ABAP Select data from SAP table ICS_WC_RWB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICS_WC_RWB
*  INTO TABLE @DATA(IT_ICS_WC_RWB2).
*--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_ICS_WC_RWB INDEX 1 INTO DATA(WA_ICS_WC_RWB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICS_WC_RWB>-MANDT = 1.
<ICS_WC_RWB>-UPDID = 1.
<ICS_WC_RWB>-STATUS = 1.
<ICS_WC_RWB>-RELEASEID = 1.
<ICS_WC_RWB>-ORIGIN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICS_WC_RWB-IDENT, sy-vline,
  WA_ICS_WC_RWB-CHANGEDBY, sy-vline,
  WA_ICS_WC_RWB-CHANGETIME, sy-vline,
  WA_ICS_WC_RWB-INACTIVETIME, sy-vline,
  WA_ICS_WC_RWB-EFFFROMTIME, sy-vline,
  WA_ICS_WC_RWB-EFFTOTIME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICS_WC_RWB 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_ICS_WC_RWB 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_ICS_WC_RWB INTO WA_ICS_WC_RWB.


*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 TSTAM, internal->external for field CHANGETIME
CALL FUNCTION 'CONVERSION_EXIT_TSTAM_OUTPUT'
  EXPORTING
    input =                      WA_ICS_WC_RWB-CHANGETIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICS_WC_RWB-CHANGETIME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTAM, internal->external for field INACTIVETIME
CALL FUNCTION 'CONVERSION_EXIT_TSTAM_OUTPUT'
  EXPORTING
    input =                      WA_ICS_WC_RWB-INACTIVETIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICS_WC_RWB-INACTIVETIME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTAM, internal->external for field EFFFROMTIME
CALL FUNCTION 'CONVERSION_EXIT_TSTAM_OUTPUT'
  EXPORTING
    input =                      WA_ICS_WC_RWB-EFFFROMTIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICS_WC_RWB-EFFFROMTIME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTAM, internal->external for field EFFTOTIME
CALL FUNCTION 'CONVERSION_EXIT_TSTAM_OUTPUT'
  EXPORTING
    input =                      WA_ICS_WC_RWB-EFFTOTIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICS_WC_RWB-EFFTOTIME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTAM, internal->external for field TERMTIME
CALL FUNCTION 'CONVERSION_EXIT_TSTAM_OUTPUT'
  EXPORTING
    input =                      WA_ICS_WC_RWB-TERMTIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICS_WC_RWB-TERMTIME.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ICLDC, internal->external for field SCPOS_VALPERUNIT
CALL FUNCTION 'CONVERSION_EXIT_ICLDC_OUTPUT'
  EXPORTING
    input =                      WA_ICS_WC_RWB-SCPOS_VALPERUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICS_WC_RWB-SCPOS_VALPERUNIT.
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_ICS_WC_RWB_STR, 
MANDT TYPE STRING,
UPDID TYPE STRING,
STATUS TYPE STRING,
RELEASEID TYPE STRING,
ORIGIN TYPE STRING,
IDENT TYPE STRING,
CHANGEDBY TYPE STRING,
CHANGETIME TYPE STRING,
INACTIVETIME TYPE STRING,
EFFFROMTIME TYPE STRING,
EFFTOTIME TYPE STRING,
TERMTIME TYPE STRING,
DELETED TYPE STRING,
SCPOS_QUANTITY TYPE STRING,
SCPOS_QUANTITYTO TYPE STRING,
SCPOS_QUANUNIT TYPE STRING,
SCPOS_VALPERUNIT TYPE STRING,
COUNTRY TYPE STRING,
REGION TYPE STRING,
DISABILITY_CLASS TYPE STRING,
CURRENCY TYPE STRING,
SAWW TYPE STRING,
BENEFIT_RULE TYPE STRING,
MAX_BEN TYPE STRING,
MAX_RULE TYPE STRING,
MIN_BEN TYPE STRING,
MIN_RULE TYPE STRING,
WAITING_PERIOD TYPE STRING,
RETRO_PERIOD TYPE STRING,
MAX_PERIOD TYPE STRING,
MAX_TOTAL TYPE STRING,
FORMULA TYPE STRING,
BEN_CONS TYPE STRING,
CALCINSTR TYPE STRING,
SCPOSN TYPE STRING,
SCPOSLN TYPE STRING,
TOTAL_SCHED TYPE STRING,
SCH_SERVCATID TYPE STRING,
SCH_SC_VARIANT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICS_WC_RWB_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_ICS_WC_RWB_STR-MANDT sy-vline 
WA_ICS_WC_RWB_STR-UPDID sy-vline 
WA_ICS_WC_RWB_STR-STATUS sy-vline 
WA_ICS_WC_RWB_STR-RELEASEID sy-vline 
WA_ICS_WC_RWB_STR-ORIGIN sy-vline 
WA_ICS_WC_RWB_STR-IDENT sy-vline 
WA_ICS_WC_RWB_STR-CHANGEDBY sy-vline 
WA_ICS_WC_RWB_STR-CHANGETIME sy-vline 
WA_ICS_WC_RWB_STR-INACTIVETIME sy-vline 
WA_ICS_WC_RWB_STR-EFFFROMTIME sy-vline 
WA_ICS_WC_RWB_STR-EFFTOTIME sy-vline 
WA_ICS_WC_RWB_STR-TERMTIME sy-vline 
WA_ICS_WC_RWB_STR-DELETED sy-vline 
WA_ICS_WC_RWB_STR-SCPOS_QUANTITY sy-vline 
WA_ICS_WC_RWB_STR-SCPOS_QUANTITYTO sy-vline 
WA_ICS_WC_RWB_STR-SCPOS_QUANUNIT sy-vline 
WA_ICS_WC_RWB_STR-SCPOS_VALPERUNIT sy-vline 
WA_ICS_WC_RWB_STR-COUNTRY sy-vline 
WA_ICS_WC_RWB_STR-REGION sy-vline 
WA_ICS_WC_RWB_STR-DISABILITY_CLASS sy-vline 
WA_ICS_WC_RWB_STR-CURRENCY sy-vline 
WA_ICS_WC_RWB_STR-SAWW sy-vline 
WA_ICS_WC_RWB_STR-BENEFIT_RULE sy-vline 
WA_ICS_WC_RWB_STR-MAX_BEN sy-vline 
WA_ICS_WC_RWB_STR-MAX_RULE sy-vline 
WA_ICS_WC_RWB_STR-MIN_BEN sy-vline 
WA_ICS_WC_RWB_STR-MIN_RULE sy-vline 
WA_ICS_WC_RWB_STR-WAITING_PERIOD sy-vline 
WA_ICS_WC_RWB_STR-RETRO_PERIOD sy-vline 
WA_ICS_WC_RWB_STR-MAX_PERIOD sy-vline 
WA_ICS_WC_RWB_STR-MAX_TOTAL sy-vline 
WA_ICS_WC_RWB_STR-FORMULA sy-vline 
WA_ICS_WC_RWB_STR-BEN_CONS sy-vline 
WA_ICS_WC_RWB_STR-CALCINSTR sy-vline 
WA_ICS_WC_RWB_STR-SCPOSN sy-vline 
WA_ICS_WC_RWB_STR-SCPOSLN sy-vline 
WA_ICS_WC_RWB_STR-TOTAL_SCHED sy-vline 
WA_ICS_WC_RWB_STR-SCH_SERVCATID sy-vline 
WA_ICS_WC_RWB_STR-SCH_SC_VARIANT sy-vline      INTO ld_text SEPARATED BY SPACE.

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