA_ISU_ROBJ_ALV_STR-TIMEFRAME sy-vline 
WA_ISU_ROBJ_ALV_STR-NEW_DATE sy-vline 
WA_ISU_ROBJ_ALV_STR-DEL_DATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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