ABAP Select data from SAP table IGHOPNLABEL 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 IGHOPNLABEL 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 IGHOPNLABEL. 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 IGHOPNLABEL 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_IGHOPNLABEL TYPE STANDARD TABLE OF IGHOPNLABEL,
      WA_IGHOPNLABEL TYPE IGHOPNLABEL,
      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: <IGHOPNLABEL> TYPE IGHOPNLABEL.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IGHOPNLABEL
*  INTO TABLE @DATA(IT_IGHOPNLABEL2).
*--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_IGHOPNLABEL INDEX 1 INTO DATA(WA_IGHOPNLABEL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IGHOPNLABEL>-MANDT = 1.
<IGHOPNLABEL>-PRODUCTIONNETWORKID = 1.
<IGHOPNLABEL>-ALTERNATELABELINGSYSTEM = 1.
<IGHOPNLABEL>-FUNCTIONALLOCATIONLABELVERSION = 1.
<IGHOPNLABEL>-FUNCTIONALLOCLABELISACTIVE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IGHOPNLABEL-FUNCTIONALLOCATIONLABELNAME, sy-vline,
  WA_IGHOPNLABEL-FUNCLOCATIONSTRUCTURE, sy-vline,
  WA_IGHOPNLABEL-FUNCNLLOCLABELISPRIMARYLABEL, sy-vline,
  WA_IGHOPNLABEL-LABELISREUSABLE, sy-vline,
  WA_IGHOPNLABEL-LASTCHANGEDATETIME, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_IGHOPNLABEL 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_IGHOPNLABEL 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_IGHOPNLABEL INTO WA_IGHOPNLABEL.


*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 TPLNR, internal->external for field PRODUCTIONNETWORKID
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_IGHOPNLABEL-PRODUCTIONNETWORKID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IGHOPNLABEL-PRODUCTIONNETWORKID.
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_IGHOPNLABEL_STR, 
MANDT TYPE STRING,
PRODUCTIONNETWORKID TYPE STRING,
ALTERNATELABELINGSYSTEM TYPE STRING,
FUNCTIONALLOCATIONLABELVERSION TYPE STRING,
FUNCTIONALLOCLABELISACTIVE TYPE STRING,
FUNCTIONALLOCATIONLABELNAME TYPE STRING,
FUNCLOCATIONSTRUCTURE TYPE STRING,
FUNCNLLOCLABELISPRIMARYLABEL TYPE STRING,
LABELISREUSABLE TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IGHOPNLABEL_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_IGHOPNLABEL_STR-MANDT sy-vline 
WA_IGHOPNLABEL_STR-PRODUCTIONNETWORKID sy-vline 
WA_IGHOPNLABEL_STR-ALTERNATELABELINGSYSTEM sy-vline 
WA_IGHOPNLABEL_STR-FUNCTIONALLOCATIONLABELVERSION sy-vline 
WA_IGHOPNLABEL_STR-FUNCTIONALLOCLABELISACTIVE sy-vline 
WA_IGHOPNLABEL_STR-FUNCTIONALLOCATIONLABELNAME sy-vline 
WA_IGHOPNLABEL_STR-FUNCLOCATIONSTRUCTURE sy-vline 
WA_IGHOPNLABEL_STR-FUNCNLLOCLABELISPRIMARYLABEL sy-vline 
WA_IGHOPNLABEL_STR-LABELISREUSABLE sy-vline 
WA_IGHOPNLABEL_STR-LASTCHANGEDATETIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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