ABAP Select data from SAP table ICNTWSTA 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 ICNTWSTA 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 ICNTWSTA. 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 ICNTWSTA 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_ICNTWSTA TYPE STANDARD TABLE OF ICNTWSTA,
      WA_ICNTWSTA TYPE ICNTWSTA,
      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: <ICNTWSTA> TYPE ICNTWSTA.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICNTWSTA
*  INTO TABLE @DATA(IT_ICNTWSTA2).
*--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_ICNTWSTA INDEX 1 INTO DATA(WA_ICNTWSTA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICNTWSTA>-FISCVAR = 1.
<ICNTWSTA>-FISCPER = 1.
<ICNTWSTA>-KOKRS = 1.
<ICNTWSTA>-PSPID = 1.
<ICNTWSTA>-POSID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICNTWSTA-AUFNR, sy-vline,
  WA_ICNTWSTA-STAGR, sy-vline,
  WA_ICNTWSTA-WRTTP, sy-vline,
  WA_ICNTWSTA-VTYPE, sy-vline,
  WA_ICNTWSTA-VTSTAT, sy-vline,
  WA_ICNTWSTA-VERSN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICNTWSTA 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_ICNTWSTA 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_ICNTWSTA INTO WA_ICNTWSTA.


*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_ICNTWSTA-FISCPER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICNTWSTA-FISCPER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSN, internal->external for field PSPID
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_ICNTWSTA-PSPID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICNTWSTA-PSPID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSN, internal->external for field POSID
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_ICNTWSTA-POSID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICNTWSTA-POSID.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit ALPHA, internal->external for field PGRANT_NBR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICNTWSTA-PGRANT_NBR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICNTWSTA-PGRANT_NBR.
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_ICNTWSTA_STR, 
FISCVAR TYPE STRING,
FISCPER TYPE STRING,
KOKRS TYPE STRING,
PSPID TYPE STRING,
POSID TYPE STRING,
AUFNR TYPE STRING,
STAGR TYPE STRING,
WRTTP TYPE STRING,
VTYPE TYPE STRING,
VTSTAT TYPE STRING,
VERSN TYPE STRING,
MEASTYPE TYPE STRING,
SSME TYPE STRING,
SSMED TYPE STRING,
MEINH TYPE STRING,
GUID TYPE STRING,
CPR_GUID TYPE STRING,
GEBER TYPE STRING,
PGEBER TYPE STRING,
FKBER TYPE STRING,
PFKBER TYPE STRING,
GRANT_NBR TYPE STRING,
PGRANT_NBR TYPE STRING,
FIKRS TYPE STRING,
BUDGET_PD TYPE STRING,
PBUDGET_PD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICNTWSTA_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_ICNTWSTA_STR-FISCVAR sy-vline 
WA_ICNTWSTA_STR-FISCPER sy-vline 
WA_ICNTWSTA_STR-KOKRS sy-vline 
WA_ICNTWSTA_STR-PSPID sy-vline 
WA_ICNTWSTA_STR-POSID sy-vline 
WA_ICNTWSTA_STR-AUFNR sy-vline 
WA_ICNTWSTA_STR-STAGR sy-vline 
WA_ICNTWSTA_STR-WRTTP sy-vline 
WA_ICNTWSTA_STR-VTYPE sy-vline 
WA_ICNTWSTA_STR-VTSTAT sy-vline 
WA_ICNTWSTA_STR-VERSN sy-vline 
WA_ICNTWSTA_STR-MEASTYPE sy-vline 
WA_ICNTWSTA_STR-SSME sy-vline 
WA_ICNTWSTA_STR-SSMED sy-vline 
WA_ICNTWSTA_STR-MEINH sy-vline 
WA_ICNTWSTA_STR-GUID sy-vline 
WA_ICNTWSTA_STR-CPR_GUID sy-vline 
WA_ICNTWSTA_STR-GEBER sy-vline 
WA_ICNTWSTA_STR-PGEBER sy-vline 
WA_ICNTWSTA_STR-FKBER sy-vline 
WA_ICNTWSTA_STR-PFKBER sy-vline 
WA_ICNTWSTA_STR-GRANT_NBR sy-vline 
WA_ICNTWSTA_STR-PGRANT_NBR sy-vline 
WA_ICNTWSTA_STR-FIKRS sy-vline 
WA_ICNTWSTA_STR-BUDGET_PD sy-vline 
WA_ICNTWSTA_STR-PBUDGET_PD sy-vline      INTO ld_text SEPARATED BY SPACE.

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