ABAP Select data from SAP table ERTPCOMPDATA into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ERTPCOMPDATA
*  INTO TABLE @DATA(IT_ERTPCOMPDATA2).
*--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_ERTPCOMPDATA INDEX 1 INTO DATA(WA_ERTPCOMPDATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ERTPCOMPDATA>-HEAD = 1.
<ERTPCOMPDATA>-MANDT = 1.
<ERTPCOMPDATA>-RTPCOMP = 1.
<ERTPCOMPDATA>-SEASONBLOCK = 1.
<ERTPCOMPDATA>-DAYTYPEBLOCK = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ERTPCOMPDATA-TOUBLOCK, sy-vline,
  WA_ERTPCOMPDATA-RTPCOMPTEXT, sy-vline,
  WA_ERTPCOMPDATA-CODE, sy-vline,
  WA_ERTPCOMPDATA-SEASON, sy-vline,
  WA_ERTPCOMPDATA-HEAD, sy-vline,
  WA_ERTPCOMPDATA-MANDT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ERTPCOMPDATA 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_ERTPCOMPDATA 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_ERTPCOMPDATA INTO WA_ERTPCOMPDATA.


*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_ERTPCOMPDATA_STR, 
HEAD TYPE STRING,
MANDT TYPE STRING,
RTPCOMP TYPE STRING,
SEASONBLOCK TYPE STRING,
DAYTYPEBLOCK TYPE STRING,
TOUBLOCK TYPE STRING,
RTPCOMPTEXT TYPE STRING,
CODE TYPE STRING,
SEASON TYPE STRING,
HEAD TYPE STRING,
MANDT TYPE STRING,
SEASONBLOCK TYPE STRING,
SEASONBLOCKTEXT TYPE STRING,
IDEF TYPE STRING,
ISEASON TYPE STRING,
DAYTYPE TYPE STRING,
HEAD TYPE STRING,
MANDT TYPE STRING,
DAYTYPEBLOCK TYPE STRING,
DAYTYPEBLOCKTXT TYPE STRING,
IDEF TYPE STRING,
IDAYTYPE TYPE STRING,
TOU TYPE STRING,
HEAD TYPE STRING,
MANDT TYPE STRING,
TOUBLOCK TYPE STRING,
TOUBLOCKTEXT TYPE STRING,
IDEF TYPE STRING,
ITOU TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ERTPCOMPDATA_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_ERTPCOMPDATA_STR-HEAD sy-vline 
WA_ERTPCOMPDATA_STR-MANDT sy-vline 
WA_ERTPCOMPDATA_STR-RTPCOMP sy-vline 
WA_ERTPCOMPDATA_STR-SEASONBLOCK sy-vline 
WA_ERTPCOMPDATA_STR-DAYTYPEBLOCK sy-vline 
WA_ERTPCOMPDATA_STR-TOUBLOCK sy-vline 
WA_ERTPCOMPDATA_STR-RTPCOMPTEXT sy-vline 
WA_ERTPCOMPDATA_STR-CODE sy-vline 
WA_ERTPCOMPDATA_STR-SEASON sy-vline 
WA_ERTPCOMPDATA_STR-HEAD sy-vline 
WA_ERTPCOMPDATA_STR-MANDT sy-vline 
WA_ERTPCOMPDATA_STR-SEASONBLOCK sy-vline 
WA_ERTPCOMPDATA_STR-SEASONBLOCKTEXT sy-vline 
WA_ERTPCOMPDATA_STR-IDEF sy-vline 
WA_ERTPCOMPDATA_STR-ISEASON sy-vline 
WA_ERTPCOMPDATA_STR-DAYTYPE sy-vline 
WA_ERTPCOMPDATA_STR-HEAD sy-vline 
WA_ERTPCOMPDATA_STR-MANDT sy-vline 
WA_ERTPCOMPDATA_STR-DAYTYPEBLOCK sy-vline 
WA_ERTPCOMPDATA_STR-DAYTYPEBLOCKTXT sy-vline 
WA_ERTPCOMPDATA_STR-IDEF sy-vline 
WA_ERTPCOMPDATA_STR-IDAYTYPE sy-vline 
WA_ERTPCOMPDATA_STR-TOU sy-vline 
WA_ERTPCOMPDATA_STR-HEAD sy-vline 
WA_ERTPCOMPDATA_STR-MANDT sy-vline 
WA_ERTPCOMPDATA_STR-TOUBLOCK sy-vline 
WA_ERTPCOMPDATA_STR-TOUBLOCKTEXT sy-vline 
WA_ERTPCOMPDATA_STR-IDEF sy-vline 
WA_ERTPCOMPDATA_STR-ITOU sy-vline      INTO ld_text SEPARATED BY SPACE.

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