ABAP Select data from SAP table IOCICTLGSUP into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP IOCICTLGSUP 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 IOCICTLGSUP. 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 IOCICTLGSUP 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_IOCICTLGSUP TYPE STANDARD TABLE OF IOCICTLGSUP,
      WA_IOCICTLGSUP TYPE IOCICTLGSUP,
      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: <IOCICTLGSUP> TYPE IOCICTLGSUP.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IOCICTLGSUP
*  INTO TABLE @DATA(IT_IOCICTLGSUP2).
*--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_IOCICTLGSUP INDEX 1 INTO DATA(WA_IOCICTLGSUP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IOCICTLGSUP>-MANDT = 1.
<IOCICTLGSUP>-OPNCTLGITEMPRPSLID = 1.
<IOCICTLGSUP>-OPNCTLGITEMPRPSLSUPPLIER = 1.
<IOCICTLGSUP>-OPNCTLGPRPSLDESCSEQUENCENUMBER = 1.
<IOCICTLGSUP>-NETPRICEAMOUNT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IOCICTLGSUP-CURRENCY, sy-vline,
  WA_IOCICTLGSUP-SUPPLIERMATERIALNUMBER, sy-vline,
  WA_IOCICTLGSUP-OPNCTLGITEMPRPSLLEADTIME, sy-vline,
  WA_IOCICTLGSUP-OPNCTLGITEMPRPSLUNITOFMEASURE, sy-vline,
  WA_IOCICTLGSUP-OPNCTLGITEMPRPSLPRICEUNITQTY, sy-vline,
  WA_IOCICTLGSUP-AUTHORIZATIONGROUP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IOCICTLGSUP 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_IOCICTLGSUP 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_IOCICTLGSUP INTO WA_IOCICTLGSUP.


*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 ALPHA, internal->external for field OPNCTLGITEMPRPSLSUPPLIER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IOCICTLGSUP-OPNCTLGITEMPRPSLSUPPLIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IOCICTLGSUP-OPNCTLGITEMPRPSLSUPPLIER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field OPNCTLGITEMPRPSLUNITOFMEASURE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IOCICTLGSUP-OPNCTLGITEMPRPSLUNITOFMEASURE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IOCICTLGSUP-OPNCTLGITEMPRPSLUNITOFMEASURE.
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_IOCICTLGSUP_STR, 
MANDT TYPE STRING,
OPNCTLGITEMPRPSLID TYPE STRING,
OPNCTLGITEMPRPSLSUPPLIER TYPE STRING,
OPNCTLGPRPSLDESCSEQUENCENUMBER TYPE STRING,
NETPRICEAMOUNT TYPE STRING,
CURRENCY TYPE STRING,
SUPPLIERMATERIALNUMBER TYPE STRING,
OPNCTLGITEMPRPSLLEADTIME TYPE STRING,
OPNCTLGITEMPRPSLUNITOFMEASURE TYPE STRING,
OPNCTLGITEMPRPSLPRICEUNITQTY TYPE STRING,
AUTHORIZATIONGROUP TYPE STRING,
PURREQNCATALOG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IOCICTLGSUP_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_IOCICTLGSUP_STR-MANDT sy-vline 
WA_IOCICTLGSUP_STR-OPNCTLGITEMPRPSLID sy-vline 
WA_IOCICTLGSUP_STR-OPNCTLGITEMPRPSLSUPPLIER sy-vline 
WA_IOCICTLGSUP_STR-OPNCTLGPRPSLDESCSEQUENCENUMBER sy-vline 
WA_IOCICTLGSUP_STR-NETPRICEAMOUNT sy-vline 
WA_IOCICTLGSUP_STR-CURRENCY sy-vline 
WA_IOCICTLGSUP_STR-SUPPLIERMATERIALNUMBER sy-vline 
WA_IOCICTLGSUP_STR-OPNCTLGITEMPRPSLLEADTIME sy-vline 
WA_IOCICTLGSUP_STR-OPNCTLGITEMPRPSLUNITOFMEASURE sy-vline 
WA_IOCICTLGSUP_STR-OPNCTLGITEMPRPSLPRICEUNITQTY sy-vline 
WA_IOCICTLGSUP_STR-AUTHORIZATIONGROUP sy-vline 
WA_IOCICTLGSUP_STR-PURREQNCATALOG sy-vline      INTO ld_text SEPARATED BY SPACE.

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