ABAP Select data from SAP table PIQCDSMODBKNDATA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQCDSMODBKNDATA
*  INTO TABLE @DATA(IT_PIQCDSMODBKNDATA2).
*--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_PIQCDSMODBKNDATA INDEX 1 INTO DATA(WA_PIQCDSMODBKNDATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQCDSMODBKNDATA>-MANDT = 1.
<PIQCDSMODBKNDATA>-STUDYMODULE = 1.
<PIQCDSMODBKNDATA>-STUDYMODULESHORTNAME = 1.
<PIQCDSMODBKNDATA>-STUDYMODULENAME = 1.
<PIQCDSMODBKNDATA>-STUDYMODULEMINCREDITS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQCDSMODBKNDATA-STUDYMODULEMAXCREDITS, sy-vline,
  WA_PIQCDSMODBKNDATA-STUDYMODULEOPTIMUMCREDITS, sy-vline,
  WA_PIQCDSMODBKNDATA-STUDYMODULEMINCAPACITY, sy-vline,
  WA_PIQCDSMODBKNDATA-STUDYMODULEOPTIMUMCAPACITY, sy-vline,
  WA_PIQCDSMODBKNDATA-STUDYMODULEMAXCAPACITY, sy-vline,
  WA_PIQCDSMODBKNDATA-STUDYMODULESESSIONPATTERN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQCDSMODBKNDATA 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_PIQCDSMODBKNDATA 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_PIQCDSMODBKNDATA INTO WA_PIQCDSMODBKNDATA.


*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_PIQCDSMODBKNDATA_STR, 
MANDT TYPE STRING,
STUDYMODULE TYPE STRING,
STUDYMODULESHORTNAME TYPE STRING,
STUDYMODULENAME TYPE STRING,
STUDYMODULEMINCREDITS TYPE STRING,
STUDYMODULEMAXCREDITS TYPE STRING,
STUDYMODULEOPTIMUMCREDITS TYPE STRING,
STUDYMODULEMINCAPACITY TYPE STRING,
STUDYMODULEOPTIMUMCAPACITY TYPE STRING,
STUDYMODULEMAXCAPACITY TYPE STRING,
STUDYMODULESESSIONPATTERN TYPE STRING,
STUDYMODULEACADEMICLEVEL TYPE STRING,
STUDYMODULECATEGORY TYPE STRING,
STUDYMODULEREPETITIONTYPE TYPE STRING,
STUDYMODULEWAITINGLISTLEVEL TYPE STRING,
STUDYMODULEWAITLISTLEVELNAME TYPE STRING,
STUDYMODULEWAITLISTINPERCENT TYPE STRING,
STUDYMODULEWAITLISTISDISABLED TYPE STRING,
STUDYMODULEMLTPLSCTNISENABLED TYPE STRING,
MODULEBEGINDATE TYPE STRING,
MODULEENDDATE TYPE STRING,
STUDYMODULEREPETITIONTYPENAME TYPE STRING,
STUDYMODULECATEGORYNAME TYPE STRING,
STUDYMODULEACADEMICLEVELNAME TYPE STRING,
STUDENTSESSIONPATTERNTEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQCDSMODBKNDATA_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_PIQCDSMODBKNDATA_STR-MANDT sy-vline 
WA_PIQCDSMODBKNDATA_STR-STUDYMODULE sy-vline 
WA_PIQCDSMODBKNDATA_STR-STUDYMODULESHORTNAME sy-vline 
WA_PIQCDSMODBKNDATA_STR-STUDYMODULENAME sy-vline 
WA_PIQCDSMODBKNDATA_STR-STUDYMODULEMINCREDITS sy-vline 
WA_PIQCDSMODBKNDATA_STR-STUDYMODULEMAXCREDITS sy-vline 
WA_PIQCDSMODBKNDATA_STR-STUDYMODULEOPTIMUMCREDITS sy-vline 
WA_PIQCDSMODBKNDATA_STR-STUDYMODULEMINCAPACITY sy-vline 
WA_PIQCDSMODBKNDATA_STR-STUDYMODULEOPTIMUMCAPACITY sy-vline 
WA_PIQCDSMODBKNDATA_STR-STUDYMODULEMAXCAPACITY sy-vline 
WA_PIQCDSMODBKNDATA_STR-STUDYMODULESESSIONPATTERN sy-vline 
WA_PIQCDSMODBKNDATA_STR-STUDYMODULEACADEMICLEVEL sy-vline 
WA_PIQCDSMODBKNDATA_STR-STUDYMODULECATEGORY sy-vline 
WA_PIQCDSMODBKNDATA_STR-STUDYMODULEREPETITIONTYPE sy-vline 
WA_PIQCDSMODBKNDATA_STR-STUDYMODULEWAITINGLISTLEVEL sy-vline 
WA_PIQCDSMODBKNDATA_STR-STUDYMODULEWAITLISTLEVELNAME sy-vline 
WA_PIQCDSMODBKNDATA_STR-STUDYMODULEWAITLISTINPERCENT sy-vline 
WA_PIQCDSMODBKNDATA_STR-STUDYMODULEWAITLISTISDISABLED sy-vline 
WA_PIQCDSMODBKNDATA_STR-STUDYMODULEMLTPLSCTNISENABLED sy-vline 
WA_PIQCDSMODBKNDATA_STR-MODULEBEGINDATE sy-vline 
WA_PIQCDSMODBKNDATA_STR-MODULEENDDATE sy-vline 
WA_PIQCDSMODBKNDATA_STR-STUDYMODULEREPETITIONTYPENAME sy-vline 
WA_PIQCDSMODBKNDATA_STR-STUDYMODULECATEGORYNAME sy-vline 
WA_PIQCDSMODBKNDATA_STR-STUDYMODULEACADEMICLEVELNAME sy-vline 
WA_PIQCDSMODBKNDATA_STR-STUDENTSESSIONPATTERNTEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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