ABAP Select data from SAP table ICCTRACT 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 ICCTRACT 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 ICCTRACT. 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 ICCTRACT 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_ICCTRACT TYPE STANDARD TABLE OF ICCTRACT,
      WA_ICCTRACT TYPE ICCTRACT,
      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: <ICCTRACT> TYPE ICCTRACT.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICCTRACT
*  INTO TABLE @DATA(IT_ICCTRACT2).
*--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_ICCTRACT INDEX 1 INTO DATA(WA_ICCTRACT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICCTRACT>-FISCVAR = 1.
<ICCTRACT>-FISCPER = 1.
<ICCTRACT>-KOKRS = 1.
<ICCTRACT>-KOSTL = 1.
<ICCTRACT>-LSTAR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICCTRACT-VKSTA, sy-vline,
  WA_ICCTRACT-WRTTP, sy-vline,
  WA_ICCTRACT-VTYPE, sy-vline,
  WA_ICCTRACT-VTSTAT, sy-vline,
  WA_ICCTRACT-VERSN, sy-vline,
  WA_ICCTRACT-MEASTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICCTRACT 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_ICCTRACT 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_ICCTRACT INTO WA_ICCTRACT.


*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 PERI7, internal->external for field FISCPER
CALL FUNCTION 'CONVERSION_EXIT_PERI7_OUTPUT'
  EXPORTING
    input =                      WA_ICCTRACT-FISCPER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICCTRACT-FISCPER.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit CUNIT, internal->external for field LEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ICCTRACT-LEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICCTRACT-LEINH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field AUSEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ICCTRACT-AUSEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICCTRACT-AUSEH.
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_ICCTRACT_STR, 
FISCVAR TYPE STRING,
FISCPER TYPE STRING,
KOKRS TYPE STRING,
KOSTL TYPE STRING,
LSTAR TYPE STRING,
VKSTA TYPE STRING,
WRTTP TYPE STRING,
VTYPE TYPE STRING,
VTSTAT TYPE STRING,
VERSN TYPE STRING,
MEASTYPE TYPE STRING,
SLST TYPE STRING,
SKAP TYPE STRING,
SDIS TYPE STRING,
SAUS TYPE STRING,
LEINH TYPE STRING,
AUSEH TYPE STRING,
SAEQ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICCTRACT_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_ICCTRACT_STR-FISCVAR sy-vline 
WA_ICCTRACT_STR-FISCPER sy-vline 
WA_ICCTRACT_STR-KOKRS sy-vline 
WA_ICCTRACT_STR-KOSTL sy-vline 
WA_ICCTRACT_STR-LSTAR sy-vline 
WA_ICCTRACT_STR-VKSTA sy-vline 
WA_ICCTRACT_STR-WRTTP sy-vline 
WA_ICCTRACT_STR-VTYPE sy-vline 
WA_ICCTRACT_STR-VTSTAT sy-vline 
WA_ICCTRACT_STR-VERSN sy-vline 
WA_ICCTRACT_STR-MEASTYPE sy-vline 
WA_ICCTRACT_STR-SLST sy-vline 
WA_ICCTRACT_STR-SKAP sy-vline 
WA_ICCTRACT_STR-SDIS sy-vline 
WA_ICCTRACT_STR-SAUS sy-vline 
WA_ICCTRACT_STR-LEINH sy-vline 
WA_ICCTRACT_STR-AUSEH sy-vline 
WA_ICCTRACT_STR-SAEQ sy-vline      INTO ld_text SEPARATED BY SPACE.

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