ABAP Select data from SAP table PIQBW_MBK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQBW_MBK
*  INTO TABLE @DATA(IT_PIQBW_MBK2).
*--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_PIQBW_MBK INDEX 1 INTO DATA(WA_PIQBW_MBK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQBW_MBK>-BPARTNER = 1.
<PIQBW_MBK>-STUDNR = 1.
<PIQBW_MBK>-MODULE_OBJECTID = 1.
<PIQBW_MBK>-SMSTATUS = 1.
<PIQBW_MBK>-EVPACK_OBJECTID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQBW_MBK-ACAD_YEARPERID, sy-vline,
  WA_PIQBW_MBK-EVENT_OBJECTID, sy-vline,
  WA_PIQBW_MBK-EVENT_OTYPE, sy-vline,
  WA_PIQBW_MBK-BOOKDATE, sy-vline,
  WA_PIQBW_MBK-BOOKREASON, sy-vline,
  WA_PIQBW_MBK-CANCELDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQBW_MBK 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_PIQBW_MBK 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_PIQBW_MBK INTO WA_PIQBW_MBK.


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

*Conversion exit PIQST, internal->external for field STUDNR
CALL FUNCTION 'CONVERSION_EXIT_PIQST_OUTPUT'
  EXPORTING
    input =                      WA_PIQBW_MBK-STUDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQBW_MBK-STUDNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field CPUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PIQBW_MBK-CPUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQBW_MBK-CPUNIT.
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_PIQBW_MBK_STR, 
BPARTNER TYPE STRING,
STUDNR TYPE STRING,
MODULE_OBJECTID TYPE STRING,
SMSTATUS TYPE STRING,
EVPACK_OBJECTID TYPE STRING,
ACAD_YEARPERID TYPE STRING,
EVENT_OBJECTID TYPE STRING,
EVENT_OTYPE TYPE STRING,
BOOKDATE TYPE STRING,
BOOKREASON TYPE STRING,
CANCELDATE TYPE STRING,
CANCELREASON TYPE STRING,
CPATTEMP TYPE STRING,
CPEARNED TYPE STRING,
CPGRADED TYPE STRING,
CPUNIT TYPE STRING,
GRADESYMBOL TYPE STRING,
GRADE TYPE STRING,
GRADESCALE TYPE STRING,
AWRATING TYPE STRING,
CHARGEFREE TYPE STRING,
TRANSFERFLAG TYPE STRING,
ANNULMENT TYPE STRING,
COBOK TYPE STRING,
AGRTYPE TYPE STRING,
AGRSTAT TYPE STRING,
AGRNOTRATED TYPE STRING,
AGRDATE TYPE STRING,
AGRCOMPLETED TYPE STRING,
AGRREMARK TYPE STRING,
AGRBEGDA TYPE STRING,
AGRENDDA TYPE STRING,
WAITL_BOOKING TYPE STRING,
PROGRAM_OBJECTID TYPE STRING,
PROGRAM_TYPE TYPE STRING,
RECORDMODE TYPE STRING,
MODREG_ID TYPE STRING,
ST_OBJID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQBW_MBK_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_PIQBW_MBK_STR-BPARTNER sy-vline 
WA_PIQBW_MBK_STR-STUDNR sy-vline 
WA_PIQBW_MBK_STR-MODULE_OBJECTID sy-vline 
WA_PIQBW_MBK_STR-SMSTATUS sy-vline 
WA_PIQBW_MBK_STR-EVPACK_OBJECTID sy-vline 
WA_PIQBW_MBK_STR-ACAD_YEARPERID sy-vline 
WA_PIQBW_MBK_STR-EVENT_OBJECTID sy-vline 
WA_PIQBW_MBK_STR-EVENT_OTYPE sy-vline 
WA_PIQBW_MBK_STR-BOOKDATE sy-vline 
WA_PIQBW_MBK_STR-BOOKREASON sy-vline 
WA_PIQBW_MBK_STR-CANCELDATE sy-vline 
WA_PIQBW_MBK_STR-CANCELREASON sy-vline 
WA_PIQBW_MBK_STR-CPATTEMP sy-vline 
WA_PIQBW_MBK_STR-CPEARNED sy-vline 
WA_PIQBW_MBK_STR-CPGRADED sy-vline 
WA_PIQBW_MBK_STR-CPUNIT sy-vline 
WA_PIQBW_MBK_STR-GRADESYMBOL sy-vline 
WA_PIQBW_MBK_STR-GRADE sy-vline 
WA_PIQBW_MBK_STR-GRADESCALE sy-vline 
WA_PIQBW_MBK_STR-AWRATING sy-vline 
WA_PIQBW_MBK_STR-CHARGEFREE sy-vline 
WA_PIQBW_MBK_STR-TRANSFERFLAG sy-vline 
WA_PIQBW_MBK_STR-ANNULMENT sy-vline 
WA_PIQBW_MBK_STR-COBOK sy-vline 
WA_PIQBW_MBK_STR-AGRTYPE sy-vline 
WA_PIQBW_MBK_STR-AGRSTAT sy-vline 
WA_PIQBW_MBK_STR-AGRNOTRATED sy-vline 
WA_PIQBW_MBK_STR-AGRDATE sy-vline 
WA_PIQBW_MBK_STR-AGRCOMPLETED sy-vline 
WA_PIQBW_MBK_STR-AGRREMARK sy-vline 
WA_PIQBW_MBK_STR-AGRBEGDA sy-vline 
WA_PIQBW_MBK_STR-AGRENDDA sy-vline 
WA_PIQBW_MBK_STR-WAITL_BOOKING sy-vline 
WA_PIQBW_MBK_STR-PROGRAM_OBJECTID sy-vline 
WA_PIQBW_MBK_STR-PROGRAM_TYPE sy-vline 
WA_PIQBW_MBK_STR-RECORDMODE sy-vline 
WA_PIQBW_MBK_STR-MODREG_ID sy-vline 
WA_PIQBW_MBK_STR-ST_OBJID sy-vline      INTO ld_text SEPARATED BY SPACE.

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