ABAP Select data from SAP table IQUALWCASSGMTBSC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IQUALWCASSGMTBSC
*  INTO TABLE @DATA(IT_IQUALWCASSGMTBSC2).
*--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_IQUALWCASSGMTBSC INDEX 1 INTO DATA(WA_IQUALWCASSGMTBSC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IQUALWCASSGMTBSC>-MANDT = 1.
<IQUALWCASSGMTBSC>-MFGHUMANRESOURCEQUALIFICATION = 1.
<IQUALWCASSGMTBSC>-WORKCENTERTYPECODE = 1.
<IQUALWCASSGMTBSC>-WORKCENTERINTERNALID = 1.
<IQUALWCASSGMTBSC>-CREATIONDATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IQUALWCASSGMTBSC-ENDDATE, sy-vline,
  WA_IQUALWCASSGMTBSC-MFGQUALIFNREQUIREDSKILLLEVEL, sy-vline,
  WA_IQUALWCASSGMTBSC-CREATEDBYNAME, sy-vline,
  WA_IQUALWCASSGMTBSC-CREATIONDATETIME, sy-vline,
  WA_IQUALWCASSGMTBSC-CHANGEDBYNAME, sy-vline,
  WA_IQUALWCASSGMTBSC-LASTCHANGEDATETIME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IQUALWCASSGMTBSC 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_IQUALWCASSGMTBSC 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_IQUALWCASSGMTBSC INTO WA_IQUALWCASSGMTBSC.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_IQUALWCASSGMTBSC_STR, 
MANDT TYPE STRING,
MFGHUMANRESOURCEQUALIFICATION TYPE STRING,
WORKCENTERTYPECODE TYPE STRING,
WORKCENTERINTERNALID TYPE STRING,
CREATIONDATE TYPE STRING,
ENDDATE TYPE STRING,
MFGQUALIFNREQUIREDSKILLLEVEL TYPE STRING,
CREATEDBYNAME TYPE STRING,
CREATIONDATETIME TYPE STRING,
CHANGEDBYNAME TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IQUALWCASSGMTBSC_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_IQUALWCASSGMTBSC_STR-MANDT sy-vline 
WA_IQUALWCASSGMTBSC_STR-MFGHUMANRESOURCEQUALIFICATION sy-vline 
WA_IQUALWCASSGMTBSC_STR-WORKCENTERTYPECODE sy-vline 
WA_IQUALWCASSGMTBSC_STR-WORKCENTERINTERNALID sy-vline 
WA_IQUALWCASSGMTBSC_STR-CREATIONDATE sy-vline 
WA_IQUALWCASSGMTBSC_STR-ENDDATE sy-vline 
WA_IQUALWCASSGMTBSC_STR-MFGQUALIFNREQUIREDSKILLLEVEL sy-vline 
WA_IQUALWCASSGMTBSC_STR-CREATEDBYNAME sy-vline 
WA_IQUALWCASSGMTBSC_STR-CREATIONDATETIME sy-vline 
WA_IQUALWCASSGMTBSC_STR-CHANGEDBYNAME sy-vline 
WA_IQUALWCASSGMTBSC_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.